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Effect of boron species on carbon surface on oxidative dehydrogenation of propane
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作者 Tingcong Wang Mingyuan Zhu 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2023年第10期310-317,共8页
Carbon catalysts for propane oxidative dehydrogenation(PODH)can potentially replace metal oxide catalysts due to their environmental friendliness(greenness)and excellent catalytic performance.Biomass carbon materials ... Carbon catalysts for propane oxidative dehydrogenation(PODH)can potentially replace metal oxide catalysts due to their environmental friendliness(greenness)and excellent catalytic performance.Biomass carbon materials have the advantages of being abundant in variety,inexpensive,and easily available,but their catalytic selectivity is relatively poor in PODH.Therefore,we report here on a boron-doped sisal fiber carbon catalyst,which showed excellent selectivity of propylene in PODH,excluding the effect of surface-covered B2O3 on the catalytic performance by hot water washing.The carbon material exhibited the best catalytic performance with a load of 2%(mass)and a calcination temperature of 1100℃.At a reaction temperature of 400℃,the conversion rate of propane was 2.0%,and the selectivity toward propylene reached 88.6%.The new chemical bonds formed by boron on the surface of the carbon materials had an important effect on the catalytic performance,as determined by XPS characterization.The BAO groups affected the catalytic activity by inhibiting the generation of electrophilic oxygen species,while the BAC content improved the selectivity toward propylene by changing the electron cloud density. 展开更多
关键词 BORON-DOPED oxidative dehydrogenation propane SELECTIVITY
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A mini review on oxidative dehydrogenation of propane over boron nitride catalysts
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作者 Zhu Fu De-Zheng Li +5 位作者 Li-Dai Zhou Yu-Ming Li Jia-Wen Guo Yu-Qiao Li Hui-Min Liu Qi-Jian Zhang 《Petroleum Science》 SCIE EI CAS CSCD 2023年第4期2488-2498,共11页
Oxidative dehydrogenation of propane is an attractive route for the synthesis of propylene due to its favorable thermodynamic and kinetic characteristics, however, it is challenging to realize high selectivity towards... Oxidative dehydrogenation of propane is an attractive route for the synthesis of propylene due to its favorable thermodynamic and kinetic characteristics, however, it is challenging to realize high selectivity towards propylene. Recently, it has been discovered that boron nitride (BN) is a promising catalyst that affords superior selectivity towards propylene in oxidative dehydrogenation of propane. Summarizing the progress and unravelling the reaction mechanism of BN in oxidative dehydrogenation of propane are of great significance for the rational design of efficient catalysts in the future. Herein, in this review, the underlying reaction mechanisms of oxidative dehydrogenation of propane over BN are extracted;the developed BN catalysts are classified into pristine BN, functionalized BN, supported BN and others, and the applications of each category of BN catalysts in oxidative dehydrogenation of propane are summarized;the challenges and opportunities on oxidative dehydrogenation of propane over BN are pointed out, aiming to inspire more studies and advance this research field. 展开更多
关键词 oxidative dehydrogenation of propane Boron nitride PROPYLENE Reaction mechanism
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Finned Zn-MFI zeolite encapsulated noble metal nanoparticle catalysts for the oxidative dehydrogenation of propane with carbon dioxide
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作者 En-Hui Yuan Yiming Niu +7 位作者 Xing Huang Meng Li Jun Bao Yong-Hong Song Bingsen Zhang Zhao-Tie Liu Marc-Georg Willinger Zhong-Wen Liu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2023年第5期479-491,I0011,共14页
Oxidative dehydrogenation of propane with carbon dioxide(CO_(2)-ODP)characterizes the tandem dehydrogenation of propane to propylene with the reduction of the greenhouse gas of CO_(2)to valuable CO.However,the existin... Oxidative dehydrogenation of propane with carbon dioxide(CO_(2)-ODP)characterizes the tandem dehydrogenation of propane to propylene with the reduction of the greenhouse gas of CO_(2)to valuable CO.However,the existing catalyst is limited due to the poor activity and stability,which hinders its industrialization.Herein,we design the finned Zn-MFI zeolite encapsulated noble metal nanoparticles(NPs)as bifunctional catalysts(NPs@Zn-MFI)for CO_(2)-ODP.Characterization results reveal that the Zn2+species are coordinated with the MFI zeolite matrix as isolated cations and the NPs of Pt,Rh,or Rh Pt are highly dispersed in the zeolite crystals.The isolated Zn2+cations are very effective for activating the propane and the small NPs are favorable for activating the CO_(2),which synergistically promote the selective transformation of propane and CO_(2)to propylene and CO.As a result,the optimal 0.25%Rh0.50%Pt@Zn-MFI catalyst shows the best propylene yield,satisfactory CO_(2)conversion,and long-term stability.Moreover,considering the tunable synergetic effects between the isolated cations and NPs,the developed approach offers a general guideline to design more efficient CO_(2)-ODP catalysts,which is validated by the improved performance of the bifunctional catalysts via simply substituting Sn4+cations for Zn2+cations in the MFI zeolite matrix. 展开更多
关键词 oxidative dehydrogenation propane Carbon dioxide Finned Zn-MFI zeolite Encapsulated noble metal nanoparticles
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Tuning catalytic selectivity of propane oxidative dehydrogenation via surface polymeric phosphate modification on nickel oxide nanoparticles 被引量:2
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作者 Kaimin Du Mengjia Hao +5 位作者 Zhinian Li Wei Hong Juanjuan Liu Liping Xiao Shihui Zou Jie Fan 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2019年第7期1057-1062,共6页
Thermal stability has long been recognized as a major limitation for the application of ligand modification in high-temperature reactions. Herein, we demonstrate polymeric phosphate as an efficient and stable ligand t... Thermal stability has long been recognized as a major limitation for the application of ligand modification in high-temperature reactions. Herein, we demonstrate polymeric phosphate as an efficient and stable ligand to tune the selectivity of propane oxidative dehydrogenation. Beneficial from the weakened affinity of propene, NiO modified with polymeric phosphate shows a selectivity 2–3 times higher than NiO towards the production of propene. The success of this regulation verifies the feasibility of ligand modification in high-temperature gas-phase reactions and shines a light on its applications in other important industrial reactions. 展开更多
关键词 Nickel oxide nanoparticle Surface polymeric phosphate propane oxidative dehydrogenation Tuning selectivity Adsorption
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Synthesis of a new ordered mesoporous NiMoO_4 complex oxide and its efficient catalytic performance for oxidative dehydrogenation of propane 被引量:7
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作者 Xiaoqiang Fan Jianmei Li +4 位作者 Zhen Zhao Yuechang Wei Jian Liu Aijun Duan Guiyuan Jiang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2014年第2期171-178,共8页
Highly ordered mesoporous NiMoO4 material was successfully synthesized using mesoporous silica KIT-6 as hard template via vacuum nanocasting method. The structure was characterized by means of XRD, TEM, N2 adsorption-... Highly ordered mesoporous NiMoO4 material was successfully synthesized using mesoporous silica KIT-6 as hard template via vacuum nanocasting method. The structure was characterized by means of XRD, TEM, N2 adsorption-desorption, Raman and FT-IR. The mesoporous NiMoO4 with the coexistence of a-NiMoO4 and fl-NiMoO4 showed well-ordered mesoporous structure, a bimodal pore size distribution and crystalline framework. The catalytic performance of NiMoOa was investigated for oxidative dehydrogenation of propane. It is demonstrated that the mesoporous NiMoO4 catalyst with more surface active oxygen species showed better catalytic performance in oxidative dehydrogena- tion of propane in comparison with bulk NiMoO4. 展开更多
关键词 ----w 7ordered mesoporous structure NiMoO4 complex oxide vacuum nanocasting propane oxidative dehydrogenation
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Ordered macroporous boron phosphate crystals as metal-free catalysts for the oxidative dehydrogenation of propane 被引量:8
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作者 Wen-Duo Lu Xin-Qian Gao +4 位作者 Quan-Gao Wang Wen-Cui Li Zhen-Chao Zhao Dong-Qi Wang An-Hui Lu 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2020年第12期1837-1845,共9页
Ordered macroporous materials with rapid mass transport and enhanced active site accessibility are essential for achieving improved catalytic activity.In this study,boron phosphate crystals with a three-dimensionally ... Ordered macroporous materials with rapid mass transport and enhanced active site accessibility are essential for achieving improved catalytic activity.In this study,boron phosphate crystals with a three-dimensionally interconnected ordered macroporous structure and a robust framework were fabricated and used as stable and selective catalysts in the oxidative dehydrogenation(ODH)of propane.Due to the improved mass diffusion and higher number of exposed active sites in the ordered macroporous structure,the catalyst exhibited a remarkable olefin productivity of^16 golefin gcat^-1 h^-1,which is up to 2–100 times higher than that of ODH catalysts reported to date.The selectivity for olefins was 91.5%(propene:82.5%,ethene:9.0%)at 515℃,with a propane conversion of 14.3%.At the same time,the selectivity for the unwanted deep-oxidized CO2 product remained less than 1.0%.The tri-coordinated surface boron species were identified as the active catalytic sites for the ODH of propane.This study provides a route for preparing a new type of metal-free catalyst with stable structure against oxidation and remarkable catalytic activity,which may represent a potential candidate to promote the industrialization of the ODH process. 展开更多
关键词 Ordered macroporous material Metal-free catalyst Boron phosphate oxidative dehydrogenation propane
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Preparation and catalytic properties of mesoporous nV ‐MCM‐41 for propane oxidative dehydrogenation in the presence of CO_2 被引量:5
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作者 Zai‐Fang Han Xu‐Liang Xue +2 位作者 Jian‐Min Wu Wan‐Zhong Lang Ya‐Jun Guo 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2018年第6期1099-1109,共11页
The nV‐MCM‐41 catalysts were prepared by one‐step hydrothermal synthesis and applied to the oxidative dehydrogenation of propane(ODHP) in the presence of CO2. Several state‐of‐the‐art char‐acterization method... The nV‐MCM‐41 catalysts were prepared by one‐step hydrothermal synthesis and applied to the oxidative dehydrogenation of propane(ODHP) in the presence of CO2. Several state‐of‐the‐art char‐acterization methods were performed to explore the correlation between catalytic performance and the physicochemical characterizations of the catalysts. Because moderate amounts of V species were introduced into the framework of MCM‐41, the catalyst maintained a large specific surface area, a highly ordered mesoporous structure, and highly dispersed V active sites(monomeric and dimeric V oxide species), while the high‐vanadium‐doping catalysts caused an enhancement in the number of acidic sites and V2O5 crystallites. The ODHP reaction showed that the 6.8 V‐MCM‐41(V content 6.8 wt%) catalyst exhibits high activity and stability, and the C3H8/CO2 molar ratio(1:4) was suitable. The promoting effect of CO2 on the oxidative dehydrogenation of ODHP was demonstrated as the reaction coupling mechanism and "lattice oxygen" mechanism. 展开更多
关键词 propane dehydrogenation VANADIUM oxide MCM‐41 MESOPOROUS support Heterogeneous catalysis
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Kinetics of the Oxidative Dehydrogenation of Propane over a VMgO Catalyst 被引量:3
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作者 L.Late E.A.Blekkan 《Journal of Natural Gas Chemistry》 CAS CSCD 2002年第1期33-42,共10页
The reaction kinetics of the oxidative dehydrogenation of propane was studied at 475-550°C over a VMgO catalyst. Vanadium-magnesium-oxides are among the most selective and active catalysts for the dehydrogenation... The reaction kinetics of the oxidative dehydrogenation of propane was studied at 475-550°C over a VMgO catalyst. Vanadium-magnesium-oxides are among the most selective and active catalysts for the dehydrogenation of propane to propylene. Selectivity to propylene up to about 60% was obtained at 10% conversion, but the selectivity decreased with increasing conversion. No oxygenates were detected, the only by-products were CO and CO2. The reaction rate of propane was found to be first order in propane and close to zero order in oxygen, which is in agreement with a Mars van Krevelen mechanism with the activation of the hydrocarbon as the rate determining step. The activation energy of the conversion of propane was found to be 122±6 kJ/mol. 展开更多
关键词 propane oxidative dehydrogenation VMgO KINETICS
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Modeling-based optimization of a fixed-bed industrial reactor for oxidative dehydrogenation of propane 被引量:5
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作者 Ali Darvishi Razieh Davand +1 位作者 Farhad Khorasheh Moslem Fattahi 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2016年第5期612-622,共11页
An industrial scale propylene production via oxidative dehydrogenation of propane (ODHP) in multi-tubular re- actors was modeled. Multi-tubular fixed-bed reactor used for ODHP process, employing 10000 of small diame... An industrial scale propylene production via oxidative dehydrogenation of propane (ODHP) in multi-tubular re- actors was modeled. Multi-tubular fixed-bed reactor used for ODHP process, employing 10000 of small diameter tubes immersed in a shell through a proper coolant flows. Herein, a theory-based pseudo-homogeneous model to describe the operation of a fixed bed reactor for the ODHP to correspondence olefln over V2O5/γ-Al203 catalyst was presented. Steady state one dimensional model has been developed to identify the operation parameters and to describe the propane and oxygen conversions, gas process and coolant temperatures, as well as other pa- rameters affecting the reactor performance such as pressure. Furthermore, the applied model showed that a double-bed multitubular reactor with intermediate air injection scheme was superior to a single-bed design due to the increasing of propylene selectivity while operating under lower oxygen partial pressures resulting in propane conversion of about 37.3%. The optimized length of the reactor needed to reach 100% conversion of the oxygen was theoretically determined. For the single-bed reactor the optimized length of 11.96 m including 0.5 m of inert section at the entrance region and for the double-bed reactor design the optimized lengths of 5.72 m for the first and 7.32 m for the second reactor were calculated. Ultimately, the use of a distributed oxygen feed with limited number of injection points indicated a significant improvement on the reactor performance in terms of propane conversion and propylene selectivity. Besides, this concept could overcome the reactor run- away temperature problem and enabled operations at the wider range of conditions to obtain enhanced propyl- ene production in an industrial scale reactor. 展开更多
关键词 Fixed-bed reactor Mathematical modeling oxidative dehydrogenation of propane PROPYLENE V2O5/γ-Al203 catalyst OPTIMIZATION
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Intrinsic kinetics of oxidative dehydrogenation of propane in the presence of CO_2 over Cr/MSU-1 catalyst 被引量:2
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作者 Haitao Liu Zhao Zhang Huiquan Li Qingze Huang 《Journal of Natural Gas Chemistry》 EI CAS CSCD 2011年第3期311-317,共7页
The intrinsic kinetics of oxidative dehydrogenation of propane with CO2 has been investigated over Cr/MSU-1 catalyst in a fixed bed reactor. Without limitations of both internal and external diffusion, intrinsic kinet... The intrinsic kinetics of oxidative dehydrogenation of propane with CO2 has been investigated over Cr/MSU-1 catalyst in a fixed bed reactor. Without limitations of both internal and external diffusion, intrinsic kinetic data were obtained under the following conditions: 490-530 °C, space velocity of 3600?6000 mL·h-1·g-1 and 3/1 molar ratio for CO2/C3H8 under normal pressure. Based on Langmuir-Hinshelwood mechanism, the kinetic models were established, and they were validated by statistical analysis. The parameters were estimated using Simplex Method combined with Universal Global Optimization Algorithm. The model, taking the surface reaction process as the rate-determining step, is the best one in agreement with the experimental data. 展开更多
关键词 intrinsic kinetics propane carbon dioxide oxidative dehydrogenation Cr/MSU-1 catalyst
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Effect of gallium, aluminium, and chromium on silica supported V-Mg-O catalysts during oxidative dehydrogenation of propane: Kinetic study 被引量:1
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作者 B.Ravi Kumar Rajeev Kumar 《Journal of Natural Gas Chemistry》 EI CAS CSCD 2008年第3期256-263,共8页
The oxidative dehydrogenation (ODH) of propane was conducted on gallium, aluminum, and chromium doped Si30VMgO catalysts. On doping, the concentrations of the phases responsible for the activity and selectivity incr... The oxidative dehydrogenation (ODH) of propane was conducted on gallium, aluminum, and chromium doped Si30VMgO catalysts. On doping, the concentrations of the phases responsible for the activity and selectivity increased in their concentrations. The reaction studies were conducted in a tubular steel reactor at temperatures of 753, 783, 813, and 843 K and atmospheric pressure. The total flow rates of the feed were chosen as 30, 40, 50, and 60 ml/min. The propane to oxygen ratios were chosen at 1 : 1, 2 : 1, and 3 : 1, respectively. The effect of various dopants on the activity and selectivity of the catalysts was studied. Deactivation studies were conducted over all the catalysts. The kinetic data were analyzed in terms of power law models and Langmuir-Hinshelwood (LH) models. The kinetic data results were analyzed by comparing the effect of dopants. Statistical model discrimination was done for the proposed models. AIC and BIC criteria were used for discrimination of the models. 展开更多
关键词 oxidative dehydrogenation propane GALLIUM ALUMINUM CHROMIUM KINETIC
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Balancing the Activity and Selectivity of Propane Oxidative Dehydrogenation on NiOOH(001)and(010) 被引量:1
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作者 Lisheng Li Hua Wang +2 位作者 Jinyu Han Xinli Zhu Qingfeng Ge 《Transactions of Tianjin University》 EI CAS 2020年第5期341-351,共11页
Propane oxidative dehydrogenation(ODH)is an energy-efficient approach to produce propylene.However,ODH suff ers from low propylene selectivity due to a relatively higher activation barrier for propylene formation comp... Propane oxidative dehydrogenation(ODH)is an energy-efficient approach to produce propylene.However,ODH suff ers from low propylene selectivity due to a relatively higher activation barrier for propylene formation compared with that for further oxidation.In this work,calculations based on density functional theory were performed to map out the reaction pathways of propane ODH on the surfaces(001)and(010)of nickel oxide hydroxide(NiOOH).Results show that propane is physisorbed on both surfaces and produces propylene through a two-step radical dehydrogenation process.The relatively low activation barriers of propane dehydrogenation on the NiOOH surfaces make the NiOOH-based catalysts promising for propane ODH.By contrast,the weak interaction between the allylic radical and the surface leads to a high activation barrier for further propylene oxidation.These results suggest that the catalysts based on NiOOH can be active and selective for the ODH of propane toward propylene. 展开更多
关键词 Density functional theory oxidative dehydrogenation propane Nickel oxide hydroxide Two-step radical mechanism SELECTIVITY
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Deep oxidation in propane oxidative dehydrogenation to propene over V_2O_5/γ-Al_2O_3 studied by in-situ DRIFTS
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作者 Yunbing He Hongbing Ji Jianhua Xu Lefu Wang 《Journal of Natural Gas Chemistry》 EI CAS CSCD 2009年第3期359-364,共6页
In-situ DRIFTS was used to study the deep oxidation of propane, a side reaction during propane oxidative dehydrogenation to propene. Strong adsorption of propene was supposed to be the main reason for the deep oxidati... In-situ DRIFTS was used to study the deep oxidation of propane, a side reaction during propane oxidative dehydrogenation to propene. Strong adsorption of propene was supposed to be the main reason for the deep oxidation. It was found that gaseous oxygen in the feed and the reaction temperature had great influence on the reaction. To obtain a relative high selectivity to propene, the reaction temperature should be maintained at 150-250℃ with a proper content of gaseous oxygen in the feed for a certain catalyst and some modifiers which could weaken the adsorption of propene on the catalyst surface would be favorable. 展开更多
关键词 propane PROPENE oxidative dehydrogenation in-situ DRIFTS deep oxidation
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Dynamic Structure of Mo-O Species in Ag-Mo-P-O Catalyst for Oxidative Dehydrogenation of Propane
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作者 XinZHANG HuiLinWAN 《Chinese Chemical Letters》 SCIE CAS CSCD 2002年第9期907-910,共4页
The dynamic structure of Mo-O species in Ag-Mo-P-O catalyst was studied by in situ confocal microprobe laser Raman spectroscopy (LRS) and catalytic test. The results indicate Mo-O species of MoO3 transformed to Mo-O ... The dynamic structure of Mo-O species in Ag-Mo-P-O catalyst was studied by in situ confocal microprobe laser Raman spectroscopy (LRS) and catalytic test. The results indicate Mo-O species of MoO3 transformed to Mo-O species of AgMoO2PO4 in C3H8/O2/N2 (3/1/4) flow at 773 K. This behavior is closely relative to oxidative dehydrogenation of propane and intrinsic properties of Mo-O species. The Mo-O species of AgMoO2PO4 may be active species for oxidative dehydrogenation of propane. 展开更多
关键词 propane oxidative dehydrogenation Mo-O species dynamic structure.
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Oxidative dehydrogenation of propane over Ni-Mo-Mg-O catalysts 被引量:5
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作者 Lin Wang Wei Chu +3 位作者 Chengfa Jiang Yuefeng Liu Jie Wen Zaiku Xie 《Journal of Natural Gas Chemistry》 EI CAS CSCD 2012年第1期43-48,共6页
In this work, a series of Ni-Mo-Mg-O catalysts with mesoporous structure prepared by sol-gel method were investigated for the oxidative dehydrogenation of propane (ODHP). The techniques of temperature-programmed red... In this work, a series of Ni-Mo-Mg-O catalysts with mesoporous structure prepared by sol-gel method were investigated for the oxidative dehydrogenation of propane (ODHP). The techniques of temperature-programmed reduction with H2 (H2-TPR), N2 adsorption-desolption, Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and X-ray photoelectron spectra (XPS) were employed for catalyst characterization. It is found that the activity of the catalysts for ODHP increases first and then decreases with the increase of Mo content. The catalyst with a Mo/Ni atomic ratio of 1/1 exhibits the best catalytic activity, which gives the propene selectivity of 81.4% at a propane conversion of 11.3% under 600 ~C and maintains the good catalytic performance for 22 h on stream. This is related not only to its high reducibility and dispersion as revealed by TPR and XRD, but also to the formation of more selective oxygen species on the MoOz-NiO interface as identified by XPS. 展开更多
关键词 nickel oxide molybdenum oxide mole ratio oxidative dehydrogenation of propane PROPENE
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Oxidative dehydrogenation of propane under steady-state and transient regimes over alumina-supported catalysts prepared from mixed V_2W_4O_(19)^(4-) hexametalate precursors
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作者 Sébastien Paul Elise Berrier +1 位作者 Marcia Cristina Kaezer Frana Jean-Guillaume Eon 《Journal of Natural Gas Chemistry》 CAS CSCD 2010年第2期123-133,共11页
An integrated approach combining the development of an innovative catalyst and the research of a set of adequate operating conditions for the propane oxidative dehydrogenation (ODH) is described.The experimental set... An integrated approach combining the development of an innovative catalyst and the research of a set of adequate operating conditions for the propane oxidative dehydrogenation (ODH) is described.The experimental set-up,specially designed for steady-state and transient studies is presented.The preparation method,the characterization and the performances in steady-state and transient regimes of catalysts based on V2W4O194-Lindqvist isopolyanion used as a precursor and supported on alumina are reported.The influence of the preparation method of the catalyst and the role of water in the feed gas are more particularly discussed. 展开更多
关键词 propane oxidative dehydrogenation (ODH) transient regime pulsed reactor Lindqvist isopolyanion in-situ Raman
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OXIDATIVE DEHYDROGENATION OF PROPANE OVER MCl_n/V-Mg-O CATALYSTS
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作者 Wei De ZHANG Zhi Min FANG Jia Ning JIANG Hui Lin WAN Qi Rui CAI Department of Chemistry,Xiamen University,Xiamen,361005 《Chinese Chemical Letters》 SCIE CAS CSCD 1993年第12期1061-1064,共4页
Oxidative dehydrogenation of propane over V-Mg-O and MCl_n(M=Cu^+,Li^+, Ag^+,Cd^(2+))promoted V-Mg-O catalysts was studied.XRD result showed that the V-Mg-O catalysts were composed of MgO and Mg_3(VO_4)_2.The yield of... Oxidative dehydrogenation of propane over V-Mg-O and MCl_n(M=Cu^+,Li^+, Ag^+,Cd^(2+))promoted V-Mg-O catalysts was studied.XRD result showed that the V-Mg-O catalysts were composed of MgO and Mg_3(VO_4)_2.The yield of propene was much higher over CuCl and LiCl promoted VMgO catalysts than that over VMgO catalysts at the same reaction temperature.The highest yield of propene reached 23.1% at 500℃ and 6000h^(-1) space velocity. 展开更多
关键词 oxidative dehydrogenation OF propane OVER MCl_n/V-Mg-O CATALYSTS XRD OVER than
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Flour-derived borocarbonitride enriched with boron-oxygen species for the oxidative dehydrogenation of propane to olefins
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作者 Dong Li Jingying Bi +6 位作者 Zean Xie Lian Kong Bing Liu Xiaoqiang Fan Xia Xiao Yuxin Miao Zhen Zhao 《Science China Chemistry》 SCIE EI CAS CSCD 2023年第8期2389-2399,共11页
The preparation of porous materials by the simple and low-cost methods is one of the hot topics in materials science.Here,the porous carbon-incorporated BN(P-CBN)was synthesized from the low-cost flour by a fermentati... The preparation of porous materials by the simple and low-cost methods is one of the hot topics in materials science.Here,the porous carbon-incorporated BN(P-CBN)was synthesized from the low-cost flour by a fermentation combined with freezedrying technology and ammonolysis.P-CBN-x samples not only maintain the pores of the fermented dough,but also produce abundant oxygen-containing boron species(B-OH,O-O and B-O).Due to the unique structural advantages,P-CBN-x catalysts exhibit remarkably better catalytic performance than bulk BN for the oxidative dehydrogenation of propane(ODHP)to produce olefins.Attractively,P-CBN-23 obtains high C_(3)H_(8 )conversion of 62.1%and olefin yield of 42.7%.In-situ DRIFTS experiments and DFT calculations demonstrate the B-OO-B species in P-CBN-x framework is the most active species for the C3H8activation and the B-O…O-B species can be readily regenerated by O_(2),thus promoting the conversion of propane to olefin. 展开更多
关键词 flour fermentation carbon-incorporated boron nitrides oxidative dehydrogenation propane
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Oxidative Dehydrogenation of Propane over Vanadia Catalysts Supported on TiO_2-ZrO_2 Composite Oxide 被引量:1
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作者 朱红娟 李洪波 《催化学报》 SCIE CAS CSCD 北大核心 2002年第5期391-392,共2页
关键词 丙烷 氧化脱氢 二氧化钛 二氧化锆 复合氧化物 载体 氧化钒催化剂
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P-modified cobalt oxide: A novel and effective catalyst for oxidative dehydrogenation of propane
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作者 Xiao-Zhang Lin Guang-Chao Li +2 位作者 Chuan-Jing Huang Wei-Zheng Weng Hui-Lin Wan 《Chinese Chemical Letters》 SCIE CAS CSCD 2013年第9期789-792,共4页
A series ofnanosized cobalt oxide catalysts modified with phosphorus have been synthesized by the solgel method and investigated in the oxidative dehydrogenation of propane to propene. With the addition of phosphorus,... A series ofnanosized cobalt oxide catalysts modified with phosphorus have been synthesized by the solgel method and investigated in the oxidative dehydrogenation of propane to propene. With the addition of phosphorus, the crystallite size of the catalyst was largely decreased, while the P species in the catalyst were highly dispersed. Compared to pure cobalt oxide, the P-modified samples showed higher propane conversion and enhanced propene selectivity. Over the PCoO catalyst with a P/Co atomic ratio of 0.05, the maximal propene yields of 15.7% with a propane conversion of 28.3% were obtained at 520 ℃. 展开更多
关键词 propane Propene oxidative dehydrogenation Nanosized PCoO catalyst
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