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Support technologies for deep and complex roadways in underground coal mines:a review 被引量:126
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作者 Hongpu Kang 《International Journal of Coal Science & Technology》 EI CAS 2014年第3期261-277,共17页
Based on geological and mining characteristics,coal mine roadways under complex conditions were divided into five types,for each type the deformation and damage characteristics of rocks surrounding roadways were analy... Based on geological and mining characteristics,coal mine roadways under complex conditions were divided into five types,for each type the deformation and damage characteristics of rocks surrounding roadways were analyzed.The recent developments of roadway support technologies were introduced abroad,based on the experiences of supports for deep and complex roadways from Germany,the United States and Australia.The history and achievements of roadway support technologies in China were detailed,including rock bolting,steel supports,grouting reinforcement and combined supports.Four typical support and reinforcement case studies were analyzed,including a high stressed roadway 1,000 m below the surface,a roadway surrounded by severely weak and broken rocks,a chamber surrounded by weak and broken rocks,and a roadway with very soft and swelling rocks.Based on studies and practices in many years,rock bolting has become the mainstream roadway support form in China coal mines,and steel supports,grouting reinforcement and combined supports have also been applied at proper occasions,which have provided reliable technical measures for the safe and high effective construction and mining of underground coal mines. 展开更多
关键词 Coal mines Deep and complex roadways Rock bolts Steel supports GROUTING Combined supports
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Research on characters of surrounding rock in complex geology conditions and supporting time 被引量:9
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作者 Yu Weijian Gao Qian +1 位作者 Zhai Shuhua Zhang Meihua 《Engineering Sciences》 EI 2008年第2期91-96,共6页
The methods combined by test, field monitoring and theoretical analysis were adopted to do the systemic research on the rock mass from micro-structure to macro-deformation, and rheological model of Jinchuan rock mass ... The methods combined by test, field monitoring and theoretical analysis were adopted to do the systemic research on the rock mass from micro-structure to macro-deformation, and rheological model of Jinchuan rock mass was established to discuss the reasonable supporting time. Resuhs show that supporting after suitable stress and displacement release can benefit for the long-term stability of surrounding rock. 展开更多
关键词 complex geological conditions surrounding rock characteristic test supporting time theological characteristic
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Silica-gel Supported V Complexes: Preparation, Characterization and Catalytic Oxidative Desulfunzation 被引量:2
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作者 黎俊波 刘习文 +2 位作者 曹灿灿 郭嘉 潘志权 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2013年第8期860-866,共7页
In this manuscript, a series of catalyst SG n-[VVO2-PAMAM-MSA] (SG silica gel, PAMAM polyamidoamine, MSA 5-methyl salicylaldehyde, n=0, 1, 2, 3) was prepared and their structures were fully characterized by Fourier tr... In this manuscript, a series of catalyst SG n-[VVO2-PAMAM-MSA] (SG silica gel, PAMAM polyamidoamine, MSA 5-methyl salicylaldehyde, n=0, 1, 2, 3) was prepared and their structures were fully characterized by Fourier transform-infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS) and inductive coupled plasma emission spectrometer (ICP) etc. XPS revealed that the metal V and SG n-PAMAM-MSA combined more closely after the formation of Schiff base derivatives. Their catalytic activities for oxidation of dibenzothiophene were evaluated using tert-butyl hydroperoxide as oxidant. The results showed that the catalyst SG 2.0-[VVO2-PAMAM-MSA] presented good catalytic activity and recycling time. Meanwhile, the optimal condition for the catalytic oxidation of SG 2.0-[VVO2-PAMAM-MSA] was also investigated, which showed that when the oxidation temperature was 90 °C, time was 60 min, the O/S was 3:1, and the mass content of catalyst was 1%, the rate of desulfurization could reach 85.2%. Moreover, the catalyst can be recycled several times without significant decline in catalytic activity. 展开更多
关键词 oxidative desulfurization silica gel supported complex V complex tert-butyl hydroperoxide
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Optimized Complex Power Quality Classifier Using One vs. Rest Support Vector Machines 被引量:1
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作者 David De Yong Sudipto Bhowmik Fernando Magnago 《Energy and Power Engineering》 2017年第10期568-587,共20页
Nowadays, power quality issues are becoming a significant research topic because of the increasing inclusion of very sensitive devices and considerable renewable energy sources. In general, most of the previous power ... Nowadays, power quality issues are becoming a significant research topic because of the increasing inclusion of very sensitive devices and considerable renewable energy sources. In general, most of the previous power quality classification techniques focused on single power quality events and did not include an optimal feature selection process. This paper presents a classification system that employs Wavelet Transform and the RMS profile to extract the main features of the measured waveforms containing either single or complex disturbances. A data mining process is designed to select the optimal set of features that better describes each disturbance present in the waveform. Support Vector Machine binary classifiers organized in a “One Vs Rest” architecture are individually optimized to classify single and complex disturbances. The parameters that rule the performance of each binary classifier are also individually adjusted using a grid search algorithm that helps them achieve optimal performance. This specialized process significantly improves the total classification accuracy. Several single and complex disturbances were simulated in order to train and test the algorithm. The results show that the classifier is capable of identifying >99% of single disturbances and >97% of complex disturbances. 展开更多
关键词 complex Power Quality Optimal Feature Selection ONE vs. REST support Vector Machine Learning Algorithms WAVELET Transform Pattern Recognition
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POLYMER SUPPORT EFFECTS OF METAL COMPLEXES FOR CATALYSIS
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作者 李弘 何炳林 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 1998年第4期362-369,共8页
In the course of investigating the catalytic behavior of metal complexes for ring opening metathesis polymerization of cycloolefins, metathesis, hydroformylation and selective hydrogenation of olefins experimental res... In the course of investigating the catalytic behavior of metal complexes for ring opening metathesis polymerization of cycloolefins, metathesis, hydroformylation and selective hydrogenation of olefins experimental results time and again indicate the presence of effects of macromolecular supports - the utilization of macromolecular supports increases obviously the activity, selectivity, and stability of the catalysts and so as to increase the conversion of substrates, yields of reactions, properties of formed polymers and so on. Discussed these effects on the basis of the authors' experiments. (Author abstract) 18 Refs. 展开更多
关键词 polymer supported catalysts metal complexes support effects
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SYNTHESIS, CHARACTERIZATION AND CATALYTIC ACTIVITY OF N,N'-BIS(3-ALLYL SALICYLIDENE)ETHYLENEDIAMINE COBALT(Ⅱ) SCHIFF BASE COMPLEX ANCHORED ON A NEW POLYMER SUPPORT
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作者 K.C. Gupta H.K. Abdulkadir S. Chand 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2004年第1期31-42,共12页
A new chelating polymer support has been prepared by suspension copolymerization of synthesized N,N'-bis(3- allyl salicylidene)ethylenediamine monomer Schiff base (N,N'-BSEDA) with styrene (St) and divinylbenz... A new chelating polymer support has been prepared by suspension copolymerization of synthesized N,N'-bis(3- allyl salicylidene)ethylenediamine monomer Schiff base (N,N'-BSEDA) with styrene (St) and divinylbenzene (DVB) using azobisisobutyronitrile (AIBN) as initiator in the presence of poly(vinyl alcohol). The content and complexation ability of monomer Schiff base (N,N'-BSEDA) for cobalt ions in prepared crosslinked polymer beads have shown dependence on the amount of DVB used in reaction mixture. The amount of monomer Schiff base (N,N '-BSEDA) in crosslinked beads showed a substantial decreasing trend at high concentration of DVB in the reaction mixture (> 1.5 mol dm-3), hence the efficiency of complexation (EC%) and cobalt ion loading (EL%) of polymer beads showed a decreasing trend. The structure of monomer Schiff base (N,N'-BSEDA) and its cobalt complex on polymer support was elucidated by IR, UV and magnetic measurements. The catalytic activity of polymer bound cobalt Schiff base complex was evaluated by analyzing kinetic data of decomposition of hydrogen peroxide in the presence of either supported cobalt complex or free cobalt complex. The activation energy for the decomposition of hydrogen peroxide by polymer supported cobalt complex was found to be low (33.37 kJ mol-1) in comparison with unsupported cobalt complex (56.35 kJ mol-1). On the basis of experimental observations, reaction steps are proposed and a suitable rate expression derived. 展开更多
关键词 Cobalt complex Polymer support Hydrogen peroxide CATALYSIS
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Synthesis, Characterization, and Properties of Supported Tungstozincate Bridged by Co(Ⅱ) Complex Fragment
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作者 LIU Kun LI Jia +1 位作者 LIU Hong-bo CHEN Ya-guang 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2008年第6期668-671,共4页
[Co^11(phen)3]2[{(ZnW12O40)Co^11(phen)2(H2O)}2Co^11(trien)2(NaH2O)2]·3H2O was synthesized via hydrothermal technique and characterized with elemental analyses, IR spectroscopy, TGA-DTA, and variable t... [Co^11(phen)3]2[{(ZnW12O40)Co^11(phen)2(H2O)}2Co^11(trien)2(NaH2O)2]·3H2O was synthesized via hydrothermal technique and characterized with elemental analyses, IR spectroscopy, TGA-DTA, and variable temperature magnetic susceptibility. The compound crystallized in the monoclinic system with the space group P21/n, a=1.8210 nm, b=2.3592 nm, c=2.2932 nm, β=110.31°, V=9.239 nm^3, Z=2, R1=0.0827. The compound consists of two coordination cations, three lattice water molecules, and a macroanion [{(ZnW12O40)Co(phen)2(H2O)}2Co(C6H18N4)2·(NaH2O)2]^4- in which each supported Keggin anion [(ZnW12O40Co^11(phen)2(H2O)]^4- acts as a ligand to coordinate to central bridging Co^2+ ion via a terminal oxygen atom. Hydrogen bonds are responsible for the construction of 3D architecture of the compound. The compound is paramagnetic with a weak antiferromagnetic interaction(0=-46.796 K). 展开更多
关键词 Hydrothermal synthesis Organic-inorganic hybrid supported Keggin structure Cobalt complex Tungstozincate
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Polymerization of Methyl Methacrylate with Samarocene Complex Supported on Mesoporous Silica
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作者 Xu Feng NI Zhi Quan SHEN Hajime YASUDA 《Chinese Chemical Letters》 SCIE CAS CSCD 2001年第9期821-822,共2页
Samarocene complex was supported on a series of mesoporous silica with various pore sizes. Polymerization of methyl methacrylate (MMA) by these catalysts provide highly syndiotactic PMMAs with higher molecular weights... Samarocene complex was supported on a series of mesoporous silica with various pore sizes. Polymerization of methyl methacrylate (MMA) by these catalysts provide highly syndiotactic PMMAs with higher molecular weights compared with those obtained by solution polymerization with homogeneous catalyst system. 展开更多
关键词 Mesoporous silica supported catalyst samarocene complex
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Support vector regression model for complex target RCS predicting
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作者 Wang Gu Chen Weishi Miao Jungang 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2009年第1期65-68,共4页
The electromagnetic scattering computation has developed rapidly for many years; some computing problems for complex and coated targets cannot be solved by using the existing theory and computing models. A computing m... The electromagnetic scattering computation has developed rapidly for many years; some computing problems for complex and coated targets cannot be solved by using the existing theory and computing models. A computing model based on data is established for making up the insufficiency of theoretic models. Based on the "support vector regression method", which is formulated on the principle of minimizing a structural risk, a data model to predicate the unknown radar cross section of some appointed targets is given. Comparison between the actual data and the results of this predicting model based on support vector regression method proved that the support vector regression method is workable and with a comparative precision. 展开更多
关键词 radar cross section complex target coated target support vector regression.
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Preparation and Catalytic Properties of Polymer Supported Dendritic Metal Complex
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作者 LI Cui-ling YANG Zhi-wang +5 位作者 KANG Qiao-xiang MA Heng-chang MA Xiao-peng GAO Qi-kuan GUO Zhen LEI Zi-qiang 《合成化学》 CAS CSCD 2004年第z1期114-114,共1页
关键词 polymer supported complex CATALYSTS oxidation.
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Preparation and Characterization of Al_2O_3-TiO_2 Complex Supports by Nano-scale Self-assembly Technique
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作者 Li Kuanbiao Li Ping +1 位作者 Wang Dingcong Zhao Shanlin 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2010年第1期13-16,共4页
The two-step nano-scale self-assembly technique and the framework structure mechanism for forming mesoporous supports were employed for preparing Al2O3-TiO2 complex supports with large pore volume that were applied fo... The two-step nano-scale self-assembly technique and the framework structure mechanism for forming mesoporous supports were employed for preparing Al2O3-TiO2 complex supports with large pore volume that were applied for manufacturing the resid hydrotreating catalysts. The influence of different TiO2 contents and calcination temperatures on specific surface area, pore volume and pore size distribution of complex supports was studied. TEM and SEM were employed to characterize the Al2O3-TiO2 complex supports. Test results revealed that the specific surface area of Al2O3-TiO2 complex supports was the largest at a TiO2 mass fraction of 20%, and when the calcination temperature was in the range between 300 ℃ to 700 ℃, the pore distribution of the complex support was stable. Characterization of the complex support by TEM and SEM demonstrated that TiO2 was homo- geneously distributed in the complex support, which was in favor of carrying active components. The Al2O3-TiO2 complex supports can function as the best catalyst support for resid hydrotreating catalysts. 展开更多
关键词 nano self-assembly ALUMINA titanium dioxide complex support pore structure
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SYNTHETIC AND CATALYTIC PROPERTY STUDIES ON SILICA SUPPORTED BIS-(ACETYLACETONATO) COBALT(Ⅱ) COMPLEXES^(**)
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作者 李小虎 陆云 林思聪 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 1992年第3期210-217,共8页
This paper reports mainly the preparation of silica supported acetylacetone ligands and their cobalt complexes, the characterization of their chemical structure, and the evaluation of their catalytic activity in the r... This paper reports mainly the preparation of silica supported acetylacetone ligands and their cobalt complexes, the characterization of their chemical structure, and the evaluation of their catalytic activity in the reaction for the preparation of ethers directly from alkanols and benzyl chloride. The results indicate that those silica supported β-diketone cobalt complexes (SACO) not only can simplify the reaction procedure of the ether preparation but also show a much higher catalytic activity in comparison with other homogeneous catalysts. In addition, SACO can be recovered and reused although their catalytic activity descend gradually as a result of the decrease in their cobalt content. 展开更多
关键词 SYNTHETIC AND CATALYTIC PROPERTY STUDIES ON SILICA supportED BIS COBALT complexES ACETYLACETONATO
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Negotiated Complexity: Framing Multi-Criteria Decision Support in Environmental Health Practice
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作者 Hans Keune Johan Springael Wim De Keyser 《American Journal of Operations Research》 2013年第1期153-166,共14页
The complexity we take into account when dealing with complex issues and the way we deal with that complexity is not given or self-evident, it is framed and negotiated. Based on two environmental health decision suppo... The complexity we take into account when dealing with complex issues and the way we deal with that complexity is not given or self-evident, it is framed and negotiated. Based on two environmental health decision support case studies we address a set of key methodological choices, crucial in shaping the multi-criteria decision support and illuminate how they followed from transdisciplinary collaboration and negotiation: diversity tolerance, dealing with uncertainty and difference of opinion, weight of information and the epistemological divide between traditional closed and alternative open paradigms. The case studies exemplify the growing conviction amongst methodologists that, especially regarding complex issues, best methods do not exist as such: methods are chosen and tailored in practice and the quality to a large extent is dependent on the process in which methodological development is embedded. We hope to contribute to making explicit the importance of methodological decision making regarding environmental health complexity. 展开更多
关键词 Negotiated complexITY MULTI-CRITERIA DECISION support Environmental Health Analytical Deliberative Approach Diversity TOLERANCE Traditional-Alternative Paradigms
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State Support of Russian Agro-industrial Complex at the Federal and Regional Levels on Entering the Global Market
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作者 Irina Y. Soldatova Victor N. Ovchinnikov +1 位作者 Nikolai G. Kuznesov Alia A. Lisochenko 《Journal of Food Science and Engineering》 2012年第2期118-127,共10页
The main subject of the report consists in showing positive course of Russian agriculture over the last years-entering the global market. That's why it is essential to make following steps to support manufactures aim... The main subject of the report consists in showing positive course of Russian agriculture over the last years-entering the global market. That's why it is essential to make following steps to support manufactures aiming them more actively at export: to develop export operations; to develop actively agro-industrial complex perspectives for entering the WTO; to ensure the food safety of agro-industrial complex while exporting the products; in the context of globalization Russian regions are entering more actively the global market as the relatively independent subjects of international economical relationships. The food safety of Russia-such condition of the state economy, when food independence of the country is provided, provision; physical and economic utility of food products is guaranteed by the state and corresponds to requirements of the legislation of the Russian Federation in safety and quality. Participation in the WTO gives to the country set of advantages in the decision food independence. In the world, the country and in region management of efficiency agriculture with a view of advancement to food safety, should be coordinated necessarily with food independence. State support of the Russian agro-industrial complex on the federal and regional levels when entering into the world market-is a factor of the formation of a new geopolitical status of Russia in the world arena, it is the new selection mechanism of the development of globalization processes in favor of the active participation of the agro-industrial complex of Russia in the world economy. 展开更多
关键词 Export of agro-industrial complex state support of agro-industrial complex the introduction of agro-industrial complex of Russia into the WTO food safety regional agro-industrial complex.
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SYNTHESIS AND CATALYTIC PROPERTY OF POLYSTYRENE SUPPORTED PHENYLALANINE SCHIFF BASE COMPLEX OF Mn(Ⅱ) IN AEROBIC OXIDATION OF CYCLOHEXENE
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作者 ZHAO Ganqing XIE Jimin +1 位作者 LU Xiaoqing SUN LU 《Chinese Journal of Reactive Polymers》 2006年第2期174-180,共7页
The polystyrene supported phenylalanine Schiff base complex of Mn(Ⅱ) (PS-Sal-Phe-Mn ) was prepared with chloromethylated styrene polymer heads, 2 L-phenylalanine and manganese (Ⅱ) acetate tetrahyrate., The pol... The polystyrene supported phenylalanine Schiff base complex of Mn(Ⅱ) (PS-Sal-Phe-Mn ) was prepared with chloromethylated styrene polymer heads, 2 L-phenylalanine and manganese (Ⅱ) acetate tetrahyrate., The polymeric ligand and the complex were characterized by FT.IR,, small area X-ray photoelectron spectroscopy (XPS), and ICP-AES. in the presence of the manganese complex, cyclohexene (1) was effectively oxidized by molecular oxygen without reductant. The major products of the reaction were 2.cyclohexen-l-ol (2), 2-cyclohexen-l-one (3)and 2-cyclohexen-1-hydroperoxide (4), which was different with typical oxidation of cyclohexene. The influence of reaction temperature and additive for oxidation had been studied. The selectivity of 2-cyclohexen-l-hydroperoxide varied with reaction time and different additives. The mechanism of cyclohexene oxidation had also been discussed. 展开更多
关键词 Aerobic oxidation polystyrene supported manganese complex CYCLOHEXENE PHENYLALANINE
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SYNTHESIS AND CATALYTIC PROPERTY OF POLYSTYRENE SUPPORTED GLUTAMIC ACID SCHIFF BASE COMPLEX OF Mn(Ⅱ) IN AEROBIC OXIDATION OF CYCLOHEXENE
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作者 CHEN Songtao ZHAO Ganqing +1 位作者 LU Xiaoqing XIE Jimin 《Chinese Journal of Reactive Polymers》 2007年第1期112-118,共7页
The polystyrene supported glutamic acid Schiff base complex of Mn ( Ⅱ ) (PS-Sal-Glue-Mn) was prepared with chloromethylated styrene polymer beads, 2,4-dihydroxybenzaldehyde, L-glutamic acid and manganese ( Ⅱ )... The polystyrene supported glutamic acid Schiff base complex of Mn ( Ⅱ ) (PS-Sal-Glue-Mn) was prepared with chloromethylated styrene polymer beads, 2,4-dihydroxybenzaldehyde, L-glutamic acid and manganese ( Ⅱ ) acetate tetrahyrate. The polymeric ligand and the complex were characterized by FT-IR, small area X-ray photoelectron spectroscopy (XPS) and 1CP-AES. In the presence of the manganese complex, cyclohexene (1) was effectively oxidized by molecular oxygen without reductant. The major products of the reaction were 2-cyclohexen-l-ol (2), 2-cyclohexen-l-one (3) and 2-cyclohexen-1- hydroperoxide (4), which was different with typical oxidation of cyclohexene. The influence of reaction temperature and additive for oxidation had been studied. The selectivity of 2-cyclohexen-1-hydroperoxide varied with reaction time and different additives. The mechanism of cyclohexene oxidation had also been discussed. 展开更多
关键词 Aerobic oxidation Polystyrene supported manganese complex CYCLOHEXENE Glutamic acid.
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Synthesis and Catalytic Activities of Polymer-Supported Neodymium Complexes——Polymers Containing Thiol and Sulphoxide
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作者 李楠 林艳红 《Journal of Rare Earths》 SCIE EI CAS CSCD 2001年第2期142-144,共3页
The neodymium complexes with crosslinked polystyrene containing -CH2SH and -CH2SOCH3 groups, P-CH2SH . NdCl3 and P-CH2SOCH3. NdCl3, were prepared. P-CH2SH . NdCl3 shows no catalytic activity for butadiene polymerizati... The neodymium complexes with crosslinked polystyrene containing -CH2SH and -CH2SOCH3 groups, P-CH2SH . NdCl3 and P-CH2SOCH3. NdCl3, were prepared. P-CH2SH . NdCl3 shows no catalytic activity for butadiene polymerization, while P-CH2SOCH3. NdCl3 can catalyze the polymerization of butadiene. The content of cis-1,4-polybutadiene is more than 95%. 展开更多
关键词 rare earths polymer-supported neodymium complex butadiene polymerization CATALYST
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Hydrogenation of Toluidines Catalyzed by Silica-supported Carboxymethylcellulose-platinum Complex
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作者 WANGXin YANGJi-huo +1 位作者 HUANGMei-yu JIANGYing-yan 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2004年第2期176-179,共4页
The hydrogenation of toluidines catalyzed by silica-supported carboxymethyl cellulose platinum complex forms methylcyclohexlamines in high yields, such as m-toluidine to 3-methylcyclohexylamine, o-toluidine to 2-methy... The hydrogenation of toluidines catalyzed by silica-supported carboxymethyl cellulose platinum complex forms methylcyclohexlamines in high yields, such as m-toluidine to 3-methylcyclohexylamine, o-toluidine to 2-methylcyclohexylamine, and p-toluidine to 4-methylcyclohexylamine in 97%, 96.7% and 98.2% yields, respectively, at 30 ℃ and under atmospheric hydrogen pressure. The yields were remarkably affected by the Pt content in the complex, the kind of solvent and the reaction temperature. The catalyst was very stable and could be reused several times without remarkable change in the catalytic activity. 展开更多
关键词 HYDROGENATION Silica-supported carboxymethyl cellulose-platinum complex TOLUIDINE Methylcyclohexylamine
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Preparation and Characterization of Polymer-Supported Rare Earth Complexes
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作者 YU Guang-qian and LI Yu-liang(Changchun Institute of Applied Chemistry,Academia Sinica,Changchun,130022)Ll Xiao-li(Department of Chemistry,Changchun Normal College, College, Changchun,130032) 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1995年第4期342-353,共12页
he polymers containing different ligand groups of atoms(mainly O,N,and S)and their rare earth complexes were prepared,characterized and classified based on the type of metal-ligand bonding. The catalytic activities of... he polymers containing different ligand groups of atoms(mainly O,N,and S)and their rare earth complexes were prepared,characterized and classified based on the type of metal-ligand bonding. The catalytic activities of the complexes are briefly discussed.The polymer- supported rare earth complexes shwed much greater activities than the correspond- ing complexes with a low molecular weight. 展开更多
关键词 Rare earth complexes POLYMER-support Butadiene polymerization Catalytic activities.
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SYNTHESIS AND CHARACTERIZATION OF A SILICA-SUPPORTED CARBOXYMETHYLCELLULOSE PLATINUM COMPLEX AND ITS CATALYTIC BEHAVIORS FOR HYDROGENATI0N OF AR0MATICS
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作者 唐黎明 黄美玉 江英彦 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 1996年第3期199-204,共6页
A silica-supported carboxymethylcellulose platinum complex (abbreviated as SiO_2-CMC-Pt) has been prepared and characterized by XPS. Its catalytic properties for hydro-genation of aromatic compounds were studied. The ... A silica-supported carboxymethylcellulose platinum complex (abbreviated as SiO_2-CMC-Pt) has been prepared and characterized by XPS. Its catalytic properties for hydro-genation of aromatic compounds were studied. The results showed that this catalystcould catalyze the hydrogenation of phenol, anisol, p-cresol, benzene and toluene to cyclo-hexanol, cyclohexyl methyl ether, p-methyl cyclohexanol, cyclohexane and methylcyclo-hexane, respectively in 100% yield at 30℃ and 1 atm. In the hydrogenation of phenol,COO/Pt ratio in SiO_2-CMC-Pt has much influence on the initial hydrogenation rate andthe selectivity for the intermediate product, cyclohexanone. The highest initial rate andthe highest yield of cyclohexanone both occur at COO/Pt ratio of 6. The complex is stableduring the reaction and can be used repeatedly. 展开更多
关键词 Silica-supported carboxymethyl cellulose platinum complex HYDROGENATION Aromatic compounds
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