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Synthesis,crystal structure and adsorption properties of a novel Fe(Ⅲ) porous coordination polymer containing 1,4-naphthalenedicarboxylate ligand 被引量:1
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作者 陈金喜 孟伟伟 张若冰 《Journal of Southeast University(English Edition)》 EI CAS 2011年第1期107-110,共4页
A novel porous coordination polymer,iron naphthalenedicarboxylate Fe(OH)(1,4-NDC)·2H2O is hydrothermally synthesized by the reaction of FeSO4·7H2O and 1,4-naphthalenedicarboxylic acid(1,4-H2NDC) at 150... A novel porous coordination polymer,iron naphthalenedicarboxylate Fe(OH)(1,4-NDC)·2H2O is hydrothermally synthesized by the reaction of FeSO4·7H2O and 1,4-naphthalenedicarboxylic acid(1,4-H2NDC) at 150℃.The compound crystallizes in a tetragonal space group P42/nmc:a=2.1447(4) nm,c=0.68849(14) nm,V=3.1669(11) nm3,Z=8,R=0.0845,wR=0.1829.The crystal structure exhibits a three-dimensional framework which is composed of infinite chains of corner-sharing octahedral Fe(OH)2O4 with 1,4-NDC ligands forming two types of channels with square-shaped cross-sections.The large channels present a cross-section of 0.76 nm×0.76 nm,while the small channels are about 0.30 nm×0.30 nm.No structural transformation occurs after removing the guest water molecules,while a robust structure generates with permanent porosity.The adsorption measurements show that the anhydrous sample of the compound can adsorb CO2 into its pores.The adsorption isotherms for methanol,acetone,tetrahydrofuran and benzene are also measured. 展开更多
关键词 porous coordination polymer selective adsorption 1 4-naphthalenedicarboxylic acid
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Efficient catalytic conversion of carbohydrates into 5-ethoxymethylfurfural over MIL-101-based sulfated porous coordination polymers 被引量:6
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作者 Xiaofang Liu Hu Li +5 位作者 Hu Pan Heng Zhang Shan Huang Kaili Yang Wei Xue Song Yang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2016年第3期523-530,共8页
In this work, a series of MIL-101-SO3H(x) polymeric materials were prepared and further used for the first time as efficient heterogeneous catalysts for the conversion of fructose-based carbohydrates into 5-ethoxyme... In this work, a series of MIL-101-SO3H(x) polymeric materials were prepared and further used for the first time as efficient heterogeneous catalysts for the conversion of fructose-based carbohydrates into 5-ethoxymethylfurfural(EMF) in a renewable mixed solvent system consisting of ethanol and tetrahydrofuran(THF). The influence of –SO3H content on the acidity as well as on the catalytic activity of the porous coordination polymers in EMF production was also studied. High EMF yields of 67.7% and 54.2% could be successively obtained from fructose and inulin in the presence of MIL-101-SO;H(100) at 130 °C for 15 h.The catalyst could be reused for five times without significant loss of its activity and the recovery process was facile and simple. This work provides a new platform by application of porous coordination polymers(PCPs) for the production of the potential liquid fuel molecule EMF from biomass in a sustainable solvent system. 展开更多
关键词 porous coordination polymers Biofuels 5-ethoxymethylfurfural MIL-101-SO_3H
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In situ protonation in a locally flexible porous coordination polymer for enhancing proton-carrier loading and proton conductivity
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作者 Xianzhe Wei Jincheng Liu +5 位作者 Yan Su Weitao Wang Guixiang Wang Gen Zhang Ping Wang Cheng Gu 《Science China Chemistry》 SCIE EI CAS CSCD 2024年第10期3432-3437,共6页
Designing efficient proton-conductive materials is crucial in fuel cells.Yet,it remains a substantial challenge because of the issues in proton mobility,proton-carrier amount,and orientation of proton host materials.H... Designing efficient proton-conductive materials is crucial in fuel cells.Yet,it remains a substantial challenge because of the issues in proton mobility,proton-carrier amount,and orientation of proton host materials.Herein,we report an in-situ protonation strategy to produce a locally flexible porous coordination polymer(PCP)to enhance the proton-carrier loading and proton conductivity.The local dipole flipping of the ligand allows effective proton exchange with low activation energy,promoting interpore proton transport through the pore apertures and pore walls.The protonation induces substantial charges to the frameworks and enhances the interaction with proton carriers,thereby increasing the loading of the proton carriers.By this design strategy,the resulting PCP exhibits enhanced phosphoric acid loading and extraordinary proton conductivities under both aqueous and anhydrous conditions compared to its isoreticular analog that features rigidity without proton-exchange capability.Our work provides a new avenue for designing proton-conductive materials that combine structural dynamics with performance merits. 展开更多
关键词 porous coordination polymers in-situ protonation local flexibility proton-exchange mechanism proton conduction
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Porous coordination polymers based on three planar rigid ligands 被引量:12
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作者 ZHONG DiChang LU TongBu 《Science China Chemistry》 SCIE EI CAS 2011年第9期1395-1406,共12页
During the last two decades,porous coordination polymers(PCPs),usually called as metal-organic frameworks(MOFs),have been developed rapidly due to their versatile structural diversities and potential physical and chem... During the last two decades,porous coordination polymers(PCPs),usually called as metal-organic frameworks(MOFs),have been developed rapidly due to their versatile structural diversities and potential physical and chemical functions.This article provides a short review of recent advances in the design and constructions of porous coordination polymers based on three planar rigid ligands,including imidazole-4,5-dicarboxlate(H3IDC),1H-tetrazole(HTz),as well as 1H-tetrazole-5-carboxylate(H2Tzc).Their preparations,crystal structures,and desirable properties have been reviewed. 展开更多
关键词 porous coordination polymers metal-organic frameworks planar rigid ligands imidazole-4 5-dicarboxlate 1H-tetrazole 1H-tetrazole-5-carboxylate
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Recent advance in porous coordination polymers from the viewpoint of crystalline-state transformation 被引量:8
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作者 YIN Zheng ZENG MingHua 《Science China Chemistry》 SCIE EI CAS 2011年第9期1371-1394,共24页
Recently,research of crystalline-state transformation involving the removal/inclusion of guest molecules in porous coordination polymers(PCPs) was underway.Crystalline-state transformation,especially,single-crystal to... Recently,research of crystalline-state transformation involving the removal/inclusion of guest molecules in porous coordination polymers(PCPs) was underway.Crystalline-state transformation,especially,single-crystal to single-crystal(SC-SC) transformation as new method for the direct observation of host-guest chemistry,can reveal the intrinsic relevance and interaction between the framework and guest molecules.This review describes our work concerning PCPs and recent investigations of others,within the last four years,from the viewpoint of crystalline-state transformations of PCPs on guest removal or inclusion processes.Ligand substitution reaction and postsynthetic modification of PCPs in SC-SC fashion which were distinguished from conventional crystalline-state transformation triggered by guest removal or exchange were highlighted in this review.The research status of crystalline-state transformation in China was briefly introduced as well.Series of structure analysis techniques including single-crystal X-ray diffraction,powder X-ray diffraction,neutron diffraction,inelastic neutron scattering as well as the application of synchrotron radiation light source will inevitably promote the advance of study of crystalline-state transformation.And as a hotspot,deep investigations of crystalline-state transformation also help us to overcome the challenge of achieving multifunction and the correlation among them,such as sorption,magnetism,optical or electrical properties simultaneously in PCPs and contribute to design stimulate-oriented porous intelligent materials in the future. 展开更多
关键词 porous coordination polymer crystalline-state transformation ligand substitution reaction postsynthetic modification structure analysis techniques
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Facile electrochemical synthesis of nano iron porous coordination polymer using scrap iron for simultaneous and cost-effective removal of organic and inorganic arsenic 被引量:2
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作者 Mengni Zhang Jia Jia +2 位作者 Ke Huang Xiandeng Hou Chengbin Zheng 《Chinese Chemical Letters》 SCIE CAS CSCD 2018年第3期456-460,共5页
Although large amounts of engineered nanomaterials have been used for the arsenic removal, today there still remains several serious impediments to its further application, including consumption of expensive and pure ... Although large amounts of engineered nanomaterials have been used for the arsenic removal, today there still remains several serious impediments to its further application, including consumption of expensive and pure salts, and only application for the removal of inorganic arsenic. In this work, we developed an eco-economic and facile electrochemical method to synthesize iron porous coordination polymers (FePCPs) for the simultaneous removal of inorganic and organic arsenic from natural water. 展开更多
关键词 Electrochemical synthesis Iron porous coordination polymer Arsenic removal
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Efficient CO_2/N_2 separation by mixed matrix membrane with amide functionalized porous coordination polymer filler
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作者 Qianqian Li Jingui Duan Wanqin Jin 《Chinese Chemical Letters》 SCIE CAS CSCD 2018年第6期854-856,共3页
Mixed matrix membrane used to selective removal of CO2 was considered as an efficient solution to energy and environmental sustainability. In this study, a MMM that consists of amide functionalized porous coordination... Mixed matrix membrane used to selective removal of CO2 was considered as an efficient solution to energy and environmental sustainability. In this study, a MMM that consists of amide functionalized porous coordination polymer filler(MIL-53-NH2) was successfully prepared, which sharply promotes the CO2/N2 selectivity from 44(neat polymeric membrane) to 75. Remarkably, the positive effect of amide group and nanochannel of MIL-53-NH2 filler was illustrated by decreased selectivity of the MMM with formic acid modified MIL-53-NH2 filler(MIL-53-NHCOH). 展开更多
关键词 porous coordination polymer Mixed matrix membrane CO2/N2 separation Amide group
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Multistep evolution from a metal–organic framework to ultrathin nanosheets 被引量:3
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作者 Yun Li Jin Huang +5 位作者 Zong-Wen Mo Xue-Wen Zhang Xiao-Ning Cheng Li Gong Dong-Dong Zhou Jie-Peng Zhang 《Science Bulletin》 SCIE EI CAS CSCD 2019年第14期964-967,共4页
Two-dimensional (2D) materials and ultrathin nanosheets have attracted tremendous research interests [1-4]. Exfoliation of porous coordination polymers (PCPs) or metal-organic frameworks (MOFs) with 2D coordination st... Two-dimensional (2D) materials and ultrathin nanosheets have attracted tremendous research interests [1-4]. Exfoliation of porous coordination polymers (PCPs) or metal-organic frameworks (MOFs) with 2D coordination structures is emerging as a viable strategy for preparation of new types of 2D materials [5-8]. The relatively weak bonding within and strong interactions between 2D coordination networks are the main problems for successful exfoliation [9]. Pretreatments of the layered MOFs to expand the interlayer distances can be helpful [10-12]. Capturing the exfoliation intermediates and visualizing their structures are valuable for understanding the exfoliation mechanism and confirming the structures of the final 2D materials [11,12]. 展开更多
关键词 Two-dimensional (2D) porous coordination polymers (PCPs) METAL-ORGANIC frameworks (MOFs)
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Dynamic Pendulum Effect of an Exceptionally Flexible Pillared-Layer Metal-Organic Framework 被引量:2
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作者 Hao-Long Zhou Jie Bai +2 位作者 Xiao-Yun Tian Zong-Wen Mo Xiao-Ming Chen 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2021年第10期2718-2724,共7页
Main observation and conclusion Magnifying the controllable directional motions of molecular machines to the macroscopic levels is a significant topic for chemists.Flexible metal–organic frameworks with long-range or... Main observation and conclusion Magnifying the controllable directional motions of molecular machines to the macroscopic levels is a significant topic for chemists.Flexible metal–organic frameworks with long-range order and responsive structural transformation under external stimuli may be an appropriate platform for achieving the target.By taking advantage of the single-crystal to single-crystal manner of soft porous crystals,we utilize single-crystal X-ray diffraction to directly observe the dynamic structural inversion of a new three-fold interpenetrated pillared-layer metal-organic framework[Co(edba)(bpy)](MCF-83,H2edba=4,4’-(ethyne-1,2-diyl)dibenzoic acid,bpy=4,4’-bipyridine).More interestingly,the dynamic inversions of the pillars and layers are selectively guest-controllable and independent,allowing precise control of the directional shape changes,which is the key of constructing intelligent materials to accomplish a complex task.The mechanism is further studied by combining the X-ray diffraction analyses,sorption measurements and molecular simulations. 展开更多
关键词 porous coordination polymers Metal-organic frameworks Structural transformation X-ray diffraction ADSORPTION
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