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学科主题: 物理化学
题名: Metal-Substituted Zeolitic Imidazolate Framework ZIF-108: Gas-Sorption and Membrane-Separation Properties
作者: Ban, Yujie1, 2;  Li, Yanshuo1;  Peng, Yuan1, 2;  Jin, Hua1, 2;  Jiao, Wenmei1, 2;  Liu, Xinlei1;  Yang, Weishen1
通讯作者: 李砚硕 ;  杨维慎
关键词: adsorption ;  membranes ;  metal-organic frameworks ;  zeolite analogues ;  zinc
刊名: CHEMISTRY-A EUROPEAN JOURNAL
发表日期: 2014-09-01
DOI: 10.1002/chem.201402287
卷: 20, 期:36, 页:11402-11409
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: A series of dual-metal zeolitic imidazolate framework (ZIF) crystals with SOD and RHO topologies was synthesised by metal substitution from ZIF-108 (Zn(2-nitroimidazolate)(2), SOD topology) as the parent material. This was based on the concept that metal substitution of ZIF-108 requires a much lower activation energy than homogenous nucleation owing to the metastability of ZIF-108. In-depth investigations of the formation processes of the daughter ZIFs indicated that the transformation of ZIF-108 is a dissolution/heterogeneous nucleation process. Typical isostructural Co2+ substitution mainly occurs at the outer surface of ZIF-108 and results in a core-shell structure. On the contrary, the Cu2+-substituted ZIF has a RHO topology with a homogeneous distribution of Cu2+ ions in the structure. Substitution with Ni2+ resulted in a remarkable enhancement in adsorption selectivity toward CO2 over N-2 by a factor of up to 227. With Co2+-substituted nanoparticles as inorganic filler, a mixed matrix membrane based on polysulfone displayed greatly improved performance in the separation of H-2/CH4, CO2/N-2 and CO2/CH4.
关键词[WOS]: MIXED-MATRIX MEMBRANES ;  SELECTIVE CO2 UPTAKE ;  ORGANIC FRAMEWORKS ;  LIGAND-EXCHANGE ;  SINGLE-CRYSTAL ;  PROPYLENE/PROPANE SEPARATION ;  POSTSYNTHETIC LIGAND ;  LINKER SYNTHESIS ;  DRUG-DELIVERY ;  MOF MEMBRANES
语种: 英语
WOS记录号: WOS:000341629800022
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/144541
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Ban, Yujie,Li, Yanshuo,Peng, Yuan,et al. Metal-Substituted Zeolitic Imidazolate Framework ZIF-108: Gas-Sorption and Membrane-Separation Properties[J]. CHEMISTRY-A EUROPEAN JOURNAL,2014,20(36):11402-11409.
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