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A Noninterpenetrated Metal-Organic Framework Built from an Enlarged Tetracarboxylic Acid for Small Hydrocarbon Separation

机译:非互穿的金属有机骨架,由扩大的四羧酸构成,用于小烃分离

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摘要

A novel noninterpenetrated metal organic framework [Cu2L-(H2O)(2)]f center dot(DMA)(18)center dot(H2O)(19) (ZJU-31, ZJU = Zhejiang University; H4L = 5', 5''''- (2,5-dimethoxy4,4-phenylene)bis [1,1' : 3',1 '' -t erphenyl] -4,4 ''-dicarboxylic acid; DMA = N,N-dimethylacetamide) has been synthesized and structurally characterized from an expanded organic linker. Interestingly, although the new linker is larger than the developed one for the construction of ZJU-30 with a doubly interpenetrated structure, the incorporation of a 1,4-dimethoxyphenyl group into the new linker enforces the formation of noninterpenetrated ZJU-31. Accordingly, the activated ZJU-31a shows a much higher porosity with a BET surface area of 1115 m(2)/g than ZTU-30a of 228 m(2)/g. ZJU-31a exhibits highly selective separation of C-2 hydrocarbons over C, methane at room temperature.
机译:一种新型的非互穿金属有机骨架[Cu2L-(H2O)(2)] f中心点(DMA)(18)中心点(H2O)(19)(ZJU-31,ZJU =浙江大学; H4L = 5',5' '''-(2,5-二甲氧基4,4-亚苯基)双[1,1':3',1''-叔二苯基] -4,4''-二羧酸; DMA = N,N-二甲基乙酰胺)已从扩展的有机连接基合成并进行结构表征。有趣的是,尽管新的连接体比用于双互穿结构的ZJU-30的构建所开发的连接体要大,但将1,4-二甲氧基苯基基团引入新的连接体会促使非互穿的ZJU-31形成。因此,活化的ZJU-31a的孔隙率比ZTU-30a的228 m(2)/ g高得多,BET表面积为1115 m(2)/ g。 ZJU-31a在室温下表现出在C,甲烷上高度选择性地分离C-2碳氢化合物的能力。

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