A Combined Experimental-Computational Study on the Effect of Topology on Carbon Dioxide Adsorption in Zeolitic Imidazolate Frameworks
A Combined Experimental-Computational Study on the Effect of Topology on Carbon Dioxide Adsorption in Zeolitic Imidazolate Frameworks
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DOI：
10.1021/jp307170a
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发表时间：
2012-11-15
影响因子：
3.7
通讯作者：
Laird, Brian B.
中科院分区：
文献类型：
--
作者：
Morris, William;He, Ning;Laird, Brian B.
我们报告了四种沸石咪唑盐框架（zif）在55 bar下的CO2吸附数据，即ZIF-7， ZIF-11， ZIF-93和ZIF-94。修改合成条件可以获得具有相同金属离子和有机链接的不同拓扑结构：ZIF-7 （ZIF-94）具有sod拓扑结构，ZIF-11 （ZIF-93）具有rho拓扑结构。不同的拓扑结构，具有固定的金属离子和咪唑酸盐功能，使这些系统成为研究拓扑结构对zif气体吸附影响的理想选择。实验表明，在低压条件下，孔径较小的拓扑结构（ZIF-7和94）比孔径较小的拓扑结构（ZIF-11和93）具有更大的吸附量。
We report CO2 adsorption data for four zeolitic imidazolate frameworks (ZIFs) to 55 bar, namely ZIF-7, ZIF-11, ZIF-93, and ZIF-94. Modification of synthetic conditions allows access to different topologies with the same metal ion and organic link: ZIF-7 (ZIF-94) having sod topology and ZIF-11 (ZIF-93) having the rho topology. The varying topology, with fixed metal ion and imidazolate functionality, makes these systems ideal for studying the effect of topology on gas adsorption in ZIFs. The experiments show that the topologies with the smaller pores (ZIF-7 and 94) have larger adsorptions than their counterparts (ZIF-11 and 93, respectively) at low pressures (