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在动态多孔晶体中优化了乙/二氧化碳吸附

Jie-Peng Zhang¹, Xiao-Ming Chen

¹MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China. zhangjp7@mail.sysu.edu.cn

Journal of the American Chemical Society

|March 28, 2009

概括

一个新的金属酸盐框架,MAF-2,显示出异常的乙 (C(2) H(2) 和二氧化碳 (CO(2) 吸收. 它独特的孔状动态使其具有高的C2H2吸收和储存能力,超过了传统的气瓶.

科学领域:

材料科学材料科学材料科学
化学化学化学
化学工程是化学工程的重要组成部分.

背景情况:

乙 (C(2) H(2)) 的压缩极限较低,阻碍了其储存和应用.
开发有效的C(2) H(2) 吸附剂是具有挑战性的,因为它与二氧化碳 (CO(2) 有相似之处.

研究的目的:

为了研究金属酸盐框架的C(2) H(2) / CO(2) 吸附行为,MAF-2.
阐明孔隙特征和框架动态在气体吸附中的作用.

主要方法:

气体吸附测量气体吸附测量
单晶X射线晶体学C(2) H(2) 和CO(2) 吸附复合体.
框架动态和孔隙特征的分析.

主要成果:

MAF-2 呈现出独特的静态和动态孔状特征,使其能够选择性地吸收C(2) H(2) / CO(2).
单晶分析揭示了MAF-2纳米内的C(2) H(2) /CO(2) 六合体的不同配置.
观察到西格体异热体,这表明实际应用的吸附率优化.
高C2H2吸收 (70cm3g-1) 和C2H2/CO2比率 (3.7) 在298 K,1 atm时实现.
可用的C(2) H(2) 储存容量明显高于气.

结论:

MAF-2的独特孔隙特性和框架动态导致了非凡的C(2) H(2) / CO(2) 吸附行为.
MAF-2为高效的乙储存和分离应用提供了一个有前途的材料.

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