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Shaping of gallate-based metal-organic frameworks for adsorption separation of ethylene from acetylene and ethane.
Journal of Colloid and Interface Science ( IF 9.9 ) Pub Date : 2020-07-26 , DOI: 10.1016/j.jcis.2020.07.111
Kaiyi Wu 1 , Lidong Guo 1 , Zhiguo Zhang 2 , Qiwei Yang 2 , Yiwen Yang 2 , Qilong Ren 2 , Zongbi Bao 2
Affiliation  

Shaping metal-organic frameworks (MOFs) powders into formed bodies plays a crucial role in opening up the excellent properties of MOFs to a broad range of applications. Gallate-based MOFs, termed as M-gallate (M = Co, Mg, Ni), have shown excellent performance for adsorption separation of C2 hydrocarbons. However, the industrial applications of MOF powders will inevitably confront problems of high pressure drop, pipe blockage, and dust pollution. Herein, we use hydroxypropyl cellulose (HPC) as a binder to produce gallate-based MOFs pellets. The crystal structure of the well-shaped materials after molding remained intact, and the surface area of the materials hardly decreases after shaping. Adsorption isotherms of C2 hydrocarbons including ethylene, ethane and acetylene on the activated powders and pellets of M-gallate were recorded and compared with the outperformers. The shaped pellets were also examined by breakthrough experiments on the fixed-bed separation of C2H2/C2H4 (1:99, v/v) and C2H4/C2H6 (50:50, v/v) gas mixtures. These results proved that M-gallate pellets was promising candidates for the practical industrial realization of C2 hydrocarbons separation.



中文翻译:

基于没食子酸酯的金属-有机骨架的形状,用于乙烯与乙炔和乙烷的吸附分离。

将金属有机骨架(MOF)粉末成型为成型体在将MOF的优异性能向广泛的应用中发挥关键作用。基于没食子酸酯的MOF(称为M-没食子酸酯(M = Co,Mg,Ni))表现出出色的吸附分离C 2烃的性能。然而,MOF粉末的工业应用将不可避免地面临高压降,管道堵塞和粉尘污染的问题。在本文中,我们使用羟丙基纤维素(HPC)作为粘合剂来生产基于没食子酸酯的MOF颗粒。成型后的良好形状的材料的晶体结构保持完整,并且成型后材料的表面积几乎不减小。C 2的吸附等温线记录了活化粉末和M-gallate颗粒上的乙烯,乙烷和乙炔等碳氢化合物,并将其与优异的产品进行了比较。还通过突破性实验对C 2 H 2 / C 2 H 4(1:99,v / v)和C 2 H 4 / C 2 H 6(50:50,v / v)混合气体。这些结果证明,M-没食子酸酯粒料是用于C 2烃分离的实际工业实现的有前途的候选者。

更新日期:2020-08-06
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