|
|||||
|
|
Adsorptive Separation of Acetylene from Ethylene in Isostructural Gallate-Based Metal–Organic Frameworks |
|
| Authors: | Dr Jiawei Wang Liangying Li Lidong Guo Yingcai Zhao Danyan Xie Prof Zhiguo Zhang Dr Qiwei Yang Prof Yiwen Yang Prof Zongbi Bao Prof Qilong Ren |
| Institution: | 1. Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027 P. R. China
Hangzhou Hangyang Co., Ltd, Hangzhou, 310014 P. R. China These authors contributed equally to this work.;2. Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027 P. R. China;3. Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027 P. R. China Institute of Zhejiang University–Quzhou, Quzhou, 324000 P. R. China |
| Abstract: | The separation of acetylene from ethylene is of paramount importance in the purification of chemical feedstocks for industrial manufacturing. Herein, an isostructural series of gallate-based metal–organic frameworks (MOFs), M-gallate (M=Ni, Mg, Co), featuring three-dimensionally interconnected zigzag channels, the aperture size of which can be finely tuned within 0.3 Å by metal replacement. Controlling the aperture size of M-gallate materials slightly from 3.69 down to 3.47 Å could result in a dramatic enhancement of C2H2/C2H4 separation performance. As the smallest radius among the studied metal ions, Ni-gallate exhibits the best C2H2/C2H4 adsorption separation performance owing to the strongest confinement effect, ranking after the state-of-the-art UTSA-200a with a C2H4 productivity of 85.6 mol L?1 from 1:99 C2H2/C2H4 mixture. The isostructural gallate-based MOFs, readily synthesized from inexpensive gallic acid, are demonstrated to be a new top-performing porous material for highly efficient adsorption of C2H2 from C2H4. |
| Keywords: | acetylene adsorptive separation ethylene gallate metal–organic frameworks |