A robust metal-organic framework with guest molecules induced splint-like pore confinement to construct propane-trap for propylene purification

被引：27

作者：

Chang, Miao ^{[1
,2
]}

Ren, Jiahao ^{[1
]}

Wei, Yan ^{[1
,2
]}

Wang, Jie-Xin ^{[1
,2
]}

Yang, Qingyuan ^{[1
]}

Liu, Dahuan ^{[1
]}

Chen, Jian-Feng ^{[1
,2
]}

机构：

[1] Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China

[2] Beijing Univ Chem Technol, Minist Educ High Grav Engn & Technol, Res Ctr, Beijing 100029, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2021年 / 279卷

基金：

中国国家自然科学基金;

关键词：

Adsorption; Metal-organic frameworks; Splint effect; Paraffin; olefin separation; Molecular recognition; TOTAL-ENERGY CALCULATIONS; MULTICOMPONENT ADSORPTION; KINETIC SEPARATION; PROPENE; ETHANE; CH4; GRADIENT; ETHYLENE; ZEOLITE; N-2;

D O I：

10.1016/j.seppur.2021.119656

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

It is an extremely challenging task to capture C3H8 from the C3H8/C3H6 mixture, which requires an adsorbent with a specific pore structure. Herein, an ultramicroporous pillared metal-organic framework Ni(ADC)(TED)0.5 is reported for efficient C3H8/C3H6 separation. Theoretical calculations revealed that the ADC ligand may form a splint-like pore confinement structure induced by the introduction of guest molecules to construct a propane-trap in the framework. As a result, excellent separation performance for C3H8/C3H6 is obtained. A record-high IASTpredicted selectivity (6.4), C3H8/C3H6 uptake ratio (111.0%), C3H8 Henry constant (2159.2 mmol g-1 bar-1), and separation potential (1943.0 mmol L-1) exceed those in porous adsorbents reported so far. Breakthrough experiments indicate that Ni(ADC)(TED)0.5 can completely separate C3H8/C3H6 mixture with the highest C3H6 productivity (0.085 mmol g-1) and good regenerability. These results show that this material has great potential application in C3H8/C3H6 separation.

引用

页数：8