Natural gas upgrading using a fluorinated MOF with tuned H2S and CO2 adsorption selectivity

被引：262

作者：

Belmabkhout, Youssef ^{[1
]}

Bhatt, Prashant M. ^{[1
]}

Adil, Karim ^{[1
]}

Pillai, Renjith S. ^{[2
]}

Cadiau, Amandine ^{[1
]}

Shkurenkol, Aleksander ^{[1
]}

Maurin, Guillaume ^{[2
]}

Liu, Gongping ^{[3
]}

Koros, Williamj ^{[3
]}

Eddaoudi, Mohamed ^{[1
]}

机构：

[1] KAUST, Funct Mat Design Discovery & Dev Res Grp FMD3, Adv Membranes & Porous Mat Ctr, Div Phys Sci & Engn, Thuwal, Saudi Arabia

[2] Univ Montpellier, UMR CNRS 5253, Inst Charles Gerhardt Montpellier, Montpellier, France

[3] Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA

来源：

NATURE ENERGY | 2018年 / 3卷 / 12期

关键词：

METAL-ORGANIC FRAMEWORKS; EARTH FCU-MOFS; AIR CAPTURE; PORE-SIZE; REMOVAL; PLATFORM; DESIGN; SEPARATION; CONSTRUCTION; CAPACITY;

D O I：

10.1038/s41560-018-0267-0

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The process used to upgrade natural gas, biogas and refinery-off-gas directly influences the cost of producing the fuel and often requires complex separation strategies and operational systems to remove contaminants such as hydrogen sulfide (H2S) and carbon dioxide (CO2). Here we report a fluorinated metal-organic framework (MOF), AIFFIVE-1-Ni, that allows simultaneous and equally selective removal of CO2 and H2S from CH4-rich streams in a single adsorption step. The simultaneous removal is possible for a wide range of H2S and CO2 compositions and concentrations of the gas feed. Pure component and mixed gas adsorption, single-crystal X-ray diffraction and molecular simulation studies were carried out to elucidate the mechanism governing the simultaneous adsorption of H2S and CO2. The results suggest that concurrent removal of CO2 and H2S is achieved via the integrated favourable sites for H2S and CO2 adsorption in a confined pore system. This approach offers the prospect of simplifying the complex schemes for removal of acid gases.

引用

页码：1059 / 1066

页数：8

共 57 条

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