Metal-Organic Framework with Trifluoromethyl Groups for Selective C2H2 and CO2 Adsorption

被引：29

作者：

Alduhaish, Osamah ^{[1
,2
]}

Lin, Rui-Biao ^{[2
]}

Wang, Hailong ^{[2
]}

Li, Bin ^{[2
]}

Arman, Hadi D. ^{[2
]}

Hu, Tong-Liang ^{[3
]}

Chen, Banglin ^{[2
]}

机构：

[1] King Saud Univ, Fac Sci, Dept Chem, Riyadh, Saudi Arabia

[2] Univ Texas San Antonio, Dept Chem, San Antonio, TX 78249 USA

[3] Nankai Univ, Sch Mat Sci & Engn, Natl Inst Adv Mat, Tianjin 300350, Peoples R China

来源：

CRYSTAL GROWTH & DESIGN | 2018年 / 18卷 / 08期

关键词：

CARBON-DIOXIDE; EFFICIENT REMOVAL; GAS-STORAGE; SEPARATION; ACETYLENE; THERMODYNAMICS; MIXTURES; SORPTION; PROPYNE;

D O I：

10.1021/acs.cgd.8b00506

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Reaction of CuSiF6 center dot xH(2)O and 1,4-bis(4-pyridyl)-2-trifluoromethylbenzene (bpb-CF3) through liquid diffusion produces a porous SIFSIX-type metal-organic framework, [Cu(bpb-CF3)(2)(SiF6)] (UTSA-121) containing functional trifluoromethyl groups. Single-crystal X-ray diffraction analysis of UTSA-121 shows that bpb-CF3 can well substitute for the prototypal dipyridine ligand to form a non-interpenetrated pcu framework, which is highly porous (void = 65.7%) and contains three-dimensional intersecting channels with functionalized trifluoromethyl groups on the pore surface. The Brunauer-Emmett-Teller (BET) surface area of the activated UTSA-121a is up to 1081 m(2) g(-1). Gas sorption measurements of UTSA-121a reveal high C2H2 and CO2 uptakes at room temperature. Furthermore, ideal adsorbed solution theory calculations reveal that UTSA-121a shows highly selective adsorption of C2H2 and CO2 over CH4 and N-2 under ambient conditions.

引用

页码：4522 / 4527

页数：6

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