A Robust Metal-Organic Framework Combining Open Metal Sites and Polar Groups for Methane Purification and CO2/Fluorocarbon Capture.
A 3D porous perchlorinated metal-organic framework (MOF), LIFM-26, featuring dual functionality, that is, functional polar groups and open metal sites, has been synthesized using perchlorinated linear dicarboxylate to link trigonal prismatic Fe3(μ3-O) units. LIFM-26 exhibits good thermal and chemical stability, and possesses high porosity with a BET surface area of 1513 m2g-1, compared with isoreticular MOF-235 and Fe3O(F4BDC)3(H2O)3(F4BDC=2,3,5,6-tetrafluorobenzene-1,4-dicarboxylate). Most strikingly, LIFM-26 features good gas sorption/separation performance at 298 K and 1 atm with IAST selectivity values reaching up to 36, 93, 23, 11, 46, and 202 for CO2/CH4, CO2/N2, C2H4/CH4, C2H6/CH4, C3H8/CH4, and R22/N2(R22=CHClF2), respectively, showing potential for use in biogas/natural gas purification and CO2/R22 capture.
MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, Sun Yat-Sen University, Guangzhou, 510275, P. R. China.
Cheng-Xia
CX
Chen
MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, Sun Yat-Sen University, Guangzhou, 510275, P. R. China.
Shao-Ping
SP
Zheng
MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, Sun Yat-Sen University, Guangzhou, 510275, P. R. China.
Zhang-Wen
ZW
Wei
MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, Sun Yat-Sen University, Guangzhou, 510275, P. R. China.
Chen-Chen
CC
Cao
MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, Sun Yat-Sen University, Guangzhou, 510275, P. R. China.
Hai-Ping
HP
Wang
MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, Sun Yat-Sen University, Guangzhou, 510275, P. R. China.
Dawei
D
Wang
MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, Sun Yat-Sen University, Guangzhou, 510275, P. R. China.
Ji-Jun
JJ
Jiang
MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, Sun Yat-Sen University, Guangzhou, 510275, P. R. China.
Dieter
D
Fenske
MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, Sun Yat-Sen University, Guangzhou, 510275, P. R. China.
Cheng-Yong
CY
Su
carbon dioxide adsorption; chemical stability; light hydrocarbons; metal-organic frameworks; open metal sites; polar functional groups