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Tuning the CO2 and C1/C2 Hydrocarbon Capture and Separation Performance for a Zn-F-Triazolate Framework through Functional Amine Groups

Authors :
Mancheng Hu
Quan-Guo Zhai
Hua-Ming Sun
Yucheng Jiang
Shu-Ni Li
Hai-Peng Li
Source :
Crystal Growth & Design. 18:3229-3235
Publication Year :
2018
Publisher :
American Chemical Society (ACS), 2018.

Abstract

Functionalization by amine groups has been recognized as an effective route to promote the gas capture and separation performance of MOF materials; however, it remains elusive to date what is the optimal number of functional amine groups and which specific MOFs are suitable to be functionalized. To answer these questions, systemic investigations on the interactions between gas molecules and NH2-functionalized MOFs are necessary. Here a microporous Zn-F-triazolate framework which can be easily decorated by different −NH2 groups is selected (Zn-F-TRZ, Zn-F-ATRZ, and Zn-F-DATRZ; TRZ = 1,2,4-triazole, ATRZ = 3-amino-1,2,4-triazole, DATRZ = 3,5-diamino-1,2,4-triazole) to discuss the effect of amine groups on CO2 and C1/C2 hydrocarbon capture and separation. When the pressure is lower than about 0.15 atm, the CO2 uptakes increase directly with the number of anime groups (Zn-F-TRZ < Zn-F-ATRZ < Zn-F-DATRZ). However, at 1 atm, the decoration of one amine group effectively improves the CO2 adsorption of the Zn-F-t...

Details

ISSN :
15287505 and 15287483
Volume :
18
Database :
OpenAIRE
Journal :
Crystal Growth & Design
Accession number :
edsair.doi...........6ff8820e68d2996980c056327edec73d