Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/116355
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Type: Journal article
Title: Functionalized UiO-66 by single and binary (OH)₂ and NO₂ groups for uptake of CO₂ and CH₄
Other Titles: Functionalized UiO-66 by single and binary (OH)(2) and NO(2) groups for uptake of CO(2) and CH(4)
Author: Rada, Z.
Abid, H.
Shang, J.
Sun, H.
He, Y.
Webley, P.
Liu, S.
Wang, S.
Citation: Industrial and Engineering Chemistry Research, 2016; 55(29):7924-7932
Publisher: American Chemical Society
Issue Date: 2016
ISSN: 0888-5885
1520-5045
Statement of
Responsibility: 
Zana Hassan Rada, Hussein Rasool Abid, Jin Shang, Hongqi Sun, Yingdian He, Paul Webley, Shaomin Liu and Shaobin Wang
Abstract: The metal-organic frameworks UiO-66 with single or binary −(OH)₂ and −NO₂ functional groups were synthesized, and their structures and properties were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, scanning electron microscopy, and nitrogen adsorption isotherms. Their performances in CO₂ and CH₄ adsorption at high pressures and different temperatures (273 and 298 K) were also determined. Singly functionalized UiO-66-(OH)₂ had a lower thermal stability than UiO-66-NO₂, but the thermal stability of binary UiO-66-(OH)₂-NO₂ significantly improved to 650 K. The binary-functionalized samples UiO-66-(OH)₂-NO₂ and UiO-66-NO₂-(OH)₂ displayed higher CH₄ and CO₂ adsorption than UiO-66-(OH)₂ and UiO-66-NO₂. The CO₂ adsorption capacities of UiO-66-(OH)₂-NO₂ and UiO-66-NO₂-(OH)₂ were 4.65 and 7.35 mmol/g, respectively, at 273 K and 900 kPa. UiO-66-(OH)₂ had a higher separation factor for selective separation of CO₂ from CH₄, especially at low pressures up to 100 kPa; the separation factor ranged from 4.9 at about 100 kPa to 5.8 at 60 kPa.
Rights: © 2015 American Chemical Society
DOI: 10.1021/acs.iecr.5b04061
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