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Title: Synergistic Effect of Mixed Oxide on the Adsorption of Ammonia with Metal–Organic Frameworks

Journal Article · · Industrial and Engineering Chemistry Research
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  1. School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, Georgia 30332, United States

Here, a hydrotalcite-derived MgAl oxide (MMO) was evaluated in combination with the metal–organic frameworks (MOFs) UiO-66 and UiO-66- NH2 for the adsorption of ammonia. Analysis of the materials’ textural properties after ammonia breakthrough adsorption revealed no change in the PXRD patterns or FTIR spectra; however, a slight decrease in surface area was observed, consistent with the hypothesized presence of strongly adsorbed species after adsorption. UiO-66:MMO and UiO-66-NH2:MMO composites maintained ammonia adsorption capacity under dry conditions. An almost 2-fold increase in humid ammonia capacity was observed for the UiO-66:MMO composite, far beyond that expected through a linear combination of the two materials’ capacities. The synergistic effect observed in humid conditions was further investigated with water adsorption experiments, which suggested the effect is the result of the high water affinity of MMO.

Research Organization:
Georgia Institute of Technology, Atlanta, GA (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Understanding and Control of Acid Gas-induced Evolution of Materials for Energy (UNCAGE-ME); Georgia Tech Univ., Atlanta, GA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012577
OSTI ID:
1254675
Alternate ID(s):
OSTI ID: 1256475; OSTI ID: 1258465
Journal Information:
Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Vol. 55 Journal Issue: 22; ISSN 0888-5885
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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