Chromium-based metal-organic framework MIL-101 as a highly effective catalyst in plasma for toluene removal. (1st November 2017)

• Record Type: Journal Article
• Authors: Wu, Junliang; Xia, Qibin; Xiao, Jing; Li, Zhong
• Is Part Of: Journal of physics. Volume 50:Number 47(2017)
• Publication Date: 2017-11-01
• Subjects: plasma -- catalyst -- MIL-101 -- toluene -- oxidation -- by-products; Physics -- Periodicals; 530
• DOI: 10.1088/1361-6463/aa90f3
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: Catalytic performance of MIL-101—a type of chromium-based metal-organic frameworks (MOFs)—in a plasma catalysis system for toluene removal was experimentally studied. The MIL-101 was synthesized using a hydrothermal method, and its catalytic performance was compared to two other catalysts, Cr2 O3 / γ -Al2 O3 and γ -Al2 O3, in a dielectric barrier discharge (DBD) reactor. Results showed that the presence of a catalyst in plasma changed the voltage and current characteristic substantially, and promoted the performance of the plasma reactor. Among the catalysts, the MIL-101 exhibited a significantly high toluene conversion, which was 20% and 35% higher than Cr2 O3 / γ -Al2 O3 and γ -Al2 O3, respectively, under the same testing conditions, as well as higher carbon balance and CO2 selectivity. The analysis of by-products on the surfaces of the catalysts before and after reaction demonstrated that MIL-101 had better resistance towards by-products accumulation compared to Cr2 O3 / γ -Al2 O3 and γ -Al2 O3 . The loading of MnO x on MIL-101 further promoted its catalytic performance. MIL-101 exhibits attractive catalytic properties as a catalyst in a plasma catalysis system for the decomposition of volatile organic compounds.