Promising catalytic activity by non-thermal plasma synthesized SBA-15-supported metal catalysts in one-step plasma-catalytic methane conversion to value-added fuels

Chawdhury, Piu and Bhargavi, K. V. S. S. and Selvaraj, M. and Ch, Subrahmanyam (2020) Promising catalytic activity by non-thermal plasma synthesized SBA-15-supported metal catalysts in one-step plasma-catalytic methane conversion to value-added fuels. Catalysis Science & Technology, 10 (16). pp. 5566-5578. ISSN 2044-4753

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Abstract

A non-thermal dielectric barrier discharge (DBD) plasma reactor was integrated with an M/SBA-15 (M = Pd, Pt, Ag and Au) catalyst, where metal reduction was achieved by H2 plasma treatment. Subsequently, the plasma-catalytic combination mode was tested for the methane partial oxidation reaction to liquid oxygenates, and the results were compared with the plasma-only system in terms of reactant conversion, energy efficiency and product distribution. The results from the characterization of the catalysts confirmed that the plasma treatment improved the surface characteristics of the catalysts and also modified or expanded the discharge on the catalytic surface. The plasma energetic species generally helped to flatten the metal nanoparticles over the support surface, which resulted in a better dispersion with the formation of smaller nanoparticles. A total liquid selectivity of 70% was achieved for the plasma-treated Pt/SBA-15-DBD system with almost 12% CH4 conversion compared to 58% total liquid at 7% CH4 conversion with the plasma-only system.

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IITH Creators:
IITH CreatorsORCiD
Chawdhury, PiuUNSPECIFIED
Bhargavi, K.V.S.S.UNSPECIFIED
Selvaraj, M.UNSPECIFIED
Ch, Subrahmanyamhttps://orcid.org/0000-0002-2643-3854
Item Type: Article
Uncontrolled Keywords: Catalyst activity; Catalytic oxidation; Conversion efficiency; Dielectric devices; Dielectric materials; Electric discharges; Energy efficiency; Liquefied gases; Liquid methane; Metal nanoparticles; Methane; Plasma applications; Platinum compounds
Subjects: Chemistry
Chemistry > Inorganic chemistry
Chemical Engineering
Chemical Engineering > Oils, fats, waxes, gases
Divisions: Department of Chemistry
Depositing User: . LibTrainee 2021
Date Deposited: 19 Jun 2021 04:42
Last Modified: 19 Jun 2021 04:42
URI: http://raiithold.iith.ac.in/id/eprint/7943
Publisher URL: http://doi.org/10.1039/d0cy00900h
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