Study of Short-Term Catalyst Deactivation Due to Carbon Deposition during Biogas Dry Reforming on Supported Ni Catalyst

Pawar, V and Ray, D and Ch, Subrahmanyam and Janardhanan, V M (2015) Study of Short-Term Catalyst Deactivation Due to Carbon Deposition during Biogas Dry Reforming on Supported Ni Catalyst. Energy and Fuels, 29 (12). pp. 8047-8052. ISSN 0887-0624

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Abstract

Dry reforming experiments are performed for five different CH4/CO2 ratios at three different operating temperatures. The focus of the work is on the short-term catalyst deactivation due to carbon deposition and analysis of the nature and structure of deposited carbon at CH4/CO2 ratio of 2, which is typical for biogas. The dry reforming experiments indicate that the short-term deactivation is insignificant at an equimolar ratio of CH4 and CO2. The rate of carbon deposition becomes faster at higher CH4/CO2 ratios and higher temperatures. CH4 and CO2 conversions and the exit mole fraction of CO and H2 confirm the occurrence of the reverse water–gas shift reaction. Characterization of the spent catalyst and deposited carbon is performed using XRD, TGA, FTIR, and Raman spectroscopies, which indicates the presence of graphitic carbon and carbon nanostructures.

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IITH Creators:
IITH CreatorsORCiD
Ch, SubrahmanyamUNSPECIFIED
Janardhanan, V Mhttp://orcid.org/0000-0002-3458-4169
Item Type: Article
Subjects: Chemistry
Chemical Engineering > Explosives, fuels, related products
Divisions: Department of Chemical Engineering
Department of Chemistry
Depositing User: Team Library
Date Deposited: 08 Jan 2016 09:29
Last Modified: 05 Jul 2017 10:49
URI: http://raiith.iith.ac.in/id/eprint/2107
Publisher URL: https://doi.org/10.1021/acs.energyfuels.5b01862
OA policy: http://www.sherpa.ac.uk/romeo/issn/0887-0624/
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