Hydrogen production via CO2-CH4 reforming over cobalt-supported mesoporous alumina: A kinetic evaluation

Mahadi, Bahari and Herma Dina, Setiabudi and Trinh, Duy Nguyen and Aishah, Abdul Jalil and Nurul Aini, Razali and Vo, Dai-Viet N. (2021) Hydrogen production via CO2-CH4 reforming over cobalt-supported mesoporous alumina: A kinetic evaluation. International Journal of Hydrogen Energy, 46 (48). pp. 24742-24753. ISSN 0360-3199

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Abstract

The performance of cobalt supported on mesoporous alumina (MA) under the influence of reaction temperature (923 K–1073 K) and reactant partial pressure (10 kPa–40 kPa) for CO2–CH4 reforming was executed by using a tubular fixed-bed reactor. 10%Co/MA exhibited great catalytic performance (, and), credited to the well dispersion of Co within pore MA, strong metal-support interaction, and MA confinement ability. Based on Langmuir-Hinshelwood kinetic analysis, the dissociative adsorption of both reactants on a single Co active site was selected for this study. The lower value of activation energy (28.9 kJ mol−1) suggested that Co particles were finely scattered on the MA surface. Regardless of carbon types, the amount of coke accumulated on the spent 10%Co/MA within 8 h of CO2–CH4 reforming was inhibited due to fine Co distribution inside MA structure, as well as lessened with the raise of reforming temperature from 923 to 1073 K due to improvement in reverse Boudouard reaction.

Item Type: Article
Uncontrolled Keywords: Mesoporous alumina, CO2, single bond, CH4 reforming, Cobalt, Syngas, Kinetic analysis
Subjects: T Technology > TP Chemical technology
Faculty/Division: Centre of Excellence: Centre of Excellence for Advanced Research in Fluid Flow
Faculty of Chemical and Process Engineering Technology
Depositing User: Noorul Farina Arifin
Date Deposited: 26 Apr 2022 00:06
Last Modified: 26 Apr 2022 00:06
URI: http://umpir.ump.edu.my/id/eprint/33882
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