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Catalyst Deactivation Simulation Through Carbon Deposition in Carbon Dioxide Reforming over Ni/CaO-Al2O3 Catalyst

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Author(s): Istadi Istadi | Didi D. Anggoro | Nor Aishah Saidina Amin | Dorothy Hoo Wei Ling

Journal: Bulletin of Chemical Reaction Engineering & Catalysis
ISSN 1978-2993

Volume: 6;
Issue: 2;
Start page: 129;
Date: 2011;
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Keywords: CO2 reforming of methane | CORM | Ni/CaO-Al2O3 | coke formation | micro-kinetic modeling | simulation

ABSTRACT
Major problem in CO2 reforming of methane (CORM) process is coke formation which is a carbonaceousresidue that can physically cover active sites of a catalyst surface and leads to catalyst deactivation. A keyto develop a more coke-resistant catalyst lies in a better understanding of the methane reforming mechanismat a molecular level. Therefore, this paper is aimed to simulate a micro-kinetic approach in order tocalculate coking rate in CORM reaction. Rates of encapsulating and filamentous carbon formation are alsoincluded. The simulation results show that the studied catalyst has a high activity, and the rate of carbonformation is relatively low. This micro-kinetic modeling approach can be used as a tool to better understandthe catalyst deactivation phenomena in reaction via carbon deposition.
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