Effect of H2S on carbon-catalyzed methane decomposition and CO2 reforming reactions

    Authors

    B. Fidalgo; N. Muradov;J. A. Menendez

    Comments

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    Abbreviated Journal Title

    Int. J. Hydrog. Energy

    Keywords

    Methane decomposition; Dry reforming; Carbon catalyst; Hydrogen sulfide; HYDROGEN-PRODUCTION; SYNTHESIS GAS; SUPPORTED CATALYSTS; NICKEL-CATALYSTS; ACTIVATED CARBON; DIOXIDE; DECARBONIZATION; DEACTIVATION; CONVERSION; EMISSION; Chemistry, Physical; Electrochemistry; Energy & Fuels

    Abstract

    The effect of H2S on catalytic processing of methane is of a great practical importance. In this work, the effect of small quantities (0.5-1.0 vol.%) of H2S present in the feedstock on the methane decomposition and CO2 reforming reactions over carbon and metal based catalysts was investigated. Activated carbon (FY5), an in-house prepared alumina-supported Ni catalyst (NiA) and the mixture of both (FY5 + NiA) were used as catalysts in this study. It was found that CH4 and CO2 conversions were noticeably increased when H2S was added to the reacting mixture, which points to (i) the tolerance of carbon catalyst to H2S and (ii) the catalytic effect of H2S on carbon-catalyzed decomposition and dry reforming of methane. In contrast, NiA catalyst and the mixture FY5 + NIA were deactivated in the presence of H2S in both reactions. The effect of the heating system (i.e., conventional electric resistance vs microwave heating) on the products Yield of the dry reforming reaction in the presence of H2S is also discussed in this paper. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

    Journal Title

    International Journal of Hydrogen Energy

    Volume

    37

    Issue/Number

    19

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    14187

    Last Page

    14194

    WOS Identifier

    WOS:000309493600030

    ISSN

    0360-3199

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