Co-processing CH4 and oxygenates on Mo/H-ZSM-5: 2. CH 4-CO2 and CH4-HCOOH mixtures

Jeremy Bedard, Do Young Hong, Aditya Bhan

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18 Scopus citations

Abstract

Co-processing of formic acid or carbon dioxide with CH4 (FA/CH4 = 0.01-0.03 and CO2/CH4 = 0.01-0.03) on Mo/H-ZSM-5 catalysts at 950 K with the prospect of kinetically coupling dehydrogenation and deoxygenation cycles results instead in a two-zone, staged bed reactor configuration consisting of upstream oxygenate/CH4 reforming and downstream CH4 dehydroaromatization. The addition of an oxygenate co-feed (oxygenate/CH4 = 0.01-0.03) causes oxidation of the active molybdenum carbide catalyst while producing CO and H2 until completely converted. Forward rates of C6H6 synthesis are unaffected by the introduction of an oxygenate co-feed after rigorously accounting for the thermodynamic reversibility caused by the H 2 produced in oxygenate reforming reactions and the fraction of the active catalyst deemed unavailable for CH4 DHA. All effects of co-processing oxygenates with CH4 can be construed in terms of an approach to equilibrium.

Original languageEnglish (US)
Pages (from-to)12173-12179
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume15
Issue number29
DOIs
StatePublished - Aug 7 2013

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