Carbon-Supported KCoMoS2 for Alcohol Synthesis from Synthesis Gas
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2021-10-30
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Catalysts
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Multidisciplinary Digital Publishing Institute
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University of Cape Town
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Abstract
KCoMoS<sub>2</sub> was supported on various carbon support materials to study the support effect on synthesis gas conversion. Next to two activated carbons with high micropore volume, a traditional alumina (<i>γ</i>-Al<sub>2</sub>O<sub>3</sub>) support and its carbon coated form (CCA) were studied for comparison. Coating alumina with carbon increases the selectivity to alcohols, but the AC-supported catalysts show even higher alcohol selectivities and yields, especially at higher temperatures where the conversions over the AC-supported catalysts increase more than those over the <i>γ</i>-Al<sub>2</sub>O<sub>3</sub>-based catalysts. Increasing acidity leads to decreased CO conversion yield of alcohols. The two activated-carbon-supported catalysts give the highest yield of ethanol at the highest conversion studied, which seems to be due to increased KCoMoS<sub>2</sub> stacking and possibly to the presence of micropores and low amount of mesopores.
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Osman, M.E., Maximov, V.V., Dorokhov, V.S., Mukhin, V.M., Sheshko, T.F., Kooyman, P.J. & Kogan, V.M. 2021. Carbon-Supported KCoMoS2 for Alcohol Synthesis from Synthesis Gas. Catalysts. 11(11):1321. http://hdl.handle.net/11427/35394