Title: Methanol dehydrogenation over Cu/SiO2 catalysts

Authors: Aleksey Vedyagin; Yulia Kotolevich; Pavel Tsyrul'nikov; Evgeny Khramov; Aleksander Nizovskii

Addresses: Boreskov Institute of Catalysis, Siberian Branch Russian Academy of Sciences, Lavrentieva av., 5, Novosibirsk 630090, Russia ' Institute of Hydrocarbon Processing, Siberian Branch of Russian Academy of Sciences, Neftezavodskaya st., 54, Omsk 644040, Russia ' Institute of Hydrocarbon Processing, Siberian Branch of Russian Academy of Sciences, Neftezavodskaya st., 54, Omsk 644040, Russia ' Kurchatov Institute, pl. Kurchatova, 1, Moscow 123098, Russia ' Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Lavrentieva av., 5, Novosibirsk 630090, Russia; Omsk State Technical University, Mira av. 11, Omsk 644050, Russia

Abstract: Methanol dehydrogenation was carried out over impregnated Cu/SiO2 catalysts. It was found that the temperature of the catalyst's preliminary reduction by hydrogen could play a dramatic role. The interaction of copper ions with silica during the reduction at ≥300°C was observed. Metallic copper species obtained at low reduction temperature were found to be responsible for the methyl formate formation. The catalysts containing copper in the oxidised state showed low selectivity because of a side reaction of coke formation and were deactivated rapidly. The optimal temperature of reduction was found to be 250°C.

Keywords: methanol dehydrogenation; methyl formate; selectivity; silica support; SiO2; coke formation; reduction temperature; copper particles; catalytic activity; wet impregnation.

DOI: 10.1504/IJNT.2016.074533

International Journal of Nanotechnology, 2016 Vol.13 No.1/2/3, pp.185 - 199

Available online: 04 Feb 2016 *

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