Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases p. 1681 - 1686 (1986)
Update date:2022-08-29
Topics:
Inoue, Takashi
Iizuka, Tokio
The production of methanol from reactions between CO2 + H2 and CO + H2 has been studied over platinum catalysts supported on Nb2O5, ZrO2, MgO, SiO2 and TiO2.Zirconia- and niobia-supported Pt catalysts showed the highest activity for reactions of both CO2 and CO.The magnesia-supported Pt catalyst was less active compared with Pt/ZrO2 and Pt/Nb2O5, but exhibited the highest selectivity towards MeOH formation.The activation energy of the CO2 + H2 reaction was always lower than that of the CO reaction.Thus, the reaction of CO2 + H2 occurs easily at lower temperature compared with the CO + H2 reaction, but the rate of CO hydrogenation exceeds that of CO2 hydrogenation at higher temperatures.The selectivity towards methanol was higher fot CO2 hydrogenation than that for the CO + H2 reaction over all the catalysts used.
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