Comparison Studies on the Catalysis Process of Methanol Synthesis from CO2+H2 and (CO/CO2) +H2

Abstract

Abstract: The catalytic processes of methanol synthesis from CO²+H₂, CO+H₂ and (CO/CO₂) +H₂ have been studied.The results indicate that methanol is primarily formed fromCO₂ hydrogenation for both CO²⁺H₂ and (CO/CO₂) +H₂. Due to the limitation of thermaldynamics, the yield of methanol is low for CO₂ hydrogenation.In the process of (CO/CO₂)+H₂, methanol selectivity and formation rate are promoted greatly due to the recycle processof methanol synthesis from CO²⁺H₂ and reverse water-gas shift reaction.As a result, thelimitation of thermodynamic equilibrium of methanol synthesis from CO₂, hydrogenation ismoved to the favorable side of methanol synthesis.Anovel reaction mechanism is proposed.

Key words: Cu/ZnO/Al₂O₃ catalyst, Methanol synthesis, CO₂/CO hydrogenation, Reaction mechanism

CLC Number:

O643.11

TrendMD:

SUN Qi, ZHANG Yu-Long, MA Yan, DENG Jing-Fa. Comparison Studies on the Catalysis Process of Methanol Synthesis from CO₂+H₂ and (CO/CO₂) +H₂[J]. Chem. J. Chinese Universities, 1997, 18(7): 1131.

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Comparison Studies on the Catalysis Process of Methanol Synthesis from CO₂+H₂ and (CO/CO₂) +H₂

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