Water‐Enhanced Synthesis of Higher Alcohols from CO2 Hydrogenation over a Pt/Co3O4 Catalyst under Milder Conditions |
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Authors: | Dr. Zhenhong He Dr. Qingli Qian Dr. Jun Ma Dr. Qinglei Meng Dr. Huacong Zhou Dr. Jinliang Song Prof. Dr. Zhimin Liu Prof. Dr. Buxing Han |
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Affiliation: | Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China) |
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Abstract: | The effect of water on CO2 hydrogenation to produce higher alcohols (C2–C4) was studied. Pt/Co3O4, which had not been used previously for this reaction, was applied as the heterogeneous catalyst. It was found that water and the catalyst had an excellent synergistic effect for promoting the reaction. High selectivity of C2–C4 alcohols could be achieved at 140 °C (especially with DMI (1,3‐dimethyl‐2‐imidazolidinone) as co‐solvent), which is a much lower temperature than reported previously. The catalyst could be reused at least five times without reducing the activity and selectivity. D2O and 13CH3OH labeling experiments indicated that water involved in the reaction and promoted the reaction kinetically, and ethanol was formed via CH3OH as an intermediate. |
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Keywords: | CO2 hydrogenation heterogeneous catalysis higher alcohols Pt/CO3O4 water |
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