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Catalysts 2015, 5(4), 1846-1861; doi:10.3390/catal5041846

Catalytic Hydrogenation of CO2 to Methanol: Study of Synergistic Effect on Adsorption Properties of CO2 and H2 in CuO/ZnO/ZrO2 System

State Key Laboratory of Fine Chemistry, School of Chemical Engineering, Dalian University of Technology, 116024 Liaoning, China
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Academic Editor: Keith Hohn
Received: 29 September 2015 / Revised: 29 October 2015 / Accepted: 30 October 2015 / Published: 6 November 2015
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Abstract

A series of CuO/ZnO/ZrO2 (CZZ) catalysts with different CuO/ZnO weight ratios have been synthesized by citrate method and tested in the catalytic hydrogenation of CO2 to methanol. Experimental results showed that the catalyst with the lowest CuO/ZnO weight ratio of 2/7 exhibited the best catalytic performance with a CO2 conversion of 32.9%, 45.8% methanol selectivity, and a process delivery of 193.9 gMeOH·kgcat1·h1. A synergetic effect is found by systematic temperature-programmed-desorption (TPD) studies. Comparing with single and di-component systems, the interaction via different components in a CZZ system provides additional active sites to adsorb more H2 and CO2 in the low temperature range, resulting in higher weight time yield (WTY) of methanol. View Full-Text
Keywords: methanol synthesis; CO2 conversion; synergetic effect; medium basic site; citrate method methanol synthesis; CO2 conversion; synergetic effect; medium basic site; citrate method
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Huang, C.; Chen, S.; Fei, X.; Liu, D.; Zhang, Y. Catalytic Hydrogenation of CO2 to Methanol: Study of Synergistic Effect on Adsorption Properties of CO2 and H2 in CuO/ZnO/ZrO2 System. Catalysts 2015, 5, 1846-1861.

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