SCHEDULED MAINTENANCE
Highly selective conversion of CO2 to methanol on the CuZnO–ZrO2 solid solution with the assistance of plasma
a
Abstract
CuZnO–ZrO2–C was prepared by a co-precipitation method. For comparison, CuZnO–ZrO2–PC and CuZnO–ZrO2–CP were prepared by glow discharge plasma. The catalysts were characterized via the XRD, N2 adsorption–desorption, TEM, SEM, EDS, XPS, CO2-TPD and H2-TPR techniques. The catalysts were comparatively investigated for CO2 conversion and methanol selectivity in a fixed-bed reactor under the condition of 2 MPa, 250 °C, H2/CO2 = 3/1 and GHSV = 12 000 mL g−1 h−1. The results showed that the activities of the catalysts increased in the order of CuZnO–ZrO2–PC > CuZnO–ZrO2–CP > CuZnO–ZrO2–C. Moreover, the CO2 conversion of CuZnO–ZrO2–C increased by 38.9% via treatment with glow discharge plasma. The results are well explained based on the CO2-TPD and H2-TPR characterizations of the catalysts.
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