CO 2 hydrogenation to methanol over CuO–ZnO–TiO2–ZrO2: a comparison of catalysts prepared by sol–gel, solid-state reaction and solution-combustion

CO 2 hydrogenation to methanol over CuO–ZnO–TiO2–ZrO2: a comparison of catalysts prepared... Three CuO–ZnO–TiO2–ZrO2 catalysts with the same composition were prepared through sol–gel, solid-state reaction, and solution-combustion methods and characterized by X-ray diffraction (XRD), N2 adsorption, X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction with H2 (H2-TPR), reactive N2O adsorption, and adsorption of H2 and CO2 followed by temperature-programmed desorption (H2-TPD, CO2-TPD) techniques. Their catalytic performances for CO2 hydrogenation to methanol were tested in a fixed-bed reactor under the conditions of 200–280 °C, 3 MPa, and SV = 2400 mL gcat −1 h−1. The results indicated that the texture, structure, reducibility, and adsorption capacity for reactants of the CuO–ZnO–TiO2–ZrO2 catalyst were affected noticeably by preparation methods and the catalyst prepared by sol–gel method exhibited the highest CO2 conversion and methanol selectivity, which reached to 17.0% and 44.0%, respectively. The highest activity of the CuO–ZnO–TiO2–ZrO2 catalyst prepared by sol–gel method was attributed to the largest metallic Cu surface area and adsorption capacity for H2. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Sol-Gel Science and Technology Springer Journals

CO 2 hydrogenation to methanol over CuO–ZnO–TiO2–ZrO2: a comparison of catalysts prepared by sol–gel, solid-state reaction and solution-combustion

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Publisher
Springer US
Copyright
Copyright © 2018 by Springer Science+Business Media, LLC, part of Springer Nature
Subject
Materials Science; Ceramics, Glass, Composites, Natural Materials; Inorganic Chemistry; Optical and Electronic Materials; Nanotechnology
ISSN
0928-0707
eISSN
1573-4846
D.O.I.
10.1007/s10971-018-4680-4
Publisher site
See Article on Publisher Site

Abstract

Three CuO–ZnO–TiO2–ZrO2 catalysts with the same composition were prepared through sol–gel, solid-state reaction, and solution-combustion methods and characterized by X-ray diffraction (XRD), N2 adsorption, X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction with H2 (H2-TPR), reactive N2O adsorption, and adsorption of H2 and CO2 followed by temperature-programmed desorption (H2-TPD, CO2-TPD) techniques. Their catalytic performances for CO2 hydrogenation to methanol were tested in a fixed-bed reactor under the conditions of 200–280 °C, 3 MPa, and SV = 2400 mL gcat −1 h−1. The results indicated that the texture, structure, reducibility, and adsorption capacity for reactants of the CuO–ZnO–TiO2–ZrO2 catalyst were affected noticeably by preparation methods and the catalyst prepared by sol–gel method exhibited the highest CO2 conversion and methanol selectivity, which reached to 17.0% and 44.0%, respectively. The highest activity of the CuO–ZnO–TiO2–ZrO2 catalyst prepared by sol–gel method was attributed to the largest metallic Cu surface area and adsorption capacity for H2.

Journal

Journal of Sol-Gel Science and TechnologySpringer Journals

Published: May 24, 2018

References

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