Microwave‐Assisted Hydrothermal Synthesis of CuO–ZnO–ZrO2 as Catalyst for Direct Synthesis of Methanol by Carbon Dioxide Hydrogenation. Issue 11 (26th July 2017)

• Record Type: Journal Article
• Authors: Huang, Chong; Mao, Dongsen; Guo, Xiaoming; Yu, Jun
• Is Part Of: Energy technology. Volume 5:Issue 11(2017:Nov.)
• Page Start: 2100
• Page End: 2107
• Publication Date: 2017-07-26
• Subjects: copper -- hydrogenation -- microwaves -- supported catalysts -- zinc; Energy development -- Periodicals; Power resources -- Periodicals; 333.79
• DOI: 10.1002/ente.201700190
• Languages: English
• ISSNs: 2194-4288

Abstract

Abstract: A series of CuO–ZnO–ZrO2 catalysts was prepared by a facile microwave‐assisted hydrothermal synthesis method and used for the direct synthesis of methanol by CO2 hydrogenation in a fixed‐bed reactor at 240 °C, 3.0 MPa, CO2 /H2 =1:3 ( v / v ), and space velocity of 2400 mL gcat −1 h −1 . The effects of the hydrothermal synthesis temperature (80–150 °C) on the physicochemical properties and catalytic activity of the CuO–ZnO–ZrO2 catalysts were investigated by using several techniques, including XRD, N2 adsorption, reactive N2 O adsorption, SEM with energy‐dispersive X‐ray spectroscopy, X‐ray photoelectron spectroscopy, temperature‐programmed reduction by H2, and the temperature‐programmed desorption of adsorbed CO2 and H2 . The catalyst prepared at 120 °C possessed a high surface area, a high dispersion of Cu species, a high adsorption capacity for CO2 and H2, and thus exhibited a high CO2 conversion and methanol selectivity. The surface area of metallic Cu ( S Cu ) is the critical factor in determining the activity of the CuO–ZnO–ZrO2 catalyst. Abstract : Microwave catalyst : The performance of a CuO–ZnO–ZrO2 catalyst prepared by microwave‐assisted hydrothermal synthesis is influenced greatly by the hydrothermal synthesis temperature. The catalyst prepared at 120 °C possesses a high surface area, high dispersion of Cu species, high adsorption capacity for CO2 and H2, and thus a high CO2 conversion and methanol selectivity.