Study on Cu-Ni/ZrO2-SiO2 catalyst for direct synthesis of DMC from CO2 and CH3OH

S. Zhong*, H. Li, J. Wang, X. Xiao

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

17 引用 (Scopus)

摘要

The surface complex support ZrO2-SiO2 (ZrSiO) was prepared by surface reaction modification, and Cu-Ni/ZrSiO bimetallic catalyst was prepared by isovolumic impregnation. Absorption and reaction of CO2 with methanol on the catalyst were characterized by IR spectroscopy, TPD, temperature-programmed surface reaction, and microreactor techniques. The results showed that there exist three kinds of active sites on the catalyst: metal site M, Lewis acid site Zrn+, and Lewis basic site Zr-O-; CO2 horizontal adsorption state, formed from its shearing state on M with the cooperation of adjacent Zrn+, can be dissociated into M-CO and Zr-O- at ~ 142°C and methanol dissociated into Zr-OCH3 and Zr-OH with the cooperation of Zrn+ and adjacent Zr-O-; the main reaction products on the catalyst are dimethyl carbonate (DMC) with a selectivity of > 85%, and less amounts of CH2O, CO, and H2O.

源语言英语
页(从-至)117-120
页数4
期刊Chinese Journal of Catalysis
21
2
出版状态已出版 - 3月 2000
已对外发布

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Zhong, S., Li, H., Wang, J., & Xiao, X. (2000). Study on Cu-Ni/ZrO2-SiO2 catalyst for direct synthesis of DMC from CO2 and CH3OH. Chinese Journal of Catalysis, 21(2), 117-120.