Midong Shi, Zichun Chen, Wenhua Mao, Bin Deng, Hongbo He, Yan Duan, Wei Zeng, Lu Liu, Fangfang Dai
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引用次数: 0
Abstract
The aim of this work was to explore the influence of temperature on the structural composition and catalytic activity of ZrO2–SnO2 catalysts for direct conversion of CO2 to dimethyl carbonate (DMC). ZrO2–SnO2 were prepared via a template-precipitation method and characterized by SEM, XRD, Raman spectroscopy, XPS, NH3/CO2-TPD, and N2 adsorption/desorption isotherms. The results showed that the calcination and hydrothermal temperature had opposite effects on the acid-base site and oxygen vacancy number of catalysts, and also have different effects on the crystal and pore structure. That confirmed that temperature had a significant impact on the studied catalysts. Furthermore, the effects of reaction conditions on the yield of DMC were investigated. The optimum reaction conditions were the catalyst amount of 0.8 g, temperature of 150°C, and time of 20 h, and the corresponding DMC yield was 1.85 mmol/(g catalyst). Thus, this work validated the temperature control strategy of catalyst preparation.
期刊介绍：
Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world.
Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.
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