Comparative Study of Physicochemical Characteristics and Catalytic Activity of Copper Oxide over Synthetic Silicon Oxide and Silicon Oxide from Rice Husk in Non-Oxidative Dehydrogenation of Ethanol

Manshuk Mambetova, Gaukhar Yergaziyeva, Kusman Dossumov, Kydyr Askaruly, Сейтхан Азат, Kalampyr Bexeitova, Moldir Anissova, Bedelzhan B. Baizhomartov

ChemEngineering, 2022

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DOI 10.3390/chemengineering6050074

Data confidence 85 high

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Abstract

The article presents the results of comparative research on the physicochemical characteristics and catalytic activity of copper oxide supported on synthetic SiO2 and SiO2 (RH) from rice husk. SiO2 (RH) is more hydrophobic compared to SiO2, which leads to the concentration of copper oxide on its surface in the form of a “crust”, which is very important in the synthesis of low-percentage catalysts. According to SEM, XRD, and TPR-H2, the use of SiO2 (RH) as a carrier leads to an increase in the dispersion of copper oxide particles, which is the active center of ethanol dehydrogenation.