化学气相沉积法制备的硅化 Ti-SiO2 表征及其在豆油绿色环氧化中的催化性能

IF 0.6 4区化学 Q4 CHEMISTRY, APPLIED

Russian Journal of Applied Chemistry Pub Date : 2024-12-18 DOI:10.1134/S1070427224040013

Xuefeng Li, Like Zhang

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Characterization of Silylated Ti–SiO2 Prepared by Chemical Vapor Deposition and Its Catalytic Performance in Green Epoxidation of Soybean Oil

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Characterization of Silylated Ti–SiO2 Prepared by Chemical Vapor Deposition and Its Catalytic Performance in Green Epoxidation of Soybean Oil

Silylated Ti–SiO₂ (S–Ti–SiO₂) was prepared by the chemical vapor deposition of TiCl₄ and following hexamethyldisilazane (HMDS) on SiO₂. Its specific surface area and pore size are decreased compared with Ti-SiO₂ while it keeps highly dispersed Ti species with low coordination. More importantly, S–Ti–SiO₂ possesses higher hydrophobicity than Ti-SiO₂, which can explain the fact that it performs better than Ti-SiO₂ in catalytic epoxidation of soybean oil using 30% aqueous H₂O₂ as oxidant. The relative conversion to oxirane (RCO) of S–Ti–SiO₂ can reach 27% and the catalyst can be used 3 times under the best reaction conditions.

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来源期刊

Russian Journal of Applied Chemistry 化学-应用化学

CiteScore

1.60

自引率

11.10%

发文量

审稿时长

2-4 weeks

期刊介绍： Russian Journal of Applied Chemistry (Zhurnal prikladnoi khimii) was founded in 1928. It covers all application problems of modern chemistry, including the structure of inorganic and organic compounds, kinetics and mechanisms of chemical reactions, problems of chemical processes and apparatus, borderline problems of chemistry, and applied research.