Preparation of V(Ⅴ)Promoting SO2-4/ZrO2 Solid Superacid and Its Catalytic Activity

Chem. J. Chinese Universities

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Preparation of V(Ⅴ)Promoting SO^2-₄/ZrO₂ Solid Superacid and Its Catalytic Activity

ZHENG Ming-Dong¹, CHEN Tong-Yun^1*, HU Ke-Liang²

1. School of Chemistry & Chemical Engineering, Anhui University of Technology, Maanshan 243002, China;
2. Structure Research Center, University of Science and Technology of China, Hefei 230026, China

Received:2005-07-11 Revised:1900-01-01 Online:2006-06-10 Published:2006-06-10
Contact: CHEN Tong-Yun

Abstract

Abstract: The V(Ⅴ)-promoting SO^2-₄/ZrO₂ solid superacid samples were prepared by the method of ageing at a low temperature. The acidities of the samples were determined with flow indicator method, and the characterizations of the samples were performed by IR, XRD and XPS. The samples were used in the esterification of acetic acid and glycerol. The results show that the catalysts calcined at 600—650 ℃ and aged at a low temperature have a better performance comparing with other samples aged at ambient temperature, the flexible vibration peak of SO bond was strengthened remarkably in IR spectra, XRD patterns of aged samples at a low temperature and containing V(Ⅴ) additive indicate that metastable ZrO₂ cubic crystals formed which were baked at 600—650 ℃. The peak position of Zr_3d has a bigger chemical shift in XPS patterns.

Key words: Low-temperature ageing, Solid superacid, Preparation, Esterification, Triacetin

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ZHENG Ming-Dong¹, CHEN Tong-Yun^1*, HU Ke-Liang². Preparation of V(Ⅴ)Promoting SO^2-₄/ZrO₂ Solid Superacid and Its Catalytic Activity[J]. Chem. J. Chinese Universities, doi: .

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Preparation of V(Ⅴ)Promoting SO^2-₄/ZrO₂ Solid Superacid and Its Catalytic Activity

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