Preparation of Solid Acid SO42-/Fe2O3-SiO2 by Stearic Acid Method and Preliminary Study on Its Catalytic Activity

Abstract

Abstract: Fe₂O₃ SiO₂ mixed oxides were prepared by stearic acid method for the first time. After being impregnated by H₂SO₄ solution and calcined at a certain temperature, the mixed oxides formed a solid acid. The samples were characterized by XRD,TEM, N₂ adsorption/desorption and TG-DTAmethods. The results showed that with the increasing of SiO₂ content the specific surface areas of Fe₂O₃ SiO₂ mixed oxides increased significantly, but the porous sizes decreased. The catalytic activities of the solid acid catalysts were evaluated by esterification of acetic acid and butanol.

Key words: Solid acid, Fe₂O₃ SiO₂ mixed oxide, Stearic acid, Esterification

CLC Number:

O643.32

TrendMD:

WU Dong-Hui, LI Dan, YANG Juan, YANG Xu-Jie, LU Lu-De, WANG Xin . Preparation of Solid Acid SO₄^2-/Fe₂O₃-SiO₂ by Stearic Acid Method and Preliminary Study on Its Catalytic Activity[J]. Chem. J. Chinese Universities, 2001, 22(11): 1877.

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Preparation of Solid Acid SO₄^2-/Fe₂O₃-SiO₂ by Stearic Acid Method and Preliminary Study on Its Catalytic Activity

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