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Received: 2005-11-16

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Journal of Zhejiang University SCIENCE B 2006 Vol.7 No.7 P.553-558


Preparation of SO42–/TiO2-La2O3 solid superacid and its catalytic activities in acetalation and ketalation

Author(s):  YANG Shui-jin, BAI Ai-min, SUN Ju-tang

Affiliation(s):  Department of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, China; more

Corresponding email(s):   yangshuijin@163.com

Key Words:  SO42&ndash, /TiO2-La2O3, Rare earth, Solid superacid, Catalysis

YANG Shui-jin, BAI Ai-min, SUN Ju-tang. Preparation of SO42–/TiO2-La2O3 solid superacid and its catalytic activities in acetalation and ketalation[J]. Journal of Zhejiang University Science B, 2006, 7(7): 553-558.

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author="YANG Shui-jin, BAI Ai-min, SUN Ju-tang",
journal="Journal of Zhejiang University Science B",
publisher="Zhejiang University Press & Springer",

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%T Preparation of SO42–/TiO2-La2O3 solid superacid and its catalytic activities in acetalation and ketalation
%A YANG Shui-jin
%A BAI Ai-min
%A SUN Ju-tang
%J Journal of Zhejiang University SCIENCE B
%V 7
%N 7
%P 553-558
%@ 1673-1581
%D 2006
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2006.B0553

T1 - Preparation of SO42–/TiO2-La2O3 solid superacid and its catalytic activities in acetalation and ketalation
A1 - YANG Shui-jin
A1 - BAI Ai-min
A1 - SUN Ju-tang
J0 - Journal of Zhejiang University Science B
VL - 7
IS - 7
SP - 553
EP - 558
%@ 1673-1581
Y1 - 2006
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2006.B0553

SO42&ndash;/TiO2-La2O3, a novel solid superacid, was prepared and its catalytic activities at different synthetic conditions are discussed with esterification of n-butanoic acid and n-butyl alcohol as probing reaction. The optimum conditions have also been found, mole ratio of n(La3+):n(Ti4+) is 1:34, the soaked consistency of H2SO4 is 0.8 mol/L, the soaked time of H2SO4 is 24 h, the calcining temperature is 480 °C, the calcining time is 3 h. Then it was applied in the catalytic synthesis of ten important ketals and acetals as catalyst and revealed high catalytic activity. Under these conditions on which the molar ratio of aldehyde/ketone to glycol is 1:1.5, the mass ratio of the catalyst used in the reactants is 0.5%, and the reaction time is 1.0 h, the yields of ketals and acetals can reach 41.4%~95.8%.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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