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Citation: LUO Shi-Ping, CHEN Yong, HAN Guo-Fang, QIU Zhao-Rong, YANG Xu-Jie, LU Lu-De. Perfluorosulfonic Acid Resin/Silica Composite Catalyst for the Synthesis of Dioctyl Phthalate[J]. Chinese Journal of Applied Chemistry, ;2006, 23(4): 390-393. shu

Perfluorosulfonic Acid Resin/Silica Composite Catalyst for the Synthesis of Dioctyl Phthalate

1.
a School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094;
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b Jiangsu Provincial Key Laboratory of Fine Chemical Engineering, Jiangsu Polytechnic University, Changchou 213016

Corresponding author: LUO Shi-Ping,
Received Date: 16 June 2005
Available Online: 12 August 2005
Fund Project: 江苏省教育厅资助项目(KJS02113) (KJS02113)

The used perfluorosulfonic acid ion-exchange membrane was treated in a solvent to recycle the perfluorosulfonic acid resin.The perfluorosulfonic acid resin/silica composite catalysts were prepared by the sol-gel method and the impregnation method,respectively,and characterized by FTIR,TG,BET,and SEM.For co MParison,catalysts such as an impregnated perfluorosulfonic acid resin/SiO₂,Nafion SAC-13,SO₄^2-/TiO₂ solid acid and p-toluenesulfonic acid were also studied.The composite catalysts obtained were used in the esterification of phthalic anhydride with 2-ethyl hexanol.The results show that under the conditions of n(phthalic anhydride):n(2-ethyl hexanol)=1:3,4.4%(mass fraction) catalyst,170℃ and 4 h, dioctyl phthalate could be obtained in a yield of 97.06%.
- solid acid,
- perfluorosulfonic acid ion-exchange membrane,
- perfluorosulfonic acid resin/silica composite catalyst,
- dioctyl phthalate
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