Sol-gel derived H3PW12O40/SiO2 and catalyzed synthesis of trimethylolpropane tri-heptanoate

Abstract

Abstract: H₃PW₁₂O₄₀/SiO₂(PW/SiO₂) was prepared by the sol-gel method and trimethylolpropane tri-heptanoate(TMH ) was synthesized by trimethylolpropane(TMP) and heptylic acid(HA) in the presence of H₃PW₁₂O₄₀/SiO₂.The results showed that the catalyst with 50%（mass）PW had good activity and stability.The optimal esterification conditions were as follows:n_TMP∶n_HA=1∶4,2%(mass)PW/SiO₂,reaction temperature 120—200 ℃ and 3 h.The structure of TMH was characterized by GC,IR,¹HNMR spectra and the rate of esterification was up to 95%.

Key words: 溶胶-凝胶法, 磷钨酸, 酯化, 三羟甲基丙烷三庚酸酯

关键词: 溶胶-凝胶法, 磷钨酸, 酯化, 三羟甲基丙烷三庚酸酯

FANG Li, LI Haitang, ZHAO Yongxiang, LIU Diansheng. Sol-gel derived H₃PW₁₂O₄₀/SiO₂ and catalyzed synthesis of trimethylolpropane tri-heptanoate[J]. CIESC Journal, 2005, 56(2): 270-273.

方莉, 李海唐, 赵永祥, 刘滇生. 溶胶-凝胶法制备H₃PW₁₂O₄₀/SiO₂及催化合成三羟甲基丙烷三庚酸酯 [J]. 化工学报, 2005, 56(2): 270-273.

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Sol-gel derived H₃PW₁₂O₄₀/SiO₂ and catalyzed synthesis of trimethylolpropane tri-heptanoate

溶胶-凝胶法制备H₃PW₁₂O₄₀/SiO₂及催化合成三羟甲基丙烷三庚酸酯

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