Catalytic Synthesis of Polytetrahydrofuran by Phosphotungstic Heteropoly Acid Supported on Mesoporous Silica
Luo Shi-zhong
Abstract
Luo Shi-zhong
Abstract
The catalysts of phosphotungstic heteropoly acid(PW12) supported on silica(SiO2),PW12/SiO2,were prepared by impregnation method.The effect of PW12 loading amount[w(PW12)]and calcinated temperature on the catalytic activity of PW12/SiO2 were investigated.The results showed that the optimal catalyst(35Cat) was prepared under the conditions with w(PW12) of 35.0% and calcination at 230 ℃ for 3 h;the yield of PTHF reached 60.2% using 35Cat as a catalyst when the 35Cat percent in reactants tatol mass was 15.0%.
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The catalysts of phosphotungstic heteropoly acid(PW12) supported on silica(SiO2),PW12/SiO2,were prepared by impregnation method.The effect of PW12 loading amount[w(PW12)]and calcinated temperature on the catalytic activity of PW12/SiO2 were investigated.The results showed that the optimal catalyst(35Cat) was prepared under the conditions with w(PW12) of 35.0% and calcination at 230 ℃ for 3 h;the yield of PTHF reached 60.2% using 35Cat as a catalyst when the 35Cat percent in reactants tatol mass was 15.0%.
Key concepts: Phosphotungstic acid, Catalysis, Chemistry, Calcination, Yield (engineering), Mesoporous material, Heteropoly acid, Mesoporous silica