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- W2392196092 abstract "Solid acid catalyst SO4(2-)/ZrO2 was prepared through a sol-gel-impregnation method and applied to the ring-opening addition reaction between epoxidized soybean oil(ESBO)and methanol.The influences of precipitation pH,concentration of H2SO4 maceration liquor and calcination temperature on catalytic performance of the catalyst were investigated.The structure and surface acidity of the catalyst were characterized by XRD,NH3-TPD and N2 adsorption.The results demonstrated that strong acidic site on catalyst surface was active center for the reaction,and the preparation conditions of the catalyst affected the formation of strong acidic site markedly.The catalyst obtained at pH 9,concentration of H2SO4 maceration 2 mol/L and 550 ℃ had higher catalytic activity than others.The conversion of epoxide group was greater than 98%,and the hydroxyl value could attain 203.7 mgKOH/g after reaction at 110 ℃ for 2 h.The product was easily separated with catalyst." @default.
- W2392196092 created "2016-06-24" @default.
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- W2392196092 date "2012-01-01" @default.
- W2392196092 modified "2023-09-23" @default.
- W2392196092 title "Synthesis of soybean oil polyols catalyzed by SO_4~(2-)/ZrO_2" @default.
- W2392196092 hasPublicationYear "2012" @default.
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