The properties of the new solid supper acid catlyst which was immerged by S2O82-and added with Sm2O3 were Studied.And the effect of acid strength,sulfur content and stability on the catalyst S2O82-/ZrO2-SiO2-Sm2O2 cau...The properties of the new solid supper acid catlyst which was immerged by S2O82-and added with Sm2O3 were Studied.And the effect of acid strength,sulfur content and stability on the catalyst S2O82-/ZrO2-SiO2-Sm2O2 caused by the dinnovation was studied.展开更多
The synthesis of n-octyl bromide with hydrobromic acid and n-octyl alcohol as reactants and rare earth solid super acid S2O82-/ZrO2-SiO2-Sm2O3as catalyst is studied.The results show that the optimum conditions should...The synthesis of n-octyl bromide with hydrobromic acid and n-octyl alcohol as reactants and rare earth solid super acid S2O82-/ZrO2-SiO2-Sm2O3as catalyst is studied.The results show that the optimum conditions should be∶n(hydrobromic acid)∶n(n-octyl alcohol)=4.2∶1.0,the amount of the catalyst is 1.5% of the total weight of the reactants used in the reaction,the reaction time is 5.0h and the temperature is 130～140℃.The yield of n-octyl bromide is about 66.8%.The catalyst can be reused after being activated and the yield of n-octyl bromide is reduced to 64.3% after being used 6 times.The structure of the product is identified by methods of IR and 1H-NMR.The effective factors of the preparation conditions to the catalyst activity are also investigated by the esterification of actic acid with butanol.The catalyst is characterized by XRD and FI-IR.展开更多
文摘The properties of the new solid supper acid catlyst which was immerged by S2O82-and added with Sm2O3 were Studied.And the effect of acid strength,sulfur content and stability on the catalyst S2O82-/ZrO2-SiO2-Sm2O2 caused by the dinnovation was studied.
文摘The synthesis of n-octyl bromide with hydrobromic acid and n-octyl alcohol as reactants and rare earth solid super acid S2O82-/ZrO2-SiO2-Sm2O3as catalyst is studied.The results show that the optimum conditions should be∶n(hydrobromic acid)∶n(n-octyl alcohol)=4.2∶1.0,the amount of the catalyst is 1.5% of the total weight of the reactants used in the reaction,the reaction time is 5.0h and the temperature is 130～140℃.The yield of n-octyl bromide is about 66.8%.The catalyst can be reused after being activated and the yield of n-octyl bromide is reduced to 64.3% after being used 6 times.The structure of the product is identified by methods of IR and 1H-NMR.The effective factors of the preparation conditions to the catalyst activity are also investigated by the esterification of actic acid with butanol.The catalyst is characterized by XRD and FI-IR.
