固体超强酸S2O8^2-/ZrO2-SiO2-Sm2O3催化合成溴代正辛烷的研究  

Study on synthesis of n-octyl bromide catalyzed by solid superacids S_2O_8^(2-)/ZrO_2-SiO_2-Sm_2O_3

作　　者：乌云[1,2] 崔秀兰[1] 郭俊文[1] 

机构地区：[1]内蒙古工业大学化工学院,内蒙古呼和浩特010051 [2]内蒙古化工职业学院,内蒙古呼和浩特010010

出　　处：《化学研究与应用》2008年第11期1464-1467,共4页Chemical Research and Application

基　　金：内蒙古自治区自然科学基金项目(200109-13)资助

摘　　要：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.The synthesis of n-octyl bromide with hydrobromic acid and n-octyl alcohol as reactants and rare earth solid super acid S2O8^2-/ZrO2-SiO2-Sm2O3 as 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. Oh 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.

关 键 词：固体超强酸 催化 溴代正辛烷 表征 

分 类 号：TQ039.2[化学工程]