SO_4^(2-)/ZrO_2-SiO_2固体超强酸制备工艺研究  

Research on the synthesis of SO_4^(2-)/ZrO_2-SiO_2 solid superacid

作　　者：徐凤华[1] 翟祝贺[1] 田孟超[1] 李爱梅[1] 赵亚楠[1] 

机构地区：[1]中原工学院,河南郑州450007

出　　处：《河南科技学院学报（自然科学版）》2017年第4期47-53,58,共8页Journal of Henan Institute of Science and Technology(Natural Science Edition)

摘　　要：采用浸渍法制备SO_4^(2-)/ZrO_2-SiO_2固体超强酸,并以廉价的1,4-丁二醇和工业废气在吸收过程中产生的溴化氢为原料,以合成的SO_4^(2-)/ZrO_2-SiO_2固体超强酸为催化剂合成用途广泛的1,4-二溴丁烷.采用正交试验研究了SO_4^(2-)/ZrO_2-SiO_2固体超强酸制备过程中的复配比、焙烧温度、焙烧时间、硫酸浓度等因素对其催化性能的影响,以1,4-二溴丁烷的收率为考核指标,确定了SO_4^(2-)/ZrO_2-SiO_2固体超强酸的最佳制备工艺.结果表明:当n(Zr)∶n(Si)为1∶4、陈化时间12 h、预焙烧温度200℃、焙烧温度550℃、焙烧时间3 h、H_2SO_4浓度1.00 mol/L、m(前驱体)∶V(H_2SO_4)=1∶10时制备的固体超强酸的催化性能最佳.In this article,SO4^2-/ZrO2-SiO2 solid superacid were synthesized by impregnation method,and the wildly used 1,4-dibromobutane was synthesized with the prepared solid superacidas catalystutilizing raw material of inexpensive 1,4-butyl glycol and industrial abandoned hydrogen bromide produced during absorption process. Orthogonal test was used to study the effects of compound ratio,calcination temperature,calcination time and sulfuric acid concentration on the catalytic performance of SO42-/ZrO2-SiO2 solid superacid.The results indicated that：When n （Zr）：n （Si） is l：4,aging time is 12 hour,pre-caleination temperature is 200℃,roasting temperature is 550℃, roasting time 3 hour, H2SO4 concentration is 1.00 mol/L,m （precursor） ：V （H2SO4） = 1 ： 10,the solid superacid prepared above performs the best in catalytic performance.

关 键 词：固体超强酸 SO4^2-/ZrO2-SiO2 1 4-丁二醇 1 4-二溴丁烷 

分 类 号：TQ426.6[化学工程]