制备条件对纳米级固体超强酸SO_4^(2-)/ZrO_2性能的影响  

The Influence of Preparation Conditions on the Performance of Nanometer Solid Superacid SO_4^(2-)/ZrO_2

作　　者：赵黔榕[1] 吴春华[2] 毕韵梅[1] 杜霞[1] 迟绍明[1] 

机构地区：[1]云南师范大学化学化工学院,昆明650092 [2]西南林学院木质科学与装饰工程学院,昆明650224

出　　处：《化学通报》2006年第9期661-667,共7页Chemistry

基　　金：云南省教育厅科研基金(5Y0091A);云南省自然科学基金(2002C0014Q)

摘　　要：通过溶剂替代法制备了纳米级固体超强酸SO42-/ZrO2催化剂,用XRD、TEM、TG-DTA、IR、XPS等技术考察了制备条件对样品的粒径、晶化温度与结构的影响,并研究了它们对松油醇乙酰化反应的催化性能。实验结果表明,0·5mol/LH2SO4浸渍、500~550℃焙烧3h的纳米SO42-/ZrO2具有最高超强酸性和催化活性。其酸强度为-16·02≤H0≤-14·52,粒径在20~40nm,松油醇转化率达99·8%。Nanometer solid superacid catalyst SO4^2-/ZrO2 has been prepared by solvent displacing method. The influence of preparation conditions on particle size, crystallizing temperature and crystal structure of the catalyst was investigated by means of XRD, TEM, TG-DTA, IR and XPS technology. The catalytic performance of the nanometer SO4^2-/ZrO2 was studied for terpineol acetylation reaction. The results indicate that nanometer SO4^2-/Zr02 has higher superacidity and catalytic activity after impregnated with 0.5mol/L sulfuric acid and calcined at 500 - 550℃ for 3h. Its acidity （H0） is in the range of - 16.02 to - 14.52 and particle size is about 20 - 40nm. The conversion of terpineol reaches 99.8 %.

关 键 词：溶剂替代法 氧化锆 固体超强酸 纳米粒子 松油醇乙酰化 

分 类 号：O643.36[理学—物理化学]