| H2SO4-SiO2固体酸的结构及酸性研究 |
| |
| 引用本文： | 辛秀兰,谢文华,王晶,付强,舒兴田,闵恩泽.H2SO4-SiO2固体酸的结构及酸性研究[J].分子催化,2004,18(2):98-103. |
| |
| 作者姓名： | 辛秀兰 谢文华 王晶 付强 舒兴田 闵恩泽 |
| |
| 作者单位： | 1. 北京工商大学,化工学院,北京,100037
2. 中国石油化工股份有限公司石油化工科学研究院,北京,100083 |
| |
| 基金项目： | 国家重点基础研究规划项目(课题编号:G2000048002). |
| |
| 摘 要： | 以溶胶-凝胶法制备了H2SO4-SiO2固体酸催化剂，并对其结构和酸性进行了系统表征．FT—IR和^29Si—NMR结果表明H2SO4和SiO2间存在相互作用，因此硫酸与硅胶形成稳定的固体、XRD、SEM和TEM结果表明，H2SO4-SiO2固体酸是一多孔无定型材料；BET法测定的H2SO4-SiO2固体酸的比表面积和孔体积结果表明，随着H2SO4与SiO2质量比增加，其比表面减少，孔体积增大；H2SO4-SiO2固体酸的酸强度和液体浓硫酸相当，酸强度与干燥温度和H2SO4加入量有关，固体酸的这一性质以^1H—MAS NMR进行了系统的表征．
|
| 关 键 词： | 固体酸 溶胶-凝胶 H2SO4-SiO2 ^1H—MAS NMR |
| 文章编号： | 1001-3555(2004)02-0098-06 |
Preparation and Characterization of H2SO4-SiO2 Solid Acid |
| |
| XIN Xiu-lan,XIE Wen-hua,WANG Jing,FU Qiang,SHU Xing-tian,MIN En-ze.Preparation and Characterization of H2SO4-SiO2 Solid Acid[J].Journal of Molecular Catalysis (China),2004,18(2):98-103. |
| |
| Authors: | XIN Xiu-lan XIE Wen-hua WANG Jing FU Qiang SHU Xing-tian MIN En-ze |
| |
| Institution: | XIN Xiu-lan~1,XIE Wen-hua~2,WANG Jing~2,FU Qiang~2,SHU Xing-tian~2,MIN En-ze~2 |
| |
| Abstract: | H_2SO_4-SiO_2 solid acid was synthesized by a sol-gel method. The structure, stability, acidity of as-prepared material were studied by SEM, XRD, BET, FT-IR, +(29)Si-MAS NMR and+(1)H-MAS NMR .The characterization results of FT-IR and NMR confirmed that H_2SO_4 is combined with the amorphous SiO_2. ((\)+(1)H-)MAS NMR investigations showed that it has high acidic strength. It was found that the acidity of the solid acid was enhanced by increasing of drying temperature and also influenced by acid ratio in the silica. |
| |
| Keywords: | H_2SO_4-SiO_2 Sol-gel method Solid acid +(1)H-MAS NMR |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《分子催化》浏览原始摘要信息 |
| 点击此处可从《分子催化》下载免费的PDF全文 |
|
