高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (11): 1877.

• 研究论文 • 上一篇    下一篇

硬脂酸法制备SO42-/Fe2O3-SiO2固体酸及其催化性能的初步探讨

吴东辉, 李丹, 杨娟, 杨绪杰, 陆路德, 汪信   

  1. 南京理工大学材料化学研究室, 南京 210094
  • 收稿日期:2000-10-12 出版日期:2001-11-24 发布日期:2001-11-24
  • 通讯作者: 汪信(1948年出生),男,教授,博士生导师,从事纳米材料制备及应用研究.E-mail:WXin@public1.ptt.js.cn E-mail:WXin@public1.ptt.js.cn
  • 基金资助:

    江苏省自然科学基金(BK99072);中国博士后科学基金资助

Preparation of Solid Acid SO42-/Fe2O3-SiO2 by Stearic Acid Method and Preliminary Study on Its Catalytic Activity

WU Dong-Hui, LI Dan, YANG Juan, YANG Xu-Jie, LU Lu-De, WANG Xin   

  1. Materials Chemistry Laboratory, Nanjing University of Science Technology, Nanjing 210094, China
  • Received:2000-10-12 Online:2001-11-24 Published:2001-11-24

摘要: 首次用硬脂酸法制备了Fe2O3-SiO2混合氧化物,经浸渍H2SO4后再焙烧得SO42-/Fe2O3-SiO2固体酸催化剂.用TEM,XRD,N2吸附/脱附和TG-DTA等手段对其进行了表征,结果显示制得的Fe2O3-SiO2混合氧化物具有多孔结构,且随着Si含量的增大,其比表面积明显增大,但孔径减小.用乙酸/丁醇酯化催化反应评估了该固体酸的催化性能.

关键词: 固体酸, Fe2O3-SiO2混合氧化物, 硬脂酸, 酯化反应

Abstract: Fe2O3 SiO2 mixed oxides were prepared by stearic acid method for the first time. After being impregnated by H2SO4 solution and calcined at a certain temperature, the mixed oxides formed a solid acid. The samples were characterized by XRD,TEM, N2 adsorption/desorption and TG-DTAmethods. The results showed that with the increasing of SiO2 content the specific surface areas of Fe2O3 SiO2 mixed oxides increased significantly, but the porous sizes decreased. The catalytic activities of the solid acid catalysts were evaluated by esterification of acetic acid and butanol.

Key words: Solid acid, Fe2O3 SiO2 mixed oxide, Stearic acid, Esterification

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