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4268564 
Journal Article 
Liquid-phase alpha-Pinene Isomerization over Fe-doped Sulfated Zirconia Prepared by a Hydrothermal Treatment-assisted Process 
Liu Jianfeng; Zhao Jie; Miao Changxi; Yue Yinghong; Hua Weiming; Gao Zi 
2011 
Yes 
Chinese Journal of Chemistry
ISSN: 1001-604X 
29 
6 
1095-1100 
WOS:000292215300003 
A series of Fe-doped (0.5%-3%) sulfated zirconia have been prepared by a hydrothermal treatment-assisted process. Textural and structural characterizations of the as-synthesized materials were performed by means of N(2) adsorption, X-ray diffraction, transmission electron microscopy, scanning electron microscopy and thermogravimetric analysis. Temperature-programmed desorption of ammonia was used to determine the acidity of the samples. The effects of Fe-doping on the structure, acidity and catalytic activity of sulfated zirconia for liquid-phase a-pinene isomerization were investigated. The incorporation of small amounts of Fe into sulfated zirconia results in the increase of sulfate content and the number of acid sites, which is responsible for the enhanced activity of Fe-doped catalysts in comparison with the undoped one. Meanwhile, hydrothermal treatment helps to improve the activity of the catalyst. 
sulfated zirconia; Fe-doping; hydrothermal treatment; promoting effect; acidity; isomerization