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Liquid‐phase α ‐Pinene Isomerization over Fe‐doped Sulfated Zirconia Prepared by a Hydrothermal Treatment‐assisted Process
Author(s) -
Liu Jianfeng,
Zhao Jie,
Miao Changxi,
Yue Yinghong,
Hua Weiming,
Gao Zi
Publication year - 2011
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201190206
Subject(s) - cubic zirconia , isomerization , chemistry , hydrothermal circulation , catalysis , scanning electron microscope , desorption , doping , ammonia , chemical engineering , phase (matter) , sulfation , transmission electron microscopy , nuclear chemistry , inorganic chemistry , adsorption , organic chemistry , materials science , ceramic , biochemistry , optoelectronics , engineering , composite material
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 thermogravi‐ metric 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 α ‐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.