CATEGORY: DESULFURIZATION
Chin.J.Chem.Eng. 2013, Vol. 21 Issue (8): 860-866
Silica-gel Supported V
ComplexesPreparation, Characterization and Catalytic Oxidative Desulfurization
LI Junbo (1), LIU Xiwen (1,2), CAO Cancan (1), GUO Jia (1), PAN
Zhiquan (1)
1 Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan
Institute of Technology, Wuhan 430073, China;
2 Zhejiang Engineering Design Co., Ltd., Juhua Group Corporation, Hangzhou
310002, China
Abstract
Researchers
prepared a series of catalyst SGn-[VVO2-PAMAM-MSA]
(SG silica gel, PAMAM polyamidoamine, MSA 5-methyl salicylaldehyde, n
0, 1, 2, 3) and characterized their structures by Fourier transform-infrared
spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray photoelectron
spectroscopy (XPS) and inductive coupled plasma emission spectrometer (ICP).
XPS revealed that the metal V and SGn-PAMAM-MSA combined
more closely after the formation of Schiff base derivatives.
They examined the catalytic activities for oxidation of
dibenzothiophene using tert-butyl
hydroperoxide as oxidant. Results revealed that the catalyst SG2.0-[VVO2-PAMAM-MSA]
presented good catalytic activity and recycling time. The catalyst can be
recycled several times without significant decline in catalytic activity.
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