Silica-gel Supported V Complexes：Preparation, Characterization and Catalytic Oxidative Desulfurization

doi:10.1016/S1004-9541(13)60558-3

Chinese Journal of Chemical Engineering ›› 2013, Vol. 21 ›› Issue (8): 860-866.DOI: 10.1016/S1004-9541(13)60558-3

• 催化、动力学与反应工程 • 上一篇下一篇

Silica-gel Supported V Complexes：Preparation, Characterization and Catalytic Oxidative Desulfurization

黎俊波¹, 刘习文^1,2, 曹灿灿¹, 郭嘉¹, 潘志权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

收稿日期:2012-01-09 修回日期:2012-05-13 出版日期:2013-08-28 发布日期:2013-08-24
通讯作者: PAN Zhiquan
基金资助:
Supported by the National Natural Science Foundation of China (20901063) and the Natural Science Foundation of Hubei Province (2011CDB221).

Silica-gel Supported V Complexes：Preparation, Characterization and Catalytic Oxidative Desulfurization

LI Junbo¹, LIU Xiwen^1,2, CAO Cancan¹, GUO Jia¹, PAN Zhiquan¹

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

Received:2012-01-09 Revised:2012-05-13 Online:2013-08-28 Published:2013-08-24
Supported by:
Supported by the National Natural Science Foundation of China (20901063) and the Natural Science Foundation of Hubei Province (2011CDB221).

摘要/Abstract

摘要： In this manuscript, a series of catalyst SG_n-[V^VO₂-PAMAM-MSA] (SG silica gel, PAMAM polyamidoamine, MSA 5-methyl salicylaldehyde, n 0, 1, 2, 3) was prepared and their structures were fully characterized by Fourier transform-infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS) and inductive coupled plasma emission spectrometer (ICP) etc. XPS revealed that the metal V and SG_n-PAMAM-MSA combined more closely after the formation of Schiff base derivatives. Their catalytic activities for oxidation of dibenzothiophene were evaluated using tert-butyl hydroperoxide as oxidant. The results showed that the catalyst SG_2.0-[V^VO₂-PAMAM-MSA] presented good catalytic activity and recycling time. Meanwhile, the optimal condition for the catalytic oxidation of SG_2.0-[V^VO₂-PAMAM-MSA] was also investigated, which showed that when the oxidation temperature was 90℃, time was 60 min, the O/S was 3:1, and the mass content of catalyst was 1%, the rate of desulfurization could reach 85.2%. Moreover, the catalyst can be recycled several times without significant decline in catalytic activity.

关键词: oxidative desulfurization, silica gel supported complex, V complex, tert-butyl hydroperoxide

Abstract: In this manuscript, a series of catalyst SG_n-[V^VO₂-PAMAM-MSA] (SG silica gel, PAMAM polyamidoamine, MSA 5-methyl salicylaldehyde, n 0, 1, 2, 3) was prepared and their structures were fully characterized by Fourier transform-infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS) and inductive coupled plasma emission spectrometer (ICP) etc. XPS revealed that the metal V and SG_n-PAMAM-MSA combined more closely after the formation of Schiff base derivatives. Their catalytic activities for oxidation of dibenzothiophene were evaluated using tert-butyl hydroperoxide as oxidant. The results showed that the catalyst SG_2.0-[V^VO₂-PAMAM-MSA] presented good catalytic activity and recycling time. Meanwhile, the optimal condition for the catalytic oxidation of SG_2.0-[V^VO₂-PAMAM-MSA] was also investigated, which showed that when the oxidation temperature was 90℃, time was 60 min, the O/S was 3:1, and the mass content of catalyst was 1%, the rate of desulfurization could reach 85.2%. Moreover, the catalyst can be recycled several times without significant decline in catalytic activity.

Key words: oxidative desulfurization, silica gel supported complex, V complex, tert-butyl hydroperoxide

黎俊波, 刘习文, 曹灿灿, 郭嘉, 潘志权. Silica-gel Supported V Complexes：Preparation, Characterization and Catalytic Oxidative Desulfurization[J]. Chinese Journal of Chemical Engineering, 2013, 21(8): 860-866.

LI Junbo, LIU Xiwen, CAO Cancan, GUO Jia, PAN Zhiquan. Silica-gel Supported V Complexes：Preparation, Characterization and Catalytic Oxidative Desulfurization[J]. Chin.J.Chem.Eng., 2013, 21(8): 860-866.

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Silica-gel Supported V Complexes：Preparation, Characterization and Catalytic Oxidative Desulfurization

Silica-gel Supported V Complexes：Preparation, Characterization and Catalytic Oxidative Desulfurization

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