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乳液催化剂存在下空气辅助甲酸氧化法使油品脱硫(英文)
作者姓名:Ahmad Imtiaz  Ahmad Waqas  Ishaq Muhammad
作者单位:Institute of Chemical Sciences, University of Peshawar, 25120, Khyber Pukhtunkhwa, Pakistan
基金项目:Financial support from the Higher Education Commission(HEC) Pakistan,under the International Research Support Initiative Program(IRSIP)
摘    要:Catalytic oxidative desulfurization(ODS) of model oil and commercial oil samples was investigated using an air-assisted performic acid oxidation system with a phase transfer or emulsion catalyst comprising a quaternary ammonium salt-based heteropolyoxometalate.Different emulsion catalysts with a Keggin type heteroployoxometalate anion(containing W,Mo,and V) and cetyltrimethylammonium bromide cation were prepared and characterized by X-ray fluorescence,Fourier transform infrared spectroscopy,and scanning electron microscopy.C16H33N(CH3)3]3PW9Mo3O40] was the most effective catalyst in the current oxidation system,which reduced the sulfur content of the model oil from 1275 μg/g to 57 μg/g.The reactivity order of different model sulfur compounds was thiophene < dibenzothiophene < 4,6-dimethyldibenzothiophene. The ODS of model sulfur compounds followed first order kinetics with apparent activation energy from 29 to 27 kJ/mol.The catalysts also performed efficiently in the ODS of the industrial oil samples,including untreated naphtha,light gas oil,heavy gas oil,and Athabasca oil sands derived bitumen,for which sulfur removal rates were 83%,85%,68% and 64%,respectively.

关 键 词:Catalytic  oxidative  desulfurization  Performic  acid  oxidation  Emulsion  catalyst  Heteropolyoxometalate  Air  oxidation
收稿时间:2013-06-10

Desulfurization of liquid fuels using air-assisted performic acid oxidation and emulsion catalyst
Ahmad Imtiaz,Ahmad Waqas,Ishaq Muhammad.Desulfurization of liquid fuels using air-assisted performic acid oxidation and emulsion catalyst[J].Chinese Journal of Catalysis,2013,34(10):1839-1847.
Authors:Ahmad Imtiaz  Ahmad Waqas  Ishaq Muhammad
Institution:Institute of Chemical Sciences, University of Peshawar, 25120, Khyber Pukhtunkhwa, Pakistan
Abstract:Catalytic oxidative desulfurization (ODS) of model oil and commercial oil samples was investigated using an air-assisted performic acid oxidation system with a phase transfer or emulsion catalyst comprising a quaternary ammonium salt-based heteropolyoxometalate. Different emulsion catalysts with a Keggin type heteroployoxometalate anion (containing W, Mo, and V) and cetyltrimethylammonium bromide cation were prepared and characterized by X-ray fluorescence, Fourier transform infrared spectroscopy, and scanning electron microscopy. C16H33N(CH3)3]3PW9Mo3O40] was the most effective catalyst in the current oxidation system, which reduced the sulfur content of the model oil from 1275 μg/g to 57 μg/g. The reactivity order of different model sulfur compounds was thiophene < dibenzothiophene < 4,6-dimethyldibenzothiophene. The ODS of model sulfur compounds followed first order kinetics with apparent activation energy from 29 to 27 kJ/mol. The catalysts also performed efficiently in the ODS of the industrial oil samples, including untreated naphtha, light gas oil, heavy gas oil, and Athabasca oil sands derived bitumen, for which sulfur removal rates were 83%, 85%, 68% and 64%, respectively.
Keywords:Catalytic oxidative desulfurization  Performic acid oxidation  Emulsion catalyst  Heteropolyoxometalate  Air oxidation
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