文献类型：会议论文

英文题名：Oxidative removal of dibenzothiophene by H2O2 over activated carbon-supported phosphotungstic acid catalysts

作者：Yu, Guo-Xian[1,2]; Zhou, Rui Xue[1]; Li, Ji-Bing[2]; Zhou, Xiao-Long[2]; Li, Cheng-Lie[2]; Chen, Li-Fang[3]; Wang, Jin-An[3]

机构：[1] School of Chemistry and Environmental Engineering, Jianghan University, Wuhan 430056, China; [2] School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; [3] ESIQIE, Instituto Politécnico Nacional, Av. Politécnico S/N, 07738 México D.F., Mexico

会议论文集：Advances in New Catalytic Materials

会议日期：August 16, 2009 - August 20, 2009

会议地点：Cancun, Mexico

语种：英文

外文关键词：Hydrogen peroxide - Diesel fuels - Adsorption - Desulfurization - Oxidation - Catalyst supports

摘要：Phosphotungstic acid (HPW) supported on activated carbon (AC) combined with hydrogen peroxide formed an oxidative desulfurizaiton (ODS) system to oxidize sulfur-containing compounds in diesel fuel. Dibenzothiophene (DBT) dissolved in n-octane was selected as a model feedstock for studying this new ODS system. The HPW/AC catalysts were characterized with XRD, FTIR and N2 adsorption-desorption measurements. HPW was highly dispersed on the surface of carbon support. It was found that the DBT adsorption capacity decreased from 42 mg S/g to 33.13 mg S/g as HPW loading amount increased from 0 to 15 wt.%. Oxidative removal of DBT in the model oil significantly increased with increasing HPW loadings on the support from 0 to 10 wt.%. 100 % DBT was removed by using the catalysts with HPW content higher than 10 wt. %. At 80 °C, oxidative removal of DBT reached 100 % after 40 min of reaction when O/S molar ratio ranged from 4 to 10. ? (2010) Trans Tech Publications, Switzerland.