Desulfurization of diesel via the H<sub>2</sub>O<sub>2</sub> oxidation of aromatic sulfides to sulfones using a tungstate catalyst期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Desulfurization of diesel via the H₂O₂ oxidation of aromatic sulfides to sulfones using a tungstate catalyst

Authors:	Farhan Al-Shahrani Tiancun Xiao Simon A.Llewellyn Sami Barri Zheng Jiang Huahong Shi Gary Martinie Malcolm L.H. Green

Affiliation:	^aInorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, UK ^bR&DC, Dhahran 31311, Saudi Arabian Oil Company, Saudi Arabia ^cChemical Engineering Department, Imperial College, London, UK

Abstract:	A simplified oxidative desulfurizataion (ODS) catalytic system composed of Na₂WO₄, 30% H₂O₂ and CH₃CO₂H has been found suitable for the deep removal of sulfur in diesel. By combining ODS and methanol extraction, the sulfur level in a commercial diesel has been reduced from 1100 ppm to 40 ppm. Treatment of model solutions of octane containing dibenzothiophene and 4,6-dimethyl dibenzothiophene with our ODS system shows 100% conversion of the thiophenes to sulfones at 70 °C in less than 1 h.

Keywords:	Sulfur removal Oxidative desulfurizataion Deep removal of sulfur Sodium tungstate Hydrogen peroxide Sulfone
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