Oxidation Desulfurization of Thiophene Using Phase Transfer Catalyst/H2O2 Systems

• Published in: Petroleum science and technology Vol. 26; no. 9; pp. 1099 - 1107
• Main Authors: Zhao, D. S., Zhou, E. P., Wang, J. L., Li, F. T., Wang, N.
• Format: Journal Article
• Language: English
• Published: Colchester Taylor & Francis Group 01.06.2008; Taylor & Francis
• Subjects: Applied sciences; Bromides; Catalysts; Crude oil; Crude oil, natural gas and petroleum products; desulfurization; Desulfurizing; Energy; Exact sciences and technology; extraction; Fuels; Optimization; Oxidation; Petroleum products, gas and fuels. Motor fuels, lubricants and asphalts; Phase transfer catalysts; Processing of crude oil and oils from shales and tar sands. Processes. Equipment. Refinery and treatment units; thiophene; Thiophenes; Desulfurization; phase-transfer catalysts; Oxidation; Thiophene; Sulfur; extraction; Catalyst
• ISSN: 1091-6466; 1532-2459
• DOI: 10.1080/10916460802076677

In our study, an effective phosphomolybdic acid/hexadecyltrimethyl-ammonium bromide catalyst for oxidative desulfurization of thiophene in a model compound was formed. The oxidation activities of thiophene for a series of heteropoly acids were estimated. The results show that the oxidation activity of thiophene increased with increasing oxidation time, oxidation temperature, and the volume of 30% H 2 O 2 oxidant. The optimal values are 150 min, 40°C, and 3 mL, and sulfur removal attained 96.3% when phosphotungstic acid/hexadecyltrimethylammonium bromide was used as a catalyst.