Tungstophosphoric Acid-catalyzed Oxidative Desulfurization of Naphtha with Hydrogen Peroxide in Naphtha/Acetic Acid Biphasic System

• Yazu Kazumasa

  Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology

• Sato Shinya

  Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology

• Sugimoto Yoshikazu

  Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology

• Matsumura Akimitsu

  Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology

• Saito Ikuo

  Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology

Bibliographic Information

Other Title

• ナフサ／酢酸二相系中でのナフサの過酸化水素によるタングストリン酸触媒酸化脱硫

Abstract

The 12-tungstophosphoric acid (TPA)-catalyzed oxidative desulfurization of naphtha with H₂O₂ was investigated. All organosulfur compounds examined were efficiently oxidized with H₂O₂ and TPA catalyst in acetic acid (AcOH). The order of the oxidation reactivities was sulfides, disulfides > benzothiophenes > thiophenes. Methyl substituents on benzothiophenes and thiophenes increased the reactivity of the sulfur atom. The major oxidation products from the organosulfur compounds, except a few thiophenes, were the corresponding sulfones. The organosulfur compounds in octane were also oxidized with H₂O₂ and TPA catalyst in an octane/AcOH biphasic system. The oxidation proceeded in the AcOH phase and most oxidation products remained in this phase, resulting in the successive removal of the sulfur compounds from the octane phase. Using this oxidative treatment effectively reduced the sulfur content of naphtha, as the sulfur content was reduced to about 0.5 mass ppm after adsorption with silica gel. Hydrodesulfurization is an effective pretreatment for oxidative desulfurization of naphtha, by which the sulfur content can be reduced to below 0.1 mass ppm.

Journal

• Journal of the Japan Petroleum Institute

  Journal of the Japan Petroleum Institute 50 (6), 329-334, 2007

  The Japan Petroleum Institute

Keywords

• Oxidative desulfurization
• Naphtha
• Tungstophosphoric acid
• Hydrogen peroxide
• Thiophene
• Benzothiophene

Details

• CRID: 1390282680165056768
• NII Article ID: 10021125497
• NII Book ID: AA11590615
• DOI: 10.1627/jpi.50.329
• COI: 1:CAS:528:DC%2BD2sXht1Oqt73M
• ISSN: 1349273X
• ISSN: 13468804
• NDL BIB ID: 9254030
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9254030
• Web Site: https://www.jstage.jst.go.jp/article/jpi/50/6/50_6_329/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed