Method for the removal of organic sulfur from carbonaceous materials
AssigneeExxon Research & Engineering Co.
InventorsMatthew J. Grossman, Michael Siskin, David T. Ferrughelli, M. Kathryn Lee, James D. Senius
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Abstract
A process to remove organic sulfur from organic compounds and organic carbonaceous fuel substrates containing sulfur compounds having sulfur-carbon bonds is disclosed. The steps of the process include oxidizing the sulfur species to the sulfone and/or sulfoxide form, and reacting the sulfone and/or sulfoxide form in an aqueous media of the reacting step including a hydride transfer reducing agent. In a particular embodiment, the reducing agent is sodium formate, the oxidizing agent is a microorganism as exemplified by Rhodococcus species ATCC 55309 or Rhodococcus species ATCC 55310 or combinations thereof.
Claims15
A process to remove organic sulfur from carbonaceous materials, fuels, and fuel precursors containing at least one organic sulfur compound having sulfur-carbon bonds, the steps of the process comprising:
- (a) oxidizing said organic sulfur compound to a chemical compound selected from the group consisting of sulfone compounds and sulfoxide compounds and combinations thereof;
- and
- (b) reacting chemically said chemical compound in an aqueous medium including a hydride transfer reducing agent to reduce the sulfur in said chemical compound.
Dependencies are inferred from the claim text.