Abstract: The demercaptanizaiton of petroleum distillates can be carried out by sorption of the mercaptan with activated carbon and oxidation of the sorbed mercaptan to disulfide at between approximately 20° C. to 55° C. The activated carbon used in the process is commercially readily available. Its surface area typically ranges from between approximately 500 to 1500 m2/g and has substantial percentage of the pores in the 10 to 100 Angstrom range.
Abstract: The demercaptanizaiton of petroleum distillates can be carried out by sorption of the mercaptan with activated carbon and oxidation of the sorbed mercaptan to disulfide at between approximately 20° C. to 55° C. The activated carbon used in the process is commercially readily available. Its surface area typically ranges from between approximately 500 to 1500 m2/g and has substantial percentage of the pores in the 10 to 100 Angstrom range.
Abstract: The desulfurization of petroleum distillates can be carried out by cyclic low-temperature adsorption of oxidized sulfur compounds with activated carbon followed by regeneration of the activated carbon using an organic solvent. The activated carbon used in the process is commercially available and its surface area that ranges from approximately 500 to 2000 m2/g having a substantial portion of its pores in the range between 10 to 100 Angstroms.
Abstract: Sulfur-containing carbonaceous materials are desulfurized by reaction with a mixture of an oxidizing agent and a carbonyl compound under alkaline conditions at a temperature ranging from ambient temperature to about 250.degree. F. and a pressure of about 1 atmosphere to 2 atmospheres. The products of the reaction are a desulfurized carbonaceous material in which the sulfur content is less than about 1%, and gaseous sulfur compounds. The carbonyl compound can be recovered and reused.
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