Abstract: A process for sweetening a sour hydrocarbon fraction containing mercaptan which comprises reacting mercaptans contained in the hydrocarbon fraction with an oxidizing agent by passing said hydrocarbon fraction and said oxidizing agent into contact with a heterogeneous admixture of a metal chelate mercaptan oxidation catalyst and a solid desiccant.

Abstract: A method of reactivating a mercaptan oxidation catalytic composite of an adsorptive support and a metal chelate comprising contacting the composite with an aqueous solution of a quaternary ammonium compound and a linear ionic compound at a temperature of from about 55.degree. C. to about 175.degree. C.

Abstract: A method of treating a mercaptan-containing sour petroleum distillate which comprises contacting said distillate with a catalytic composite comprising a carrier material, a metal chelate oxidation catalyst, a substituted ammonium compound, and a linear ionic compound.

Abstract: Disclosed is a method for treating sour mercaptan-containing petroleum distillates by contacting the distillates at oxidation conditions with a catalytic composite comprising a metal chelate, an alkali metal hydroxide, and a quaternary ammonium hydroxide disposed on an adsorptive support, thereby converting the mercaptan compounds contained in said distillates to disulfides.

Abstract: A catalytic composite especially useful in the treatment of sour petroleum distillates, comprising a carrier material, a metal chelate, a substituted ammonium compound, and a linear ionic compound. A method of preparing a catalytic composite comprising contacting a carrier material with a solution of a metal chelate, a substituted ammonium compound, and a linear ionic compound.

Abstract: A supported metal chelate catalyst, and a method of preparing said catalyst is disclosed. The catalyst is particularly useful in the treatment of a sour petroleum distillate or fraction to remove mercaptans contained therein. In preparing the catalyst, a solid adsorptive support is contacted with a solution of a metal chelate and with a substituted ammonium compound, and thereafter heated.In one embodiment, the metal chelate, cobalt phthalocyanine disulfonate, is contacted with the adsorptive support, activated charcoal, contacted with the substituted ammonium compound, dimethylbenzylalkylammonium chloride, and then raised to a temperature of 120.degree. C.

Abstract: A method of reactivating a mercaptan oxidation catalytic composite of an adsorptive support and a metal chelate comprising contacting the composite with an aqueous solution of a quarternary ammonium compound and a linear ionic compound at a temperature of from about 55.degree. C. to about 175.degree. C.

Abstract: A method of reactivating a mercaptan oxidation catalytic composite of an adsorptive support and a metal chelate comprising the steps of first contacting the composite with an aqueous ammoniacal solution of a metal chelate, and second contacting the composite with an aqueous solution of a quaternary ammonium compound at a temperature of from about 55.degree. C. to about 175.degree. C.

Abstract: A method of treating a mercaptan-containing sour petroleum distillate which comprises contacting said distillate at oxidation conditions with a mercaptan oxidation catalyst, such as a metal phthalocyanine disposed on a carrier, in the presence of a substituted ammonium compound, such as a benzyldimethylalkylammonium hydroxide, and a linear ionic compound, the latter preferably comprising a saturated compound having from about 9 to about 24 carbon atoms.

Abstract: A supported metal chelate catalyst, a method of preparing said catalyst, and a process of using said catalyst is disclosed. The catalyst is particularly useful in the treatment of a sour petroleum distillate or fraction to remove mercaptans contained therein. In preparing the catalyst, a solid adsorptive support is contacted with a solution of a metal chelate. The resulting composite is thereafter contacted at an elevated temperature with a substituted ammonium compound.In one embodiment, the metal chelate, cobalt phthalocyanine monosulfonate, is contacted with the adsorptive support, activated charcoal, raised to a temperature of about 100.degree. C., and then contacted with the substituted ammonium compound, dimethylbenzylalkylammonium chloride. In another embodiment, the catalyst of the invention can be contacted with a mercaptan-containing petroleum distillate in admixture with an oxidizing agent and an alkaline solution to convert the mercaptans to innocuous disulfide.

Abstract: Disclosed is a catalytic composite especially useful in the treatment of sour mercaptan-containing petroleum distillates. The catalytic composite comprises a metal chelate, an alkali metal hydroxide, and a quaternary ammonium hydroxide disposed on an adsorptive support. Also disclosed is a method for treating sour mercaptan-containing petroleum distillates by contacting the distillates at oxidation conditions with the foregoing catalytic composite.

Abstract: A process for treating a mercaptan-containing sour petroleum distillate is disclosed. The process comprises contacting said distillate with a supported mercaptan oxidation catalyst at oxidation conditions, said catalyst comprising a metal chelate and a quaternary ammonium hydroxide disposed on an adsorbent support.

Abstract: A supported metal chelate catalyst, a method of preparing said catalyst, and a process of using said catalyst is disclosed. The catalyst is particularly useful in the treatment of a sour petroleum distillate or fraction to remove mercaptans contained therein. In preparing the catalyst, a solid adsorptive suppot is contacted with a solution of a metal chelate and with a substituted ammonium compound, and thereafter heated.In one embodiment, the metal chelate, cobalt phthalocyanine disulfonate, is contacted with the adsorptive support, activated charcoal, contacted with the substituted ammonium compound, dimethylbenzylalkylammonium chloride, and then raised to a temperature of 120.degree. C. In another embodiment, the catalyst of the invention can be contacted with a mercaptan-containing petroleum distillate in admixture with an oxidizing agent and an alkaline solution to convert the mercaptans to innocuous disulfides.

Abstract: A method of reactivating a catalytic composite of an adsorptive carrier material and a metal chelate mercaptan oxidation catalyst is disclosed. The deactivated catalytic composite is washed with an aqueous quaternary ammonium compound solution at a temperature of from about 55.degree.-175.degree. C.

Abstract: A catalytic composite comprising a metal chelate mercaptan oxidation catalyst and a quaternary ammonium hydroxide impregnated on a solid adsorptive support is disclosed. The quaternary ammonium hydroxide is represented by the structural formula ##STR1## wherein R is a hydrocarbon radical containing up to about 20 carbon atoms and selected from the group consisting of alkyl, cycloalkyl, aryl, alkaryl and aralkyl, R.sub.1 is a substantially straight-chain alkyl radical containing from about 5 to about 20 carbon atoms, and R.sub.2 is selected from the group consisting of aryl, alkaryl, and aralkyl. The catalytic composite is particularly adapted to the oxidation of mercaptans contained in a sour petroleum distillate.

Abstract: A process for treating a mercaptan-containing sour petroleum distillate is disclosed. A sour petroleum distillate, in admixture with an oxidizing agent, is passed into contact with a catalytic composite in the presence of an alkaline reagent, said catalytic composite comprising a metal chelate mercaptan oxidation catalyst and a quaternary ammonium compound impregnated on a solid adsorbent support disposed as a fixed bed in a first treating zone. The effluent from said first zone, in admixture with an oxidizing agent, is then passed into contact with a catalytic composite in the presence of an alkaline reagent, said catalytic composite comprising a metal chelate mercaptan oxidation catalyst impregnated on a solid adsorbent support disposed as a fixed bed in a second treating zone. A petroleum distillate, substantially free of mercaptan sulfur, is recovered from the second treating zone.

Abstract: A catalytic composite comprising a metal chelate mercaptan oxidation catalyst and an alkanolamine hydroxide impregnated on a solid adsorptive support is disclosed.

Abstract: A catalytic composite comprising a metal chelate mercaptan oxidation catalyst and a quaternary ammonium salt impregnated on a solid adsorptive support is disclosed. The quaternary ammonium salt is represented by the structural formula ##STR1## wherein R is a hydrocarbon radical containing up to about 20 carbon atoms and selected from the group consisting of alkyl, cycloalkyl, aryl, alkaryl and aralkyl, R.sub.1 is a substantially straight-chain alkyl radical containing from about 5 to about 20 carbon atoms, R.sub.2 is selected from the group consisting of aryl, alkaryl, and aralkyl, and X is an anion selected from the group consisting of halide, nitrate, nitrite, sulfate, phosphate, acetate, citrate and tartrate. The catalytic composite is particularly adapted to the oxidation of mercaptans contained in a sour petroleum distillate.

Abstract: A process for treating a mercaptan-containing sour petroleum distillate is disclosed. The process comprises passing said distillate in admixture with an oxidizing agent through a fixed bed of a supported mercaptan oxidation catalyst at oxidation conditions in the presence of a quaternary ammonium hydroxide.

Abstract: A process for treating a mercaptan-containing sour petroleum distillate is disclosed. The process comprises contacting the distillate with a supported mercaptan oxidation catalyst impregnated with a polynuclear aromatic sulfonic acid, said contacting being at oxidation conditions in the presence of an alkanolamine hydroxide.