Chevron Phillips Chemical Company LP

Kenneth M Lassen

Daniel M Hasenberg

Jason L Kreider

Michael S Matson

Henry Hwu

Dave C Schwierman

Steven M Bischof

Jim D Byers

Robert C Coffin

Lauren M Kattchee

Dale M Solaas

Brian Gerlach

Jonathan Powell

Ugochukwu Nwagwu

Daniel M Hassenberg

Processes for removing carbon disulfide from product streams containing a sulfide compound are performed by contacting the product stream with an alkanolamine and converting the carbon disulfide to a higher boiling point product, thereby reducing or eliminating carbon disulfide from the product stream. Subsequent removal of the higher boiling point product via distillation can lead to a purified sulfide stream with high purity.

Processes for removing carbon disulfide from symmetrical and asymmetrical sulfide product streams

The present disclosure provides for processes and systems for the purification of alkyl sulfide product streams including dimethyl sulfide (DMS). In some aspects, the disclosure provides for the removal of carbon disulfide (CS) from DMS via hydrolytic catalysis. In further embodiments, the disclosed catalytic processes are performed using mixed-metal catalyst systems such as cobalt-molybdenum (CoMo) and nickel-molybdenum (NiMo) catalyst systems.

Catalytic processes and systems for alkyl sulfide purification

Methods for synthesizing a mercaptan compound include the steps of contacting a nickel-molybdenum catalyst with HS at a sulfiding temperature of less than or equal to 235° C. to form a supported sulfur-containing catalyst, and then contacting an alcohol compound or an olefin compound, HS, and the supported sulfur-containing catalyst to form a reaction mixture containing the mercaptan compound.

Methods of making mercaptan compounds using nickel-molybdenum catalysts

Pyrrole compounds are produced by contacting a furan compound, a solid acid catalyst, and water to form a reaction mixture containing a &#x3b3;-dicarbonyl compound, and then contacting the &#x3b3;-dicarbonyl compound with ammonia or an ammonium salt to form a reaction product mixture containing the pyrrole compound. A representative pyrrole compound that can be synthesized using these processes is 2,5-dimethylpyrrole.

Two-step synthesis of pyrrole compounds from furan compounds

The present invention discloses methods for synthesizing asymmetrical sulfide compounds and asymmetrical ether compounds from a variety of ether, sulfide, alcohol, and thiol reactants that are contacted in the presence of a suitable catalyst. Conversions of the limiting reactant to the desired asymmetrical sulfide or asymmetrical ether compound generally exceed 50%.

Synthesis of asymmetrical sulfide compounds and asymmetrical ether compounds

A composition comprising olefin oligomers of one or more olefin monomers, the olefin monomers comprising a branched Colefin monomer comprising i) 3-propyl-1-heptene, ii) 4-ethyl-1-octene, iii) 5-methyl-1-nonene, or iv) any combination thereof. A composition comprising substantially hydrogenated olefin oligomers, wherein the olefin oligomers are oligomers of one or more olefin monomers, the olefin monomers comprising a branched Colefin monomer comprising i) 3-propyl-1-heptene, ii) 4-ethyl-1-octene, iii) 5-methyl-1-nonene, or iv) any combination thereof. A process comprising a) contacting 1) a catalyst system and 2) a monomer feedstock comprising a branched Colefin monomer comprising i) 3-propyl-1-heptene, ii) 4-ethyl-1-octene, iii) 5-methyl-1-nonene, or iv) any combination thereof in a reaction zone; and b) forming olefin oligomers.

Decene oligomers

The present invention discloses processes for producing methyl ethyl sulfide by contacting dimethyl sulfide and diethyl sulfide in the presence of a suitable catalyst. Methyl ethyl sulfide can be used as an odorant in natural gas. Integrated mercaptan and sulfide manufacturing systems and integrated methods for making mercaptans and sulfides also are disclosed.

Synthesis of methyl ethyl sulfide and related production systems

The present invention discloses processes for producing a thiol compound or a sulfide compound from an olefin compound. Diphenylamine or a phenol compound can be used to increase the rate of conversion of the olefin compound to the thiol compound or the sulfide compound.

Methods for producing thiol compounds and sulfide compounds using diphenylamine or a phenol compound

The present invention discloses processes for producing &#x3b3;-dicarbonyl compounds by contacting an aldehyde compound, an &#x3b1;,&#x3b2;-unsaturated carbonyl compound, and a catalyst composition in the presence of an amide diluent. The resultant &#x3b3;-dicarbonyl compounds then can be used to synthesize pyrrole compounds, such as 2,5-dimethylpyrrole.

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Bartlesville, OK, United States of America

Kenneth M Lassen