Oxidation catalyst and processes for using same

Patent metadata

Field	Value
Publication number	US-2018134969-A1
Application number	US-201815868965-A
Country	US
Kind code	A1
Filing date	Jan 11, 2018
Priority date	Jul 15, 2015
Publication date	May 17, 2018
Grant date	—

Abstract

A catalytic composition and process for using same. The catalyst may be utilized for an oxidation reaction, for example, for the conversion of mercaptans to disulfides. The catalyst includes a metal component, for example, cobalt phthalocyanine structure. The organic component may comprise any number of different oxidation promoters that are capable of promoting the reduction of oxygen, preferably in a caustic, environment. The organic component may comprise an unsaturated six member ring having at least five carbon atoms, and wherein the sixth member of the six member ring is either C or N, and in which at least two substituent groups are present on the six membered ring.

First claim

1 . A catalytic composition comprising:
a metal component comprising a metal bonded to at least two nitrogen atoms; and, an organic component comprising a six member ring having at least five carbon atoms, and wherein the sixth member of the six member ring is either C or N, and wherein at least two substituent groups for the six member ring are each independently selected from hydroxyl, amino, amides, carbonyl, carboxyl, thiol, sulfonate, and pyridine, or form a fused ring, provided that if one substituent group is a pyridine ring, the other substituent group is an alkyl group.

2 . The catalytic composition of claim 1 , wherein the sixth member of the six member ring of the organic component is C and wherein the at least two substituent groups form a six member fused ring.

3 . The catalytic composition of claim 1 , wherein the sixth member of the six member ring of the organic component is C and wherein the at least two substituent groups form a five member fused ring.

4 . The catalytic composition of claim 3 , wherein the five member fused ring includes N and wherein a third substituent group of the six member ring of the organic component comprises sulfonate.

5 . The catalytic composition of claim 1 , wherein the sixth member of the six member ring of the organic component is N.

6 . The catalytic composition of claim 5 , wherein a first of the at least two substituent groups is pyridine and wherein the second of the at least two substituent groups is bonded to the N in the six member ring of the organic component.

7 . The catalytic composition of claim 1 , wherein the sixth member of the six member ring of the organic component is C and wherein the six member ring includes at least one hydroxyl group.

8 . The catalytic composition of claim 7 , wherein the six member ring includes at least two hydroxyl groups.

9 . The catalytic composition of claim 7 , wherein the six member ring includes at least one amine group.

10 . The catalytic composition of claim 7 , wherein the six member ring includes at least one thiol group.

11 . The catalytic composition of claim 1 , wherein the sixth member of the six member ring of the organic component is C and wherein the six member ring includes at least two amine groups.

12 . The catalytic composition of claim 1 , wherein the sixth member of the six member ring of the organic component is C and wherein the six member ring includes at least three hydroxyl groups.

13 . The catalytic composition of claim 12 , wherein a fourth substituent group of the sixth member ring comprises a carboxyl group.

14 . The catalytic composition of claim 12 , wherein a fourth substituent group comprises an ester group.

15 . The catalytic composition of claim 1 , wherein the at least two substituent groups are hydroxyl groups and wherein at least one additional substituent group on the six member ring of the organic component comprises a halogen.

16 . The catalytic composition of claim 15 , wherein the at least three substituent groups are hydroxyl groups and wherein at least one additional substituent group on the six member ring of the organic component comprises a halogen.

17 . The catalytic composition of claim 1 wherein the metal component comprises a metal bonded to at least four nitrogen atoms.

18 . The catalytic composition of claim 1 wherein the metal is cobalt.

19 . A catalytic composition comprising:
a metal component comprising a metal bonded to at least two nitrogen atoms, wherein the metal component comprises at least one of cobalt phthalocyanine, cobalt phthalocyanine disulfonate, cobalt phthalocyanine sulfonamide, B12 vitamer, cobalamin, cobalt porphyrins, cobalt porphines, and cobalt tetra-aza macrocycles; and, an organic component comprising a six member ring having at least five carbon atoms, wherein the organic component comprises at least one of a bipyridinium core structure, a viologen core structure, a benzene with two or more amine groups, a benzene with two or more hydroxyl groups, a benzene with two or more sulfonane groups, a indigo core structure, indigo carmine, benezenetriol, a benzenetriol substituted with a sulfate, an ester, ether or carboxyl, phenolic acids, diphenolic acids, trihydroxyl phenolic acids, and substituted phenolic acids.

20 . A process for removing mercaptans from a hydrocarbon stream comprising:
extracting mercaptans from a hydrocarbon stream in an extraction zone with a caustic stream to provide a rich caustic stream; and, oxidizing the mercaptans in the rich caustic stream with an oxidation gas, in the presence of a catalyst, to produce disulfides, wherein the catalyst comprises a metal component comprising a metal bonded to at least two nitrogen atoms, and an organic component comprising a six member ring having at least five carbon atoms, wherein the sixth member of the six member ring is either C or N, and wherein at least two substituent groups for the six member ring are each independently selected from hydroxyl, amino, amides, carbonyl, carboxyl, thiol, sulfonate, and pyridine, or form a fused ring provided that if one substituent group is a pyridine ring, the other substituent group is an alkyl group.

Assignees

• Uop Llc

Inventors

• Shi Yili
• Thomas Neil

Classifications

• C10G29/28

  containing sulfur as the only hetero atom, e.g. mercaptans, or sulfur and oxygen as the only hetero atoms · CPC title

• C10G29/20 Primary

  Organic compounds not containing metal atoms · CPC title

• C10G2300/202

  Heteroatoms content, i.e. S, N, O, P · CPC title

• C10G29/22

  containing oxygen as the only hetero atom · CPC title

• B01J31/183

  with more than one complexing nitrogen atom, e.g. phenanthroline · CPC title