Process for oxidation of organosulfur compounds

Patent metadata

Field	Value
Publication number	US-11149209-B2
Application number	US-201816632623-A
Country	US
Kind code	B2
Filing date	Jul 20, 2018
Priority date	Jul 21, 2017
Publication date	Oct 19, 2021
Grant date	Oct 19, 2021

Abstract

The present invention refers to process for oxidation of organosulfur compounds comprising metal AQCs having between 5 and 13 metal atoms as catalyst. Additionally, the present invention refers to the use of the metal AQCs having between 5 and 13 metal atoms as catalyst in the oxidation of organosulfur compounds and to a chemical composition comprising organosulfur compounds and metal AQCs having between 5 and 13 metal atoms.

First claim

The invention claimed is:

1. A process for oxidation of an organosulfur compound comprising the following steps:
i) providing a catalyst comprising metal Atomic Quantum Clusters (AQCs) consisting of between 5 and 13 metal atoms; wherein the metal of the metal Atomic Quantum Clusters (AQCs) is selected from Ag, Co, Cu, Pt, Fe, Pd, Ni or their bi-metal and multi-metal combinations; and
ii) contacting the catalyst of step (i) with an organosulfur compound to oxidize said organosulfur compound;
wherein the contacting of step (ii) is performed in a liquid having oxygen dissolved;
wherein the step (ii) is performed at room temperature and atmospheric pressure; and
wherein the organosulfur compound is selected from sulfur-containing heterocyclic chemical compounds, asphaltenes and mixtures thereof.

2. A process for oxidation of an organosulfur compound as defined in claim 1 , wherein the metal of the metal AQCs is selected from Ag, Cu and combinations thereof.

3. A process for oxidation of an organosulfur compound as defined in claim 1 , wherein the metal AQCs have 5 metal atoms.

4. A process for oxidation of an organosulfur compound as defined in claim 1 , wherein the metal AQCs is supported in a support material.

5. A process for oxidation of an organosulfur compound as defined in claim 1 , wherein the contacting step (ii) is performed by mixing the catalyst and the organosulfur compound in a solvent or in a mixture of solvents.

6. A process for oxidation of an organosulfur compound as defined in claim 1 , wherein the contacting step (ii) is performed by passing the organosulfur compound dispersed in a solvent through the catalyst, wherein the catalyst comprises the metal AQCs supported in a support material.

7. A process for oxidation of an organosulfur compound as defined in claim 1 , wherein the organosulfur compound of step (ii) is comprised within a hydrocarbon mixture.

8. A process for oxidation of an organosulfur compound as defined in claim 1 , wherein the organosulfur compound is selected from thiophene, bithiophene, thienothiophene, benzothiophene, dibenzothiophene, tetrabenzothiophene, polythiophene, phenylthiophene, tetraphenylthiophene, thianthrene, dibenzyl sulfide, phenyl sulfide, phenyl disulfide, asphaltenes and mixtures thereof.

9. A process for oxidation of an organosulfur compound as defined in claim 1 , wherein a sulfate is formed as a result of the oxidation of the organosulfur compound of step (ii).

10. A process for oxidation of an organosulfur compound as defined in claim 1 , wherein the catalyst of step (i) is a homogeneous catalyst in dispersion.

Assignees

• Univ Santiago Compostela
• Nanogap Sub Nm Powder S A

Inventors

• López Quintela Manuel Arturo
• Buceta Fernández David

Classifications

• B01J35/45

  Nanoparticles · CPC title

• C10G29/04 Primary

  Metals, or metals deposited on a carrier · CPC title

• C10G2300/70

  Catalyst aspects · CPC title

• B01J23/72

  Copper · CPC title

• C10G2300/206

  Asphaltenes · CPC title