Catalysts for the mechanocatalytic oxidative depolymerization of polymer-containing materials and methods of making oxidized reaction products using same

Patent metadata

Field	Value
Publication number	US-10294184-B2
Application number	US-201414772897-A
Country	US
Kind code	B2
Filing date	Mar 7, 2014
Priority date	Mar 8, 2013
Publication date	May 21, 2019
Grant date	May 21, 2019

Abstract

The presently disclosed and/or claimed inventive concept(s) relates generally to oxidative oxidized reaction products made from the mechanocatalytic oxidative depolymerization of lignin. More particularly, but without limitation, the mechanocatalytic oxidative depolymerization of lignin is performed in a non-aqueous/non-solvent based and solvent-free process, i.e., via a solid-solid mechanocatalytic oxidative reaction methodology. In one particular embodiment, the process of making such oxidative oxidized reaction products includes, without limitation, the step of mechanocatalytically reacting an oxidation catalyst with lignin or a lignin-containing material. The oxidative reaction products obtained from the process include, for example, at least one of vanillin, and syringealdehyde, vanillic acid, and syringic acid.

First claim

The invention claimed is:

1. A method for the production of an oxidized reaction product comprising at least one of vanillin, syringaldehyde, vanillic acid, and syringic acid, comprising the step of mechanocatalytically reacting an amount of a lignin containing material and an oxidation catalyst containing at least one of a 5% K-Birnessite, or a 50% mixture of K-Birnessite and CeO 2 in ratio of 3:1, in a non-aqueous and solvent-free environment for a period of time sufficient to produce the oxidized reaction product.

2. The method of claim 1 , wherein the oxidation catalyst comprises a solid metal oxide comprising at least one of manganese oxides, cerium oxides, copper oxides, silver oxides, and combinations thereof.

3. The method of claim 2 , wherein the oxidation catalyst comprises a solid metal oxide comprising at least one of manganese oxides, cerium oxides, and combinations thereof.

4. The method of claim 2 , wherein the oxidation catalyst comprises hexagonal carbon nitride.

Assignees

• Univ Central Florida Res Found Inc

Inventors

• Blair Richard

Classifications

• C07C65/21

  containing ether groups, [IMAGE cpc-sch-C07C-0958.gif] groups,[IMAGE cpc-sch-C07C-0959.gif] groups, or[IMAGE cpc-sch-C07C-0960.gif] groups · CPC title

• B01J23/8926

  Copper and noble metals · CPC title

• B01J23/34

  Manganese · CPC title

• C07C51/347

  by reactions not involving formation of carboxyl groups · CPC title

• B01J23/10

  of rare earths · CPC title