Process for the preparation of a catalyst and a process for producing glycols using the catalyst

Patent metadata

Field	Value
Publication number	US-10562012-B2
Application number	US-201716092052-A
Country	US
Kind code	B2
Filing date	Apr 7, 2017
Priority date	Apr 11, 2016
Publication date	Feb 18, 2020
Grant date	Feb 18, 2020

Abstract

A process for the preparation of a catalyst composition for catalysing hydrogenation and hydrogenolysis reactions wherein, (a) a carbon support is contacted with a catalyst precursor solution comprising at least one element from groups 7, 8, 9, 10 and 11 of 5 the periodic table to form a metal impregnated carbon; (b) the metal impregnated carbon is dried at a temperature of no greater than 400° C. and placed in a reactor vessel; (c) the reactor vessel is sealed; and (d) the metal impregnated carbon is treated in the reactor 10 vessel in an atmosphere comprising hydrogen at a temperature of from 25° C. to 350 ° C.

First claim

That which is claimed is:

1. A process for the production of glycols comprising the step of:
(a) contacting a carbon support with a catalyst precursor solution comprising at least one element from groups 7, 8, 9, 10 and 11 of the periodic table to form a metal impregnated carbon;
(b) drying the metal impregnated carbon at a temperature of no greater than 400° C. and placing in a reactor vessel;
(c) sealing the reactor vessel;
(d) treating the metal impregnated carbon in the sealed reactor vessel in an atmosphere comprising hydrogen at a temperature of from 25° C. to 350° C. to form an activated catalyst composition;
(e) whilst the catalyst composition remains inside the reactor vessel in an atmosphere comprising hydrogen,
supplying to the reactor vessel a saccharide-containing feedstock, a retro-aldol catalyst composition, a solvent and further hydrogen.

2. The process claimed in claim 1 , wherein the glycols comprise ethylene glycol and 1, 2-propylene glycol.

3. The process claimed in claim 1 , wherein the saccharide-containing feedstock comprises one or more saccharide selected from the group consisting of monosaccharides, disaccharides, oligosaccharides and polysaccharides.

4. The process claimed in claim 1 , wherein the retro-aldol catalyst composition comprises tungsten.

5. The process claimed in claim 1 , wherein the process is carried out at a temperature of from 80° C. to 300° C.

6. The process claimed in claim 1 , wherein catalyst precursor solution comprises ions of at least one element selected from a group consisting of ruthenium, cobalt, nickel, palladium, platinum, iridium, rhenium and copper.

7. The process claimed in claim 1 , wherein the catalyst precursor solution comprises water.

8. The process claimed in claim 1 , wherein the catalyst precursor solution comprises an alcohol or acetone.

Assignees

• Shell Oil Co

Inventors

• Colijn Hendrik Albertus
• De Vlieger Dionysius Jacobus Maria

Classifications

• B01J23/44

  Palladium · CPC title

• B01J37/0201

  Impregnation · CPC title

• C07C29/132

  by reduction of an oxygen containing functional group · CPC title

• B01J23/755

  Nickel · CPC title

• C07C31/202

  Ethylene glycol · CPC title