Method and apparatus for chemical process intensification

Patent metadata

Field	Value
Publication number	US-9486787-B1
Application number	US-201514857468-A
Country	US
Kind code	B1
Filing date	Sep 17, 2015
Priority date	Sep 17, 2015
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

Embodiments disclosed herein generally relate to methods and apparatus for simultaneous generation and separation processes. The apparatus provides a membrane module including a substrate, a catalytic layer and a membrane layer. The catalytic layer includes nano-sized sulfur-tolerant catalysts and/or particles. As a result, the apparatus can operate in sulfur-free and sulfur-laden (sour gas) environments for water gas shift (WGS) reactions while maintaining high reaction conversion. Methods for forming catalytic films are also disclosed herein. In one embodiment, methods of forming lanthanide containing oxysulfate nanocatalysts are provided.

First claim

What is claimed is:

1. A method for forming nanocatalysts, comprising:
mixing at least one organic solvent with at least one surfactant to form a composition;
mixing the composition with a lanthanide containing material to form a lanthanide containing sulfide nanocatalyst; and
exposing the lanthanide containing sulfide nanocatalyst to oxygen and heat to form a lanthanide containing oxysulfate nanocatalyst.

2. The method of claim 1 , wherein the organic solvent comprises toluene, hexane, or combinations and mixtures thereof.

3. The method of claim 1 , wherein the at least one surfactant is selected from the group consisting of oleylamine, oleic acid, and octadecene.

4. The method of claim 1 , wherein the lanthanide containing sulfide nanocatalyst comprises europium oxysulfide, lanthanum sulfide, or praseodymium sulfide.

5. The method of claim 1 , wherein the lanthanide containing oxysulfate nanocatalyst comprises lanthanum oxysulfate or praseodymium oxysulfate.

6. The method of claim 1 , wherein the lanthanide containing oxysulfate nanocatalyst comprises a palladium containing catalytic film.

7. A method for forming a catalytic film, comprising:
mixing at least one organic solvent with at least one surfactant to form a composition;
mixing the composition with a lanthanide containing material to form a lanthanide containing sulfide nanocatalyst;
exposing the lanthanide containing sulfide nanocatalyst to oxygen and heat to form a lanthanide containing oxysulfate nanocatalyst;
exposing a porous oxide layer of a catalytic membrane module to the lanthanide containing oxysulfate nanocatalyst to impregnate the porous oxide layer with the lanthanide containing oxysulfate nanocatalyst to form a catalytic film, wherein the catalytic membrane module comprises the catalytic film disposed between a membrane layer and a substrate.

8. The method of claim 7 , wherein the catalytic film, the membrane layer, and the substrate are formed in a tubular geometry or a planar geometry.

9. The method of claim 7 , wherein the substrate comprises porous stainless steel or a ceramic material.

10. The method of claim 7 , wherein the lanthanide containing oxysulfate nanocatalyst comprises lanthanum oxysulfate or praseodymium oxysulfate.

11. The method of claim 7 , wherein the porous oxide layer comprises zirconium oxide.

12. The method of claim 7 , wherein the catalytic membrane module is configured to be used in a compact catalytic membrane reactor.

13. The method of claim 7 , wherein the membrane layer comprises palladium or a palladium alloy.

14. A method for forming a catalytic film, comprising:
mixing at least one organic solvent with at least one surfactant to form a composition;
mixing the composition with a lanthanide containing material to form a lanthanide containing sulfide nanocatalyst;
exposing the lanthanide containing sulfide nanocatalyst to oxygen and heat to form a lanthanide containing oxysulfate nanocatalyst;
exposing a porous oxide layer of a catalytic membrane module to the lanthanide containing oxysulfate nanocatalyst to impregnate the porous oxide layer with the lanthanide containing oxysulfate nanocatalyst to form a catalytic film, wherein the catalytic membrane module comprises a substrate disposed between the catalytic film and a membrane layer.

15. The method of claim 14 , wherein the catalytic film, the membrane layer, and the substrate are formed in a tubular geometry or a planar geometry.

16. The method of claim 14 , wherein the substrate comprises porous stainless steel or a ceramic material.

17. The method of claim 14 , wherein the lanthanide containing oxysulfate nanocatalyst comprises lanthanum oxysulfate or praseodymium oxysulfate.

18. The method of claim 14 , wherein the porous oxide layer comprises zirconium oxide.

19. The method of claim 14 , wherein the catalytic membrane module is configured to be used in a compact catalytic membrane reactor.

20. The method of claim 14 , wherein the membrane layer comprises palladium or a palladium alloy.

Assignees

• Univ Wyoming

Inventors

• Li Dongmei
• Tan Shuai

Classifications

• C01F17/294

  Oxysulfides · CPC title

• C01B2203/1076

  Copper or zinc-based catalysts · CPC title

• B01D2325/10

  Catalysts being present on the surface of the membrane or in the pores · CPC title

• B01J37/0244

  Coatings comprising several layers · CPC title

• B01J37/349

  making use of flames, plasmas or lasers · CPC title