Robust high temperature sulfur sorbents and methods of making the same

Patent metadata

Field	Value
Publication number	US-9358521-B1
Application number	US-63271709-A
Country	US
Kind code	B1
Filing date	Dec 7, 2009
Priority date	Dec 9, 2008
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

A sulfur sorbent composition includes a support structure and a double oxide sulfur scavenger that is supported on the support structure. The support structure may be diatomaceous earth or a zeolitic-type mineral, and the sulfur scavenger a metal and/or a metal oxide and/or a combination of two or more metal and/or oxides. The sulfur sorbent composition can be used either as a stand-alone device or in conjunction with a fuel reformer to provide a sulfur-free stream.

First claim

The invention claimed is:

1. A sulfur sorbent composition comprising:
at least one chemically inert porous support structure; and
a sulfur scavenger material supported on the porous support structure and incorporated into the pores of the porous support structure, the sulfur scavenger material consisting of a crystalline solid double oxide material that does not melt during sulfur scavenging, wherein the sulfur scavenger material retains its crystalline structure and phase stability during sulfur scavenging at a temperature ranging from about 450° C. to about 800° C.

2. The sulfur sorbent composition of claim 1 , the crystalline solid double oxide material having a formulation of ABO x , wherein x is 3 or 4 and A and B are selected from the group Ti, Mn, Fe, Co, Ni, Cu, Zn, Mo, and W.

3. The sulfur sorbent composition of claim 1 , wherein the crystalline solid double oxide material comprises oxides of zinc and molybdenum.

4. The composition of claim 1 , wherein the porous support structure comprises diatomaceous earth that contains periodic nanopores.

5. The composition of claim 1 , wherein the porous support structure comprises zeolitic-type mineral that contains mesopores.

6. The composition of claim 1 , wherein the crystalline solid double oxide material is one of: zinc molybdate (ZnMoO 4 ) or zinc molybdite (ZnMoO 3 ).

7. The composition of claim 1 , wherein the porous support structure comprises clinoptilolite, and the crystalline solid double oxide material is one of: zinc molybdate (ZnMoO 4 ) or zinc molybdite (ZnMoO 3 ).

8. The composition of claim 1 , wherein the porous support structure comprises diatomite, and the crystalline solid double oxide material is zinc molybdate (ZnMoO 4 ).

9. The composition of claim 1 , adapted for use in a reforming process to substantially remove sulfur from a fuel.

10. The composition of claim 1 , adapted for use in a reforming process to substantially remove sulfur from a jet fuel.

11. The composition of claim 1 , adapted for use in a reforming process to substantially remove sulfur from a diesel fuel.

12. The composition of claim 1 , adapted for use in a reforming process to substantially remove sulfur from a reformate.

13. The composition of claim 1 , adapted for use in a liquid phase desulfurization process.

14. The composition of claim 1 , adapted for use in a vapor phase desulfurization process.

15. The composition of claim 1 , adapted for use in a steam reforming process of sulfur-laden fuel.

16. The sulfur sorbent composition of claim 1 , wherein the sulfur scavenger material is present from about 1% to about 10%, by weight, of the support structure.

17. A reformer device comprising a sulfur scavenger material supported on a porous support structure and incorporated into the pores of the porous support structure, wherein the sulfur scavenger material consists of a crystalline solid double oxide material that does not melt during sulfur scavenging, wherein sulfur scavenging occurs from about 450° C. to about 800° C.

18. A sulfur sorbent composition comprising:
at least one chemically inert porous support structure; and
a sulfur scavenger material supported on the porous support structure and incorporated into the pores of the porous support structure, the sulfur scavenger material consisting of a crystalline solid double oxide material that does not melt below 1000° C.

Assignees

• Azad Abdul-Majeed
• Univ Toledo

Inventors

• Azad Abdul-Majeed

Classifications

• B01J20/00

  Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof · CPC title

• C01P2002/02

  Amorphous compounds · CPC title

• C01P2006/12

  Surface area · CPC title

• C01P2004/80

  Particles consisting of a mixture of two or more inorganic phases · CPC title

• C01G49/00

  Compounds of iron · CPC title