Carbendazim-based catalytic materials

Patent metadata

Field	Value
Publication number	US-9425464-B2
Application number	US-201314414132-A
Country	US
Kind code	B2
Filing date	Jul 11, 2013
Priority date	Jul 11, 2012
Publication date	Aug 23, 2016
Grant date	Aug 23, 2016

Abstract

A method of preparation of M-N—C catalytic material utilizing a sacrificial support approach and using inexpensive and readily available metal precursors and carbendazim (CBDZ) as the carbon source is described.

First claim

What is claimed is:

1. A method for forming a catalytic material comprising:
providing sacrificial template particles;
reacting a metal precursor and carbendazim (CBDZ) onto the sacrificial template particles to produce dispersed precursors;
heat treating the dispersed precursors; and
removing the sacrificial template particles to produce a highly dispersed, self-supported, high surface area electrocatalytic material.

2. The method of claim 1 wherein the metal precursor is a transition metal precursor.

3. The method of claim 2 wherein the transition metal precursor is iron nitrate.

4. The method of claim 1 wherein heat treating the dispersed precursors comprises pyrolysis.

5. The method of claim 4 wherein pyrolysis is conducted at a temperature above 750° C. and below 900° C.

6. The method of claim 5 wherein pyrolysis is conducted at a temperature between 775 and 825° C.

7. The method of claim 5 wherein pyrolysis is conducted at 800° C.

8. The method of claim 4 wherein pyrolysis is conducted in a reactive atmosphere.

9. The method of claim 8 wherein pyrolysis is conducted in ammonia.

10. The method of claim 1 wherein the ratio of metal precursor:CBDZ prior to heat treatment is between 1:4 and 1:12.

11. The method of claim 10 wherein the ratio of metal precursor:CBDZ prior to heat treatment is between 1:6 and 1:10.

12. The method of claim 11 wherein the ratio of metal precursor:CBDZ prior to heat treatment is 1:8.

13. A catalytic material comprising a metal and a substantial portion of carbon derived from carbendazim (CBDZ).

14. The catalytic material of claim 13 wherein the catalytic material is unsupported.

15. The catalytic material of claim 14 wherein all of the carbon in the material is derived from CBDZ.

16. The catalytic material of claim 13 wherein the metal is derived from a transition metal precursor.

17. The catalytic material of claim 16 wherein the ratio of transition metal precursor:CBDZ is between 1:4 and 1:12.

18. The catalytic material if claim 17 wherein the ratio of transition metal precursor:CBDZ is 1:8.

19. A catalytic material formed by:
providing sacrificial template particles;
reacting a metal precursor and carbendazim (CBDZ) onto the sacrificial template particles to produce dispersed precursors;
heat treating the dispersed precursors; and
removing the sacrificial template particles to produce a dispersed, self-supported, electrocatalytic material.

20. The catalytic material of claim 19 wherein the dispersed precursors are heat treated by pyrolysis at 800° C. and the ratio of metal precursor:CBDZ prior to heat treatment is 1:8.

Assignees

• Serov Alexey
• Atanassov Plamen B
• Stc Unm

Inventors

• Serov Alexey
• Atanassov Plamen B

Classifications

• B01J23/745 Primary

  Iron · CPC title

• H01M4/90

  Selection of catalytic material · CPC title

• H01M2008/1095

  Fuel cells with polymeric electrolytes · CPC title

• H01M4/9041

  Metals or alloys (H01M4/92 takes precedence) · CPC title

• Y02E60/50

  Fuel cells · CPC title