Imidazole-derived materials

Patent metadata

Field	Value
Publication number	US-9722256-B1
Application number	US-201514877104-A
Country	US
Kind code	B1
Filing date	Oct 7, 2015
Priority date	Nov 27, 2012
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

In the present disclosure, imidazole-derived materials including M-N—C catalysts, imidazole-derived MOFs and MOF-based M-N—C catalysts as well as methods for preparing the same utilizing mechanochemical synthesis and/or a sacrificial support-based methods are described.

First claim

What is claimed is:

1. A method for forming a material comprising:
providing precursors of imidazole, a derivative of imidazole, or an imidazole family member and a transition metal;
interacting the imidazole, derivative of imidazole, or imidazole family member and transition metal precursors in the presence of a supporting material so as to enable the imidazole, derivative of imidazole, or imidazole family member, and transition metal precursors to form around and/or infuse the supporting material; and
heat treating the dispersed precursors.

2. The method of claim 1 wherein the step of interacting comprises depositing precursors on the supporting material.

3. The method of claim 1 wherein the step of interacting comprises impregnating the supporting material with the precursors.

4. The method of claim 3 wherein the sacrificial support is porous and the imidazole and transition metal precursors impregnate the pores of the sacrificial support.

5. The method of claim 4 wherein the sacrificial support is silica.

6. The method of claim 1 wherein the supporting material is a sacrificial support and the method further comprises removing the sacrificial support after the step of heat treating.

7. The method of claim 6 further comprising ball-milling the imidazole and transition metal precursors in the presence of a supporting material.

8. The method of claim 7 wherein the supporting material comprises carbon.

9. The method of claim 7 wherein the supporting material consists of carbon.

10. The method of claim 7 wherein the sacrificial support is silica.

11. The method of claim 6 further comprising a second heat treatment after the sacrificial support is removed.

12. The method of claim 1 further comprising ball-milling the imidazole and transition metal precursors in the presence of a supporting material.

13. The method of claim 12 wherein the sacrificial support is silica.

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

15. The method of claim 1 wherein the imidazole, derivatives of imidazole, or imidazole family member is selected from the group consisting of Benzimidazole, AminoBenzimidazole, and Methylimidazole.

Assignees

• Serov Alexey
• Atanassov Plamen B
• Stc Unm

Inventors

• Serov Alexey
• Atanassov Plamen B

Classifications

• H01M4/9008 Primary

  Organic or organo-metallic compounds · CPC title

• H01M2008/1095

  Fuel cells with polymeric electrolytes · CPC title

• C07F15/025

  without a metal-carbon linkage · CPC title

• H01M4/8846

  Impregnation · CPC title

• B01J37/0018

  Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat) · CPC title