Black powder catalyst for hydrogen production via steam reforming

Patent metadata

Field	Value
Publication number	US-2024034623-A1
Application number	US-202318482261-A
Country	US
Kind code	A1
Filing date	Oct 6, 2023
Priority date	Jan 4, 2021
Publication date	Feb 1, 2024
Grant date	—

Abstract

A steam reforming catalyst that includes treated black powder (primarily hematite), and a method of treating black powder (e.g., from a natural gas pipeline) to give the treated black powder. A steam reformer having the treated black powder as reforming catalyst, and a method of producing syngas with the steam reformer.

First claim

What is claimed is:

1 . A method of preparing a reforming catalyst for steam reforming methane, comprising:
receiving black powder; applying heat to the black powder to remove carbon from the black powder; and calcining the black powder in presence of air to give calcined black powder as the reforming catalyst, wherein the calcined black powder comprises hematite.

2 . The method of claim 1 , comprising collecting the black powder from a natural-gas pipeline system.

3 . The method of claim 1 , wherein receiving the black powder comprises receiving the black powder collected from a natural-gas pipeline system, wherein applying heat to the black powder to remove carbon from the black powder gives a heat-treated black powder, and wherein calcining the black powder comprises calcining the heat-treated black powder in the presence of air to give the calcined black powder as the reforming catalyst.

4 . The method of claim 1 , wherein applying heat comprises applying the heat at a temperature of at least 500° C. for at least 3 hours to remove the carbon from the black powder.

5 . The method of claim 1 , wherein the calcining comprises applying heat to the black powder in the presence of air at a temperature of at least 775° C. for at least 4 hours to give the calcined black powder as the reforming catalyst, wherein the hematite is at least 50 weight percent of the calcined black powder.

Assignees

• Saudi Arabian Oil Co

Inventors

• Wedhaya Ahmad A
• Fadhel Bandar A
• Albuali Mohammed A
• Bamagain Rami

Classifications

• B01J2235/15

  X-ray diffraction · CPC title

• B01J2235/00

  Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties · CPC title

• C01B3/40 Primary

  characterised by the catalyst · CPC title

• B01J23/745 Primary

  Iron · CPC title

• B01J8/065

  Feeding reactive fluids · CPC title