US 11,724,943 B2
Black powder catalyst for hydrogen production via dry reforming
Bandar A. Fadhel, Dhahran (SA); Mohammed A. Albuali, Dammam (SA); Rami Bamagain, Khobar (SA); and Ahmad A. Wedhaya, Dhahran (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Jan. 4, 2021, as Appl. No. 17/140,245.
Prior Publication US 2022/0212949 A1, Jul. 7, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B01J 23/745 (2006.01); B01J 37/08 (2006.01); B01J 37/18 (2006.01); C01B 3/40 (2006.01); C01G 49/06 (2006.01)
CPC C01G 49/06 (2013.01) [B01J 23/745 (2013.01); B01J 37/08 (2013.01); B01J 37/18 (2013.01); C01B 3/40 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method of dry reforming hydrocarbon, comprising:
receiving a black powder collected from a natural-gas pipeline system and that formed on an inside surface of a natural gas pipeline of the natural-gas pipeline system, the black powder comprising magnetite and hematite;
reacting hydrocarbon comprising methane with carbon dioxide via reforming catalyst at a temperature in a range of 500° C. to 1100° C. and at a pressure in a range of 1 bar to 28 bar to generate synthesis gas comprising hydrogen and carbon monoxide, wherein the reforming catalyst comprises a treated black powder comprising at least 50 weight percent of hematite, wherein the treated black powder comprises the black powder subjected to heat treatment at a temperature of at least 500° C. to remove carbon from the black powder and then subjected to air calcination at a temperature of at least 775° C. to give calcined black powder as the treated black powder.