CPC C01B 3/40 (2013.01) [B01J 8/065 (2013.01); B01J 23/745 (2013.01); B01J 37/08 (2013.01); C01B 2203/0233 (2013.01); C01B 2203/1047 (2013.01)] | 9 Claims |
1. A method of steam 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 that is a steel pipeline of the natural-gas pipeline system, the black powder comprising magnetite and hematite; and
reacting hydrocarbon comprising methane with steam 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 the black powder treated by:
heating the black powder at a temperature of at least 500° C. to remove carbon from the black powder; and
subjecting the black powder to air calcination at a temperature of at least 775° C., wherein the black powder as treated comprises at least 50 weight percent of hematite.
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