MAGNETO-CHEMICAL CHARACTER STUDIES OF NOVEL Fe CATALYSTS FOR COAL LIQUEFACTION

National Energy Technology Laboratory (U.S.)

关键词: Hydrocarbons;    Iron Carbides;    Iron;    01 Coal, Lignite, And Peat;    Pyrolysis;   

DOI  :  10.2172/786858
RP-ID  :  FG22-96PC96225--08
RP-ID  :  FG22-96PC96225
RP-ID  :  786858

美国|英语

来源: UNT Digital Library

【 摘 要 】

FTIR studies on FeMoO{sub 3} catalysts indicate that samples prepared by the pyrolysis method produce smaller size particles and promote more interactions with the metal catalysts. In samples prepared by coprecipitation, it is likely that iron carbides might be forming, inhibiting carbonyl and carbonate formations. In Fe-Co-MoO{sub 3} catalysts exposure to syngas seems to replace MoO{sub 3} with CO, generating cobalt carbonyl structures. Even though iron with other supports is known to be a hydrocarbon selective catalyst, with MoO{sub 3} as a support, seems to be a poor syngas conversion catalyst, while cobalt with MoO{sub 3} as a support generate carbonyl-like structures. These findings suggest that Fe-CO-MoO{sub 3} is a better syngas conversion catalyst and pyrolysis method seems to promote these formations better than coprecipiation method. Our direct liquefaction experimental results support these findings.