Journal
POLISH JOURNAL OF CHEMICAL TECHNOLOGY
Volume 15, Issue 1, Pages 27-29Publisher
VERSITA
DOI: 10.2478/pjct-2013-0006
Keywords
iron catalyst; promoters; ammonia synthesis; selective etching
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Taking advantage of differences in etching rates of crystallographic phases, forming an oxidized form of the fused iron catalyst, a content of promoters in main phases, magnetite and wustite, was determined. A calcium oxide content in magnetite and wustite was 0.54 wt% and 3.59 wt%, respectively. Aluminum oxide was found in the magnetite phase, and its content was 4.5 wt%. The third promoter, potassium oxide, was almost completely located outside these phases. XRD and ICP-OES instrumental methods were used in the investigations.
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