Springer Online Journal Archives 1860-2000
Chemistry and Pharmacology
Conclusions 1. Decomposition of iron carbonyls in nonpromoted aluminum-iron catalysts and catalysts modified with lithium basically results in the formation of oxidized forms of iron. In promotion of the samples with sodium, potassium, and rubidium, the iron on the surface of the aluminum oxide is stabilized in the metallic state. A decrease in the concentration of hydroxyl groups in the carrier which are capable of oxidizing iron during decomposition of carbonyls is the cause of this. 2. Iron-carbonyl catalysts promoted with sodium, potassium, and rubidium additives are significantly more active in the synthesis of hydrocarbons from carbon monoxide and hydrogen than the nonpromoted catalyst and the sample containing lithium. Metallic iron is the active component of these catalysts.
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