Effects of metal oxides on stability and Activity of iron-based chromia-free catalysts For water-gas shift reaction

摘要

The iron based catalysts for water-gas shift reaction are important in hydrogen production and ammonia synthesis. The effects of metal oxides added into the chromia-free iron based catalysts on the crystal structure, stability and catalytic activity f the catalysts were studied by temperature progammed reduction technique (TRP), X-ray analysis and catalystic activity test. The results show that different metal oxides have different effects on the structural stability and catalytic activity of the catalysts, among which CeO_2 and Bi_2O_3 can enhance the stability and activity of the catalysts.