ساخت، ارزيابي، بهينه سازي و تعيين فعاليت كاتاليست هاي شيفت گاز- آب در دماي بالا

Preparation, Characterization, Optimization and Determination of Activity of the High Temperature Water-Gas Shift Reaction Catalysts

Water-gas shift reaction is an important step for production of syngas from natural gas or naphtha to produce valuable chemicals such as ammonia, methanol, hydrogen and gasoline. In this work high temperature water-gas shift catalysts were prepared by coprecipitation method using analytical grade chemicals. They were charcterized using different techniques and then their activities were investigated. The results showed that the calcined catalysts have higher degree of crystallinity. Catalysts prepared by sodium carbonate as precipitant presented higher activity. The effect of chromium oxide content of the catalysts on the activity were also studied. The suitable temperature of calcination were shown to be 350 °C.