THE INFLUENCING FACTORS OF CARBON DEPOSITION OF CATALYSTS

摘要

Carbon deposition is one of the major causes of catalyst deactivation in the refroming reactions. The factors of atmosphere, temperature,catalysts play an important part in resistance deposition . The basic supporter always used as the carrier of anti-carbon deposition has been proved by researchers. Although it has been reported that supported noble and rare earth metal catalysts have promising catalytic performances and low sensitivies to carbon deposition, the expensive, finite and non-recycle limit their utilization. Carbon deposition can block the pore of catalysts, so we can enlarge the pore of the catalysts to prolong its lifetime or pretreat the catalyst active component with sulfuration. We considered that the researches of anti-carbon should also focus on the metal catalyzers. The active phase of carbon deposition is to reduce through the interaction of (SMSI) to resist carbon deposition. In a word, in order to meet the industrialized demand, a cheapness, high activity, high stability and better anti-carbon performance catalyst or coke inhibitor should be developed in the future.