Effect of Zr Promoter on the ۱۵Co/SiO ۲ nanocatalyst in Fischer -Tropsch synthesis

The addition of various amounts of Zr(۳,۶,۱۰% wt) to SiO۲ supported cobalt catalyst significantly affected the catalyst activity and product selectivity. The catalysts synthesized by ۱۵%wt. cobalt by dry impregnation method and tested in the ۱/۴'' (ID) fixed bed reactor at ۲۱۰°C, ۱ atm and H۲/CO ratio of ۲ as reaction conditions. The catalysts were characterized by XRD, ICP and BET techniques. Addition of ۱۰% Zr to the bare catalyst, results show that increasing ۴۷% and ۴۳% for CO conversion and CH۴ selectivity, respectively. The promoting effect appears to be mainly due to strong metal support interaction (SMSI) effect due to changing the nanoparticle size of the catalyst with Zr as a promoter.

کلیدواژه ها:

Fischer -Tropsch synthesis ، nano catalyst ، Promoter