Iron catalyst supported on carbon nanotubes for Fischer–Tropsch synthesis: Effects of Mo promotion

摘要: Abstract Our studies on the application of carbon nanotubes (CNTs) as support have shown that iron catalysts supported CNTs are active and selective for Fischer–Tropsch synthesis (FTS). However, these experienced deactivation a result site agglomerations. In order to control agglomeration site, which is an important step in developing novel catalyst carbon-based supports, effects Mo promotion behavior were studied. this work properties catalytic performance unpromoted compared with promoted different contents (0.5, 1, 5, 12 wt%). Based TEM XRD analyses, resulted production smaller metal particles catalyst. According analysis, species deposited their amorphous structure. TPR analyses showed addition increased reduction temperature significantly. particle size oxides from 16 25 nm under FT operating conditions, while oxide (∼12–14 nm) did not change noticeably same conditions. Activity, selectivity stability 0.5–1 wt% more stable Higher (5 12 wt%) decreased activity due coverage lower extent reduction. (0.5–12 wt%) toward lighter hydrocarbons. The 0.5 wt% stabilized minimal increase (2%) methane selectivity.