Abstract
The effects of process conditions on Fischer–Tropsch Synthesis (FTS) product distributions were studied using a fixed-bed microreactor and a Co–Mn/CNT catalyst. Cobalt and Manganese, supported on Carbon Nanotubes (CNT) catalyst were prepared by a Strong Electrostatic Adsorption (SEA) method. CNT supports were initially acid and thermally treated in order to functionalize support to uptake more Co clusters. Catalyst samples were characterized by Transmitted Electron Microscope (TEM), particle size analyzer, and Thermal Gravimetric Analysis (TGA). TEM images showed catalyst metal particle intake on CNT support with different Co and Mn loading percentage. Performance test of Co–Mn/CNT in Fischer–Tropsch synthesis (FTS) was carried out in a fixed-bed micro-reactor at different pressures (from 1 atm to 25 atm), H2/CO ratio (0.5–2.5), and reduction temperature and duration. The reactor was connected to the online Gas Chromatograph (GC) for product analysis. It was found that the reaction conditions have the dominant effect on product selectivity. Cobalt catalyst supported on acid and thermal pre-treated CNT at optimum reaction condition resulted in CO conversion of 58.7% and C5+ selectivity of 59.1%.
Highlights
Fischer–Tropsch synthesis (FTS) uses syngas to produce hydrocarbons and plays an important role in all eco-friendly fuels and renewable energy resources
CO conversion was increased to 89.4% for the 95Co5Mn/Carbon Nanotubes (CNT)
CO conversion was increased to 89.4% for the 95Co5Mn/CNT catalyst at 20 atm operating andand wasthe attributed to increased
Summary
Fischer–Tropsch synthesis (FTS) uses syngas to produce hydrocarbons and plays an important role in all eco-friendly fuels and renewable energy resources. The increase in operating pressure for FT reaction over cobalt-based catalysts has been reported to have an insignificant effect or to increase the reaction rate and C5+. Some investigators reported the effect of operation parameters on the product distribution from cobalt-based catalysts [9,10,11] and showed that the olefin contents of the product spectrum decreased with increasing pressure, which was consistent with previous investigations [12,13]. The present study aims to prepare a CNT-supported cobalt manganese bimetallic catalyst using the SEA method and focus on the study of the effect of Fischer–Tropsch reaction parameters such as pressure, H2/CO ratio, and reduction conditions on the performance of Co–Mn/CNT bimetallic catalyst
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
