Insights into promoter-enhanced aqueous phase CO hydrogenation over Co@TiO2 mesoporous nanocomposites

The particle sizes and metal support interactions play a pivotal role in Fischer Tropsch synthesis. Herein, promoter-embedded Co/TiO2 mesoporous nanocomposites with high surface area were synthesized through templated assisted solvothermal method comprising highly dispersed spherical shaped Co nanoparticles on titania of less than 10 nm. Moreover, synthesis aqueous media, rather wax-slurry, is new relatively attractive approach to improve product selectivity catalyst isolation. Aqueous phase Fischer-Tropsch (AFTS) unified catalytic process CO conversion enhance towards higher hydrocarbon (C5+) at low temperatures. performance under hydrogenation was investigated varying cobalt, platinum, manganese promoter concentrations obtain an optimized recipe for AFTS. interaction has been studied the help temperature-programmed reduction (TPR) couple XPS HRTEM analysis. dispersibility active species demonstrated H2 chemisorption coupled pulse reoxidation experiments. CO-TPD STEM analysis have performed understand during reaction. reaction parameters thoroughly by temperature pressure conditions. (3 M0.5P25C) exceptional rate 1.75 molCO.molCo−1.h−1 (excluding CO2) 73% C5+ hydrocarbons 5% methane. Additionally, despite phase, rates 3M1P25C kinetically modeled well standard empirical expressions, little H2O term dependence.