Chemistry and Drug Design

Cobalt (Co) is supported by a Strong Electrostatic Adsorption (SEA) method using Carbon Nanotubes (CNT) catalyst. To promote activity and selectivity and find the optimum loading percentage and its effect on catalyst performance, Manganese (Mn) has been added to the Co/CNT catalyst. Samples were characterized by a Scanning Electron Microscope(SEM-EDX), Transmission Electron Microscope (TEM), Hydrogen Thermal Program Reduction (H2-TPR), Zeta potential, Brunauer–Emmett–Teller (BET), X-ray diffraction (XRD), X-ray Spectroscopy (XPS) TEM images showed an intake of metal particles and they were highly dispersed with a narrow particle size distribution of 6-8 nm to the external and internal CNT support. H2-TPR showed a lower temperature reduction with Mn at 420 °C for FTS reaction. Co-Mn/CNT performance test in Fischer-Tropsch Synthesis (FTS) was carried out at a temperature of 240 °C in a fixed-bed micro-reactor, a pressure of 2.0 MPa. The addition of manganese resulted in a lower methane selectivity and a higher C5+ product with an optimum percentage of 5 percent of manganese. With a CO conversion of 86.6% and a C5+ selectivity of 81.5%, which was higher than the catalysts obtained using only Co on pretreated CNT.