TY - EJOUR
AU - Kazemnejad, Iraj
AU - Feizbakhsh, Alireza
AU - Niazi, Ali
AU - Tavasoli, Ahmad
PY - 2023
DA - November
TI - Highly dispersed cobalt Fischer–Tropsch synthesis catalysts supported on γ-Al2O3, CNTs, and graphene nanosheet using chemical vapor deposition
T2 - International Journal of Industrial Chemistry
VL - 10
L1 - https://oiccpress.com/international-journal-of-industrial-chemistry/article/highly-dispersed-cobalt-fischer-tropsch-synthesis-catalysts-supported-on-%ce%b3-al2o3-cnts-and-graphene-nanosheet-using-chemical-vapor-deposition/
DO - https://doi.org/10.1007/s40090-019-00195-9
N2 - Highly dispersed 15.0 wt% cobalt catalysts were prepared on γ-Al2O3, carbon nanotubes (CNTs), and graphene nanosheet (GNS) using chemical vapor deposition (CVD) procedure. The physico-chemical properties of the catalysts were studied by inductively coupled plasma (ICP), Brunauer–Emmett–Teller (BET), X-ray powder diffraction (XRD), field-emission scanning electron microscopy (FESEM), and temperature-programmed reduction (TPR) techniques, and the Fischer–Tropsch synthesis (FTS) performance of the catalysts was assessed at 220 °C, 18 bar, H2/CO = 2 and feed flow rate of 45 ml/min g cat. Based on BET results, Co/GNS catalyst provided highest surface area in comparison to the other catalysts. XRD and FESEM results revealed that CVD method prepared smaller particles on GNS compared to the other supports and resulted in the most dispersed metal particles on GNS according to H2-chemisorption results. The performance of Co/Al2O3 catalyst prepared by CVD method was compared with conventional 15 wt% Co/Al2O3 catalyst prepared by impregnation method. The Co/Al2O3 catalyst prepared with CVD method showed 5.3% higher %CO conversion and 2.1% lower C5+ selectivity as compared with the Co/Al2O3 catalysts prepared by impregnation method. Among three catalysts prepared by CVD, Co/GNS showed higher %CO conversion of 78.4% and C5+ selectivity of 70.3%. Co/γ-Al2O3 catalyst showed higher stability.
IS - 4
PB - OICC Press
KW - Activity, Chemical vapor deposition, Cobalt, Dispersion, Selectivity 
EN -