Synthesis of Low-Pour-Point Diesel Fuel in the Presence of a Composite Cobalt-Containing Catalyst
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Production of synthetic diesel fuel by the Fischer–Tropsch (FT) method in the presence of a composite catalyst prepared by mechanically mixing 35 wt % Co/SiO2, 30 wt % HZSM-5, and 30 wt % Al2O3 has been studied. The catalyst has been characterized by the H2 TPR, H2 TPD, NH3 TPD, XRD, SEM, and TEM methods. Catalytic properties have been studied in a fixed-bed flow reactor at 2 MPa and a GHSV of 1000 h–1 in the temperature range of 230–250°C. The highest efficiency and C5+ HC selectivity values of 130 kg/(m3 h) and 72.5%, respectively, are achieved at 250°C. The low-temperature properties of the synthetic diesel fuel meet the requirements for winter diesel.
KeywordsFischer–Tropsch synthesis composite catalyst winter diesel fuel HZSM-5 zeolite
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