The hybrid metal-zeolite catalysts for Fischer – Tropsch synthesis to obtain C5–C18 hydrocarbon fraction

Hybrid metal-zeolite catalysts are prepared and modified with transition metals (Pd, Fe, Co, Ni) for the direct synthesis of hydrocarbons of С5–С18 of CO and H2. State of the active catalyst component (dispersion, surface area and the recovery of Co) was studied by temperature-programmed reduction and oxygen adsorption. The catalytic performance of the samples are identified. Tests were carried out in a continuous tubular reactor with a diameter of 1,3 cm at 2 MPa and a temperature from 210 to 250 °С on the catalyst fraction 0,1–0,2 mm, weigh of samples 2,5 cm3. The activity of the samples increases in the Co Fe < Ni. In order to optimize the composition of the catalyst system the catalyst characteristics with a variable nickel content of 2, 4, 6 and 8 wt.% were studied. The maximum yield of liquid hydrocarbons from CO and H2 (120 g/m3 synthesis gas) was obtained by using a catalyst containing 4 wt.% Ni. The Tests on the granules (1,5–3,5 mm) of the catalyst in the reactor with increased load (50 cm3) were held that is showed the possibility of its use in a pilot plant.

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