Hybrid Catalyst for the Selective Synthesis of Fuel Range Hydrocarbons by the Fischer–Tropsch Method1
R. E. Yakovenkoa, *, I. N. Zubkova, A. P. Savost’yanova, V. N. Soromotina, T. V. Krasnyakovab,
O. P. Papetaa, and S. A. Mitchenkoa, b
aPlatov South-Russian State Polytechnic University (NPI), Novocherkassk, 346428 Russia
bLitvinenko Institute of Physical Organic Chemistry and Coal Chemistry, Donetsk, 283114 Ukraine
Correspondence to: *е-mail: jakovenko39@gmail.com
1Abbreviations and designations: XRD analysis, X-ray diffraction analysis; BET, Brunauer–Emmett–Teller method; SEM, scanning electron microscopy; TEM, transmission electron microscopy; TPD, temperature-programmed desorption of ammonia and hydrogen; APG, associated petroleum gas; FTS, Fischer–Tropsch synthesis; HT, hydrotreating; GCCTM, Chevron’s Gas Conversion Catalysis technology; GHSV, gas hourly space velocity; R(Co), the degree of cobalt reduction; Ssp, specific surface area; d(Co0), particle size of cobalt Co0; and TOF, turnover frequency of reaction.
Received 4 June, 2020
Abstract—The results of the development of a hybrid catalyst for the one-pot synthesis of liquid hydrocarbons by the Fischer–Tropsch method are presented. The catalyst was synthesized by the mechanical mixing and molding of Co–Al2O3/SiO2, zeolite HZSM-5, and boehmite powders. The zeolite was promoted with palladium by ion exchange (1.0 wt %). The catalysts were characterized by X-ray diffraction analysis, BET, scanning and transmission electron spectroscopy, and temperature-programmed desorption of ammonia and hydrogen and tested at a temperature of 240°C, a pressure of 2.0 MPa, and a GHSV of 1000 h–1. The preparation method proposed makes it possible to obtain a hybrid catalyst with a stable structure and an average cobalt particle size of 8 nm; this catalyst exhibited high productivity and selectivity for the formation of liquid hydrocarbons from CO and H2.
Keywords: Fischer–Tropsch synthesis, hybrid catalyst, HZSM-5 zeolite, hydrocarbons, motor fuels, catalyst performance
DOI: 10.1134/S0023158421010122