Effect of the Type of the Cobalt-Containing Component of a Composite Catalyst on the One-Stage Synthesis of Liquid Hydrocarbons from СО and Н2


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The effect of the type of the cobalt-containing component (Со-Al2O3/SiO2, Co-Re/Al2O3, and Co-Re/TiO2) of a composite catalyst on the combined synthesis and hydroconversion of hydrocarbons by the Fischer–Tropsch process are investigated. The catalytic properties of catalyst samples are studied in a flow reactor with a fixed catalyst layer at 2 MPa and GHSV of 1000 h–1 within a the temperature range of 240–280°С for 40–90 h of continuous operation. The highest values of output and selectivity to C5+ hydrocarbons are obtained for composite catalyst Со-Al2O3/SiO2(35%)/ZSM-5(30%)/Al2O3(30%) at a temperature of 240°C and are 106 kg/(\({\text{m}}_{{{\text{cat}}}}^{3}\) h) and 67.1%, respectively. It is shown that using Co-Re/Al2O3 instead of Со-Al2O3/SiO2 catalyst produces comparable values of catalytic activity, but considerably fewer unsaturated hydrocarbons are found in the products of synthesis. Using Co-Re/TiO2 catalyst and raising the temperature (to 280°С) shifts the molecular weight distribution of the products of synthesis toward the formation of a gasoline fraction. It is found that the rate of catalyst deactivation grows in the order Со-Al2O3/SiO2 > Co-Re/Al2O3 > Co-Re/TiO2.

作者简介

R. Yakovenko

Platov South Russian State Polytechnic University (NPI)

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Email: jakovenko39@gmail.com
俄罗斯联邦, Novocherkassk, 346400

I. Zubkov

Platov South Russian State Polytechnic University (NPI)

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Email: 71650021.qwe@mail.ru
俄罗斯联邦, Novocherkassk, 346400

G. Narochnyi

Platov South Russian State Polytechnic University (NPI)

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Email: narochgb@bk.ru
俄罗斯联邦, Novocherkassk, 346400

S. Nekroenko

Platov South Russian State Polytechnic University (NPI)

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Email: lananekroenko@gmail.com
俄罗斯联邦, Novocherkassk, 346400

A. Savost’yanov

Platov South Russian State Polytechnic University (NPI)

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Email: savostap@mail.ru
俄罗斯联邦, Novocherkassk, 346400

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