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RAS Chemistry & Material ScienceКинетика и катализ Kinetics and Catalysis

  • ISSN (Print) 0453-8811
  • ISSN (Online) 3034-5413

Influence of the composition and preparation method of KFeCo/γ-AlO catalysts on their catalytic behaviour in the hydrocarbons synthesis from CO

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PII
S3034541325060048-1
DOI
10.7868/S3034541325060048
Publication type
Article
Status
Published
Authors
E.V. Dokuchits
  • Affiliation: Boreskov Institute of Catalysis SB RAS
G.I. Maltsev
  • Affiliation: Boreskov Institute of Catalysis SB RAS
A.V. Ishchenko
  • Affiliation: Boreskov Institute of Catalysis SB RAS
T.P. Minyukova
  • Affiliation: Boreskov Institute of Catalysis SB RAS
Volume/ Edition
Volume 66 / Issue number 6
Pages
527-540
Abstract
A series of iron-containing catalysts supported on γ-AlO and modified with potassium and cobalt were studied in the reaction of hydrocarbon synthesis from CO. Samples from different series differed in the deposition method and component ratios. When preparing catalysts modified with cobalt and potassium by co-impregnation in excess of impregnation solution, an uneven distribution of cobalt and iron cations was observed on the catalyst surface. Applying iron and modifiers by consecutive impregnation in excess of impregnation solution with intermediate heat treatment in air allows for a uniform distribution of cobalt and iron cations. This leads to a significant increase in selectivity for C hydrocarbons formation and a decrease in methane selectivity. For catalysts prepared by the consecutive impregnation method, the optimal cobalt-to-iron ratio was found to be / ≈ 0.35–0.45, along with an iron active component content of ω ≈ 4%.
Keywords
восстановление диоксида углерода синтез углеводородов железосодержащие катализаторы метод пропитки
Date of publication
24.10.2025
Year of publication
2025
Number of purchasers
0
Views
42

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