Effect of Carbon on the Adsorption Properties of a Co/MgAl2O4 Catalyst for Carbon Monoxide Hydrogenation

G. V. Pankina; Панкина Г. В.; A. N. Kharlanov; Харланов А. Н.; P. A. Chernavskii; Чернавский П. А.

doi:10.31857/S0044453723030214

Effect of Carbon on the Adsorption Properties of a Co/MgAl2O4 Catalyst for Carbon Monoxide Hydrogenation

Autores: Pankina G.V.¹, Kharlanov A.N.¹, Chernavskii P.A.¹
Afiliações:
1. Faculty of Chemistry, Moscow State University
Edição: Volume 97, Nº 3 (2023)
Páginas: 370-377
Seção: ХИМИЧЕСКАЯ КИНЕТИКА И КАТАЛИЗ
##submission.dateSubmitted##: 27.02.2025
##submission.datePublished##: 01.03.2023
URL: https://permmedjournal.ru/0044-4537/article/view/668796
DOI: https://doi.org/10.31857/S0044453723030214
EDN: https://elibrary.ru/DXWYXV
ID: 668796

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Resumo

A study is performed of cobalt/MgAl2O4 catalysts promoted with glucose at Co/C molar ratios of 16.5, 3.2, and 1.6 via sequential deposition and codeposition. Magnetometry and IR spectroscopy of adsorbed CO show that raising the content of carbon in the catalyst contributes to the reduction of cobalt, regardless of how Co is introduced. Infrared spectroscopy reveals the main adsorption sites are cobalt cations and metallic Co. A strong contribution from adsorption sites characteristic of large Co particles is observed in systems synthesized via codeposition. Adsorption sites attributed to Co2+ and Coδ+ are structurally more homogeneous than ones attributed to metallic Co.

Palavras-chave

glucose, supported Co catalysts, adsorption, promotion, magnesium–aluminum spinel, IR spectra, in situ magnetometry

Bibliografia

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