Hydrothermal deposition as a novel method for the preparation of Co–Mn mixed oxide catalysts supported on stainless steel meshes: application to VOC oxidation

The aim of this work was to develop a novel method for the preparation of structured Co–Mn mixed oxide catalysts: deposition on stainless steel meshes by hydrothermal synthesis. The use of meshes enabled the deposition of a thin layer of the active phase, which significantly suppressed the influence...

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Vydáno v:Environmental science and pollution research international Ročník 29; číslo 4; s. 5172 - 5183
Hlavní autoři: Topka, Pavel, Jirátová, Květuše, Dvořáková, Michaela, Balabánová, Jana, Koštejn, Martin, Kovanda, František
Médium: Journal Article
Jazyk:angličtina
Vydáno: Berlin/Heidelberg Springer Berlin Heidelberg 01.01.2022
Springer Nature B.V
Témata:
Aluminum
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Catalysis
Catalysts
Catalytic activity
Deposition
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental science
Ethanol
Manganese
Oxidation
Oxidation-Reduction
Oxides
Oxygen
Redox properties
Research Article
Stainless Steel
Stainless steels
Vacancies
Volatile Organic Compounds
Waste Water Technology
Water Management
Water Pollution Control
Volatile organic compounds
Stainless steel meshes
Ethanol total oxidation
Structured catalysts
Cobalt–manganese mixed oxides
Hydrothermal reaction
ISSN:0944-1344, 1614-7499, 1614-7499
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Shrnutí:The aim of this work was to develop a novel method for the preparation of structured Co–Mn mixed oxide catalysts: deposition on stainless steel meshes by hydrothermal synthesis. The use of meshes enabled the deposition of a thin layer of the active phase, which significantly suppressed the influence of internal diffusion. Consequently, the prepared catalysts exhibited from 48 to 114 times higher catalytic activity in ethanol oxidation than the commercial pelleted Co–Mn–Al catalyst. Moreover, we have shown that their catalytic activity correlated with the proportion of surface oxygen vacancies determined by XPS. Finally, the outstanding activity of the catalyst with Co:Mn ratio of 0.5 was ascribed to the mutual effect of high number of oxygen vacancies and exceptional redox properties.
Bibliografie:ObjectType-Article-1
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ISSN:0944-1344
1614-7499
1614-7499
DOI:10.1007/s11356-021-15906-y