Catalysts: Special Issue on Plasma-Catalysis for Environmental and Energy-Related Applications

Doping with other metals or metal oxides (alkali and alkaline earth metals—K and Mg, transition metals—Co and Mn, rare earth metals—La and Ce and their oxides) may prove beneficial, producing various effects such as enhancing resistance to carbon formation and even removing carbonaceous deposits, im...

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Published in:Catalysts Vol. 11; no. 12; p. 1439
Main Authors: Magureanu, Monica, Bradu, Corina
Format: Journal Article
Language:English
Published: Basel MDPI AG 01.12.2021
Subjects:
Acetaldehyde
Acetic acid
Adsorption
Alkaline earth metals
By products
Byproducts
Carbon dioxide
Carbon monoxide
Catalysis
Catalysts
Chemical reactions
Decomposition
Decomposition reactions
Degradation
Energy efficiency
Environmental impact
Formic acid
Fourier transforms
Gases
Magnesium
Metal oxides
Metals
Methyl formate
Mineralization
Naphthalene
Nickel
Nitromethane
Oxidation
Plasma
Pollutants
Rare earth elements
Transition metals
Vapor phases
VOCs
Volatile organic compounds
ISSN:2073-4344, 2073-4344
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Summary:Doping with other metals or metal oxides (alkali and alkaline earth metals—K and Mg, transition metals—Co and Mn, rare earth metals—La and Ce and their oxides) may prove beneficial, producing various effects such as enhancing resistance to carbon formation and even removing carbonaceous deposits, improving the Ni dispersion and inhibiting aggregation of Ni particles, strengthening the metal-support interaction, enhancing reactant adsorption, changing discharge characteristics as to increase the plasma area etc., ultimately leading to better plasma-catalyst synergy, higher CO2 and CH4 conversion and improved products distribution. The authors identified carbon monoxide, carbon dioxide, water and formic acid as main products in the gas phase of naphthalene decomposition, as well as several other complex gaseous and solid by-products, indicating incomplete oxidation of the target compound. Other organic by-products, such as methanol, acetic acid, methyl formate, methyl acetate, 1,2-ethanediol mono- and di- formate, were identified in the gas phase in both reactors as a result of the target compound decomposition, while acetone and nitromethane were only detected in the plasma-catalytic process. Detection of the carbonaceous intermediates provided more detailed information on acetaldehyde degradation in the plasma catalytic system by the interaction of adsorbed molecules with plasma-generated species and/or by-products of acetaldehyde decomposition in the gas phase. [...]the main degradation pathways could be identified.
Bibliography:SourceType-Scholarly Journals-1
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ObjectType-Editorial-2
ObjectType-Commentary-1
ISSN:2073-4344
2073-4344
DOI:10.3390/catal11121439