Journal ArticleDOI
Performance of doped Pt/TiO2 (W6+) catalysts for combustion of volatile organic compounds (VOCs)
TLDR
In this article, it was found that doping of the TiO2 support with W6+ cations has a positive effect on the activity of Pt catalysts for benzene and ethylacetate oxidation.Abstract:
The oxidation of benzene and ethylacetate, present in trace amounts in air, over Pt supported on γ-Al2O3, SiO2, TiO2 and TiO2 (W6+) carriers has been studied. It was found that doping of the TiO2 support with W6+ cations has a positive effect on the activity of Pt catalysts for benzene and ethylacetate oxidation. A maximum in activity enhancement has been observed at a W6+ content of 0.45 at% in the TiO2 support. The Pt/TiO2 (0.45 at% W6+) catalyst is over two orders of magnitude more active than the Pt/γ-Al2O3 catalyst in the case of ethylacetate oxidation and an order of magnitude more active in the case of benzene oxidation. Doping of TiO2 with W6+ cations enhances its activity for ethylacetate degradation towards smaller organic intermediates, such as ethanol, acetic acid and ethylene, and it also affects product distribution. The enhanced activity of the Pt/TiO2 (W6+) catalysts is attributed to complementary bifunctional steps occuring on sites offered by Pt metal and by the support. During oxidation of benzene-ethylacetate-water mixtures, benzene oxidation is strongly suppressed in the presence of ethylacetate, while water acts as an inhibitor for both volatile organic compounds (VOC) oxidations.read more
Citations
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Journal ArticleDOI
Recent Advances in the Catalytic Oxidation of Volatile Organic Compounds: A Review Based on Pollutant Sorts and Sources.
TL;DR: This Review systematically documents the progresses and developments made in the understanding and design of heterogeneous catalysts for VOC oxidation over the past two decades and addresses in detail how catalytic performance is often drastically affected by the pollutant sources and reaction conditions.
Journal ArticleDOI
Catalytic oxidation of volatile organic compounds (VOCs) – A review
TL;DR: In this article, a review discusses recent developments in catalytic systems for the destruction of volatile organic compounds (VOCs) and their sources of emission, mechanisms of catalytic destruction, the causes of catalyst deactivation, and catalyst regeneration methods.
Journal ArticleDOI
Catalytic oxidation of volatile organic compounds on supported noble metals
TL;DR: In this article, a review of the most used noble metals catalysts for not halogenated VOCs is presented, and the calculated reaction order with respect to VOC and oxygen as well as the proposed reaction mechanisms are addressed.
Journal ArticleDOI
Abatement of various types of VOCs by adsorption/catalytic oxidation: A review
TL;DR: In this article, the development of efficient adsorbents and catalysts for VOCs with varied nature are discussed, and the perspectives on the potential future directions of the adsorptive removal and catalytic oxidation of VOC are given.
Journal ArticleDOI
VOC oxidation over CuO–CeO2 catalysts prepared by a combustion method
TL;DR: In this paper, a urea combustion method was used to evaluate the performance of a mixture of CuO and CeO 2 catalysts in the oxidation of ethanol, ethyl acetate and toluene.
References
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Journal ArticleDOI
Charge Transfer in Metal Catalysts Supported on Doped TiO2: A Theoretical Approach Based on Metal–Semiconductor Contact Theory
TL;DR: In this article, a theoretical analysis of charge transfer in metal catalysts supported on a doped TiO2carrier is presented, which is based on the metal-semiconductor contact theory and has been used to calculate the amount of charge transferred to supported metal crystallites.
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Catalytic incineration for odour abatement and VOC destruction
Jacques Hermia,S. Vigneron +1 more
TL;DR: In this article, the authors developed a simple modeling to estimate the pay-back time of the catalysts to one year on the basis of energy savings, the range of VOC concentrations being 2-5 g/Nrn6.
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Kinetics and Selectivity of Deep Catalytic Oxidation of n-Hexane and Benzene
TL;DR: In this article, a fundamental study was carried out for low-temperature deep oxidation of n-hexane and benzene over a 0.1 % Pt, 3% Ni/γ-Al2O3 catalyst.
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Destruction of volatile organic compounds via catalytic incineration
TL;DR: In this article, the effect of catalytic incinerator design and operation on the destruction of specific volatile organic compounds (VOC), both singly and in mixtures, was investigated.
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Deep catalytic oxidation of aromatic hydrocarbon mixtures : reciprocal inhibition effects and kinetics
TL;DR: In this paper, the deep catalytic oxidation kinetics of different aromatic hydrocarbons, in lean mixtures, over a Pt catalyst has been investigated; the reactivity increases in the order benzene > toluene > ethylbenzene > o-xylene > styrene.