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Open AccessArticle

The Role of Ozone in the Reaction Mechanism of a Bare Zeolite-Plasma Hybrid System

National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba 305-8569, Japan
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Academic Editor: Jean-François Lamonier
Catalysts 2015, 5(2), 838-850; https://doi.org/10.3390/catal5020838
Received: 19 February 2015 / Revised: 28 April 2015 / Accepted: 4 May 2015 / Published: 11 May 2015
(This article belongs to the Special Issue Catalytic Removal of Volatile Organic Compounds)
We investigated the reaction mechanism of a metal-unloaded zeolite-plasma hybrid system for decomposition of toluene at room temperature. Short-lived radicals and fast electrons did not contribute substantially to the reaction mechanism of toluene decomposition in the zeolite-plasma hybrid system. The main factor enhancing the reaction mechanism was gas-phase O3 directly reacting with toluene adsorbed onto the zeolite (the Eley-Rideal mechanism). CO2 selectivity was not improved by using H-Y zeolite due to its low ability to retain the active oxygen species formed by O3. The gas-phase O3 reacted with adsorbed toluene to form a ring cleavage intermediate that was slowly converted into formic acid. The decomposition rate of formic acid was much lower than that of toluene on the H-Y surface. View Full-Text
Keywords: plasma; hybrid system; zeolite; VOC plasma; hybrid system; zeolite; VOC
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Teramoto, Y.; Kim, H.-H.; Negishi, N.; Ogata, A. The Role of Ozone in the Reaction Mechanism of a Bare Zeolite-Plasma Hybrid System. Catalysts 2015, 5, 838-850.

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Catalysts, EISSN 2073-4344, Published by MDPI AG
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