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Catalysts 2015, 5(2), 800-814; doi:10.3390/catal5020800

Non-Thermal Plasma Combined with Cordierite-Supported Mn and Fe Based Catalysts for the Decomposition of Diethylether

Department of Chemical and Biological Engineering, Jeju National University, Jeju 690-756, Korea
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Author to whom correspondence should be addressed.
Academic Editor: Jean-François Lamonier
Received: 3 February 2015 / Revised: 7 April 2015 / Accepted: 22 April 2015 / Published: 29 April 2015
(This article belongs to the Special Issue Catalytic Removal of Volatile Organic Compounds)
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Abstract

The removal of dilute diethylether (DEE, concentration: 150 ppm) from an air stream (flow rate: 1.0 L min−1) using non-thermal plasma combined with different cordierite-supported catalysts, including Mn, Fe, and mixed Mn-Fe oxides, was investigated. The experimental results showed that the decomposition of DEE occurred in a one-stage reactor without the positive synergy of plasma and supported catalysts, by which ca. 96% of DEE was removed at a specific input energy (SIE) of ca. 600 J L−1, except when the mixed Mn-Fe/cordierite was used. Among the catalysts that were examined, Mn-Fe/cordierite, the catalyst that was the most efficient at decomposing ozone was found to negatively affect the decomposition of DEE in the one-stage reactor. However, when it was utilized as a catalyst in the post-plasma stage of a two-part hybrid reactor, in which Mn/cordierite was directly exposed to the plasma, the reactor performance in terms of DEE decomposition efficiency was improved by more than 10% at low values of SIE compared to the efficiency that was achieved without Mn-Fe/cordierite. The ozone that was formed during the plasma stage and its subsequent catalytic dissociation during the post-plasma stage to produce atomic oxygen therefore played important roles in the removal of DEE. View Full-Text
Keywords: DBD plasma; one-stage arrangement; diethylether; Mn-Fe mixed oxides; cordierite honeycomb DBD plasma; one-stage arrangement; diethylether; Mn-Fe mixed oxides; cordierite honeycomb
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Trinh, Q.H.; Mok, Y.S. Non-Thermal Plasma Combined with Cordierite-Supported Mn and Fe Based Catalysts for the Decomposition of Diethylether. Catalysts 2015, 5, 800-814.

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