Performance of an Ozone Decomposition Catalyst in Hybrid Plasma Reactors for Volatile Organic Compound Removal

Ogata, Atsushi; Saito, Keiichi; Kim, Hyun‐Ha; Sugasawa, Masami; Aritani, Hirofumi; Einaga, Hisahiro

doi:10.1007/s11090-009-9206-y

Cited by 45 publications

(11 citation statements)

References 26 publications

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“…Some catalyst exhibits better performance in a two-stage configuration than in a single-stage configuration. There is in fair agreement with several independent works that ozone decomposition catalysts (MnO 2 -CuO/TiO 2 , Mn 2 O 3 , Ba-CuO-Cr 2 O 3 /Al 2 O 3 ) favors two-stage stage configuration [52][53][54]. Beside the plasma expansion by the metal nanoparticle loading, an interesting way to generate plasma inside honeycomb configuration has been proposed and demonstrated.…”

Section: -P9supporting

confidence: 88%

Nonthermal plasma activates catalyst: from current understanding and future prospects

Kim

Ogata

2011

Eur. Phys. J. Appl. Phys.

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Abstract. Combination of two old-yet-new technologies (plasma and catalyst) is getting attentions for the advanced processes in 21 century. This paper reports the complementary combination of atmospheric pressure nonthermal plasma with catalyst for the air pollution control application. The most important feature of this complementary combination is that plasma enables catalyst to work even at room temperature. Up-to-date data on catalyst screening for the cycled system will be given in terms of enhancement factor and adsorption capacity. Visual observation using ICCD camera was applied to study how discharge plasma interacts with catalyst at atmospheric-pressure and ambient temperature.

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Section: -P9supporting

confidence: 88%

Nonthermal plasma activates catalyst: from current understanding and future prospects

Kim

Ogata

2011

Eur. Phys. J. Appl. Phys.

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“…In our preliminary experiment, ozone was only significantly decomposed in the gas phase above 150 °C; however, as seen in Figure 6a, the reactor temperature did not exceed 70 °C, indicating the negligible thermal decomposition of ozone. The occurrence of a zero ozone concentration at high input energies was also reported elsewhere [33,39]. It was proposed that O3 is consumed by NO, which is favorably formed at high SIE values to produce NO2, which subsequently reacts with atomic oxygen to regenerate NO [40,41].…”

Section: Dee Decomposition In a One-stage Reactormentioning

confidence: 53%

“…The low DEE decomposition efficiency with Mn-Fe/cordierite suggested that in plasma, besides active short-lived species, ozone itself played a significant role in the reaction of DEE. In an earlier study, Ogata et al [33] also reported that the use of a Cu-Cr catalyst to dissociate ozone into active atomic oxygen species was not effective for the reaction under plasma discharge, for which the extent of the decomposition of toluene and dichloromethane in a one-stage reactor was almost the same or even worse (for an increasing amount of catalyst) than in a conventional plasma reactor. These authors concluded that, for the single-stage combination (i.e., the one-stage arrangement), the ozone decomposition property of the catalysts was not important.…”

Section: Dee Decomposition In a One-stage Reactormentioning

confidence: 99%

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

Trinh

Mok

2015

Catalysts

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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.

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“…Knowing that the photocatalytic reactor does not produce ozone, this behavior can be explained by the fact that produced ozone is decomposed when UV+TiO2 was introduced into the post-combined system [12]. Since some studies show that the conversion of ozone under different conditions was UV+TiO2 > TiO2 > UV [ 26].…”

Section: Sequential Coupling Of Combined System and Photocatalysismentioning

confidence: 99%

Study of synergetic effect by surface discharge plasma/TiO2 combination for indoor air treatment: Sequential and continuous configurations at pilot scale

Assadi

Bouzaza

Wolbert

2015

Journal of Photochemistry and Photobiology A: Chemistry

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a b s t r a c tPolyactive ® membranes show promising properties for CO 2 separation from flue gas. An investigation of different module types using Polyactive ® membranes was carried out for this paper. A test rig was built to explore, amongst other process parameters, the pressure drop in envelope-type membrane modules. The experimental data and simulation results were compared with quite good consistency. This validation enabled further simulations for different modules in a virtual pilot plant configuration. Applying the data from the pilot plant simulation to a reference power plant, the scaled-up cascaded membrane system was analyzed using different membrane modules. Considering the required membrane area, energy consumption and pressure drop in different modules, a counter-current membrane module configuration exhibited the best performance and had a marginal advantage in comparison with the chemical absorption process.

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Performance of an Ozone Decomposition Catalyst in Hybrid Plasma Reactors for Volatile Organic Compound Removal

Cited by 45 publications

References 26 publications

Nonthermal plasma activates catalyst: from current understanding and future prospects

Nonthermal plasma activates catalyst: from current understanding and future prospects

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

Study of synergetic effect by surface discharge plasma/TiO2 combination for indoor air treatment: Sequential and continuous configurations at pilot scale

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