Efficient degradation of chlorobenzene in a non-thermal plasma catalytic reactor supported on CeO 2 /HZSM-5 catalysts

Jiang, Liying; Nie, Guofeng; Zhu, Rongshu; Wang, Jiade; Chen, Jianmeng; Mao, Yubo; Cheng, Zhuowei; Anderson, Willam A.

doi:10.1016/j.jes.2016.07.014

Cited by 50 publications

(24 citation statements)

References 43 publications

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“…Wallis et al [123] investigated the combination of zeolites (such as HZSM-5, calcined HZSM-5, NaZSM-5, NaA, and NaX) and NTP discharge for the destruction of DCM in air. Among the different zeolites tested, HZSM-5 showed the highest DCM destruction efficiency of 36%; whereas the calcined HZSM-5 exhibited lower conversion due to the reduction in Brønsted acid sites as these sites play an important role in the oxidation of chlorinated hydrocarbons [97,124,125]. The HZSM-5 did not exhibit any reduction in NO x concentration; whereas calcined HZSM-5 reduces the production of NO x by 15%.…”

Section: O 3 (A Mixture Of 2 MM Batio 3 and 1 Mm Al 2 O 3 ) And Batiomentioning

confidence: 97%

The Use of Zeolites for VOCs Abatement by Combining Non-Thermal Plasma, Adsorption, and/or Catalysis: A Review

et al. 2019

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Non-thermal plasma technique can be easily integrated with catalysis and adsorption for environmental applications such as volatile organic compound (VOC) abatement to overcome the shortcomings of individual techniques. This review attempts to give an overview of the literature about the application of zeolite as adsorbent and catalyst in combination with non-thermal plasma for VOC abatement in flue gas. The superior surface properties of zeolites in combination with its excellent catalytic properties obtained by metal loading make it an ideal packing material for adsorption plasma catalytic removal of VOCs. This work highlights the use of zeolites for cyclic adsorption plasma catalysis in order to reduce the energy cost to decompose per VOC molecule and to regenerate zeolites via plasma.

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Section: O 3 (A Mixture Of 2 MM Batio 3 and 1 Mm Al 2 O 3 ) And Batiomentioning

confidence: 97%

The Use of Zeolites for VOCs Abatement by Combining Non-Thermal Plasma, Adsorption, and/or Catalysis: A Review

et al. 2019

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“…The reactants and products were analyzed on-line with a gas chromatography (GC 2010 Plus, Shimadzu, Kyoto, Japan) equipped with a flame ionization detector (FID). The conversion of chlorobenzene was calculated using Equation (1).…”

Section: Catalytic Evaluationmentioning

confidence: 99%

“…Reducing volatile organic compounds (VOCs) emissions has been a major challenge for manufacturers and researchers [1,2]. In comparison to other VOCs, chlorinated volatile organic compounds (CVOCs) are more toxic and difficult to remove from the flue gas [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Catalytic Oxidation of Chlorobenzene over Ruthenium-Ceria Bimetallic Catalysts

et al. 2018

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Abstract:A series of Ru-based mono and bimetallic materials were prepared and evaluated in the catalytic oxidation of chlorobenzene. Among the different Ru-based catalysts, 1Ru/TiO 2 (P25) was the most active catalyst and contributed the lowest complete oxidation temperature, suggesting that commercial P25 TiO 2 was the best support for Ru catalysts. After ceria oxides were introduced into the Ru catalytic system, the catalytic activity of 1Ru-5Ce/TiO 2 (Rutile) dramatically improved and that of P25 supported catalysts was decreased. Comparing the chlorobenzene consumption rates for 1Ru/TiO 2 and 1Ru-5Ce/TiO 2 at 280 • C, it could be concluded that monometallic Ru catalytic system was appropriate for P25 support, and the Ru-Ce bimetallic catalytic system was suitable for the rutile TiO 2 support. At 280 • C, for 1Ru-5Ce/TiO 2 (Rutile) and 1Ru-5Ce/TiO 2 (P25), the chlorobenzene conversion was stabilized at approximately 91% and 86%, respectively. According to the physicochemical properties of the catalysts as characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), and Hydrogen temperature programmed reduction (H 2 -TPR), it can be concluded that (a) electrophilic O ads species play an important role in VOCs oxidation; (b) abundant RuO 2 nanoparticles on the surface of 1Ru-5Ce/TiO 2 (Rutile) result in higher catalytic activity and stability; and (c) dispersion is not the major factor for the catalytic activity, rather the unique structure greatly facilitated the catalytic activity and stability.

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“…Nevertheless, plasma alone has some drawbacks including the formation of some unwanted byproducts (mainly ozone and nitrogen oxides), low selectivity to CO 2 and high energy consumption. To improve the conversion of VOCs and byproducts, a combination of NTP and catalysis has been proposed and employed . Despite the improvement in the CO 2 selectivity and amount of byproducts formed using NTP/catalysis, the energy cost is still unsatisfactory because of the very large amount of energy consumed during continuous discharge.…”

Section: Introductionmentioning

confidence: 99%

“…To improve the conversion of VOCs and byproducts, a combination of NTP and catalysis has been proposed and employed. 6,7 Despite the improvement in the CO 2 selectivity and amount of byproducts formed using NTP/catalysis, the energy cost is still unsatisfactory because of the very large amount of energy consumed during continuous discharge. Recently, a novel sequential adsorption-plasma oxidation system has been explored to further improve the energy efficiency.…”

Section: Introductionmentioning

confidence: 99%

Removal of chlorobenzene using a sequential adsorption–plasma catalytic system over Ag‐, Ce‐ and Mn‐modified activated carbon catalysts

Jiang

Cao

Chen

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND A dielectric barrier discharge reactor coupled with a series of activated carbon (AC) catalysts was applied to remove low concentrations of chlorobenzene. The catalysts were prepared via an impregnation method and their adsorption capacity and plasma‐catalytic ability examined in a sequential adsorption–plasma oxidation process. RESULTS Ag/AC had the longest breakthrough time and highest breakthrough capacity among the catalysts studied. At the discharge stage, the Ag/AC catalyst had the highest CO2 yield, chlorobenzene mineralization rate and carbon balance, and the lowest emission of chlorobenzene when compared with the other catalysts under the same conditions. However, the Ag/AC catalyst exhibited the worst reducing ozone generation performance, while the Mn/AC catalyst showed the best ozone decomposition ability. The organic intermediates produced using Ag/AC and Ce/AC were simpler and in lower concentrations than those formed using Mn/AC. The adsorption capacity and catalytic activity of the Ag/AC catalyst showed no obvious decrease after five cycles. Fourier transform infrared and scanning electron microscopy–energy dispersive spectroscopy analyses after the reaction showed that some nitrogen organic intermediates and chlorine substances produced via the degradation of chlorobenzene were adsorbed onto the catalyst surface. CONCLUSIONS Ag/AC exhibited a longer breakthrough time, higher breakthrough capacity, higher CO2 yield, less chlorobenzene emission and better carbon balance when compared with the other catalysts. © 2019 Society of Chemical Industry

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Efficient degradation of chlorobenzene in a non-thermal plasma catalytic reactor supported on CeO 2 /HZSM-5 catalysts

Cited by 50 publications

References 43 publications

The Use of Zeolites for VOCs Abatement by Combining Non-Thermal Plasma, Adsorption, and/or Catalysis: A Review

The Use of Zeolites for VOCs Abatement by Combining Non-Thermal Plasma, Adsorption, and/or Catalysis: A Review

Catalytic Oxidation of Chlorobenzene over Ruthenium-Ceria Bimetallic Catalysts

Removal of chlorobenzene using a sequential adsorption–plasma catalytic system over Ag‐, Ce‐ and Mn‐modified activated carbon catalysts

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