Recent advances in catalytic decomposition of ozone

Li, Xiaotong; Ma, Jinzhu; He, Hong

doi:10.1016/j.jes.2020.03.058

Cited by 114 publications

(48 citation statements)

References 123 publications

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“…In addition, the larger specific surface area of Ce0.01Mn-AT may contribute to a wider surface exposure of oxygen vacancies. This could explain the high ozone conversion maintained in the presence of Ce0.01Mn-AT alongside the avoidance of the saturation of the oxygen vacancies sites, which was probably at the origin of the deactivation observed in the presence of Ce0.01Mn-400 [44,45].…”

Section: O3 Decomposition In Ce001mn-400 and Ce001mn-at Samples Using Non-thermal Plasma (Ntp) As Ozonermentioning

confidence: 96%

Post-Plasma Catalysis for Trichloroethylene Abatement with Ce-Doped Birnessite Downstream DC Corona Discharge Reactor

Abdallah

Giraudon²,

Bitar

et al. 2021

Catalysts

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Trichloroethylene (TCE) removal was investigated in a post-plasma catalysis (PPC) configuration in nearly dry air (RH = 0.7%) and moist air (RH = 15%), using, for non-thermal plasma (NTP), a 10-pin-to-plate negative DC corona discharge and, for PPC, Ce0.01Mn as a catalyst, calcined at 400 °C (Ce0.01Mn-400) or treated with nitric acid (Ce0.01Mn-AT). One of the key points was to take advantage of the ozone emitted from NTP as a potential source of active oxygen species for further oxidation, at a very low temperature (100 °C), of untreated TCE and of potential gaseous hazardous by-products from the NTP. The plasma-assisted Ce0.01Mn-AT catalyst presented the best CO2 yield in dry air, with minimization of the formation of gaseous chlorinated by-products. This result was attributed to the high level of oxygen vacancies with a higher amount of Mn3+, improved specific surface area and strong surface acidity. These features also allow the promotion of ozone decomposition efficiency. Both catalysts exhibited good stability towards chlorine. Ce0.01Mn-AT tested in moist air (RH = 15%) showed good stability as a function of time, indicating good water tolerance also.

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Section: O3 Decomposition In Ce001mn-400 and Ce001mn-at Samples Using Non-thermal Plasma (Ntp) As Ozonermentioning

confidence: 96%

Post-Plasma Catalysis for Trichloroethylene Abatement with Ce-Doped Birnessite Downstream DC Corona Discharge Reactor

Abdallah

Giraudon²,

Bitar

et al. 2021

Catalysts

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“…At this point, it was proposed that the Mn 3+ content seemed to play a key role during ozone decomposition. The degradation process of ozone catalyzed by noble metal and transition metal oxide catalysts is based on three steps [193]:…”

Section: [Zn]-k-oms-2 and [Zr]-k-oms-2mentioning

confidence: 99%

Recent Manganese Oxide Octahedral Molecular Sieves (OMS–2) with Isomorphically Substituted Cationic Dopants and Their Catalytic Applications

Sabaté

Sabater

2021

Catalysts

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The present report describes the structural and physical–chemical variations of the potassium manganese oxide mineral, α–MnO2, which is a specific manganese octahedral molecular sieve (OMS) named cryptomelane (K–OMS–2), with different transition metal cations. We will describe some frequently used synthesis methods to obtain isomorphic substituted materials [M]–K–OMS–2 by replacing the original manganese cationic species in a controlled way. It is important to note that one of the main effects of doping is related to electronic environmental changes, as well as to an increase of oxygen species mobility, which is ultimately related to the creation of new vacancies. Given the interest and the importance of these materials, here, we collect the most recent advances in [M]–K–OMS–2 oxides (M = Ag, Ce, Mo, V, Nb, W, In, Zr and Ru) that have appeared in the literature during the last ten years, leaving aside other metal–doped [M]–K–OMS–2 oxides that have already been treated in previous reviews. Besides showing the most important structural and physic-chemical features of these oxides, we will highlight their applications in the field of degradation of pollutants, fine chemistry and electrocatalysis, and will suggest potential alternative applications.

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“…In the AC-catalyzed ozonation process, many reactive oxygen species (ROS) are formed from the decomposition of O 3 , such as •OH, O 2 • − and 1 O 2 with a redox potential of 2.8 V, 1.35V and 2.22V, respectively (Li et al 2020). In the quenching experiment, two free radical scavengers, TBA and BQ, are added to eliminate •OH and O 2 • − (Sl et al 2019) in order to understand their unique contributions to the degradation of phenol by the RPB/O 3 /AC system.…”

Section: Free Radical Scavengersmentioning

confidence: 99%

“…In short, the high-gravity eld has the potential to intensify the heterogeneous catalytic ozonation (Anonymous et al 2010; Jiao et al 2010;Wu et al 2017). Li et al (2020) used RPB instead of a conventional reactor for FeOOH-catalyzed ozonation of nitrobenzene in aqueous solution, and the results showed that RPB as an effective gas-liquid reactor could improve the mass transfer rate and oxidative activity of O 3 . However, there have been few studies on AC-catalyzed ozonation for removal of phenol from wastewater in a high-gravity eld.…”

Section: Introductionmentioning

confidence: 99%

Removal of Phenol From Wastewater by High-Gravity Intensified Heterogeneous Catalytic Ozonation With Activated Carbon

zhang

Shao

Ding

et al. 2021

Preprint

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In this study, the high-gravity technique is used to intensify the heterogeneous catalytic ozonation with activated carbon (AC) as the catalyst for removal of phenol from wastewater in a rotating packed bed (RPB), and the effects of high-gravity factor, inlet O3 concentration, liquid-gas ratio and initial pH on the degradation and mineralization of phenol at room temperature are investigated. It is revealed that the degradation rate of phenol reaches 100% at 10 min and the removal rate of total organic carbon (TOC) reaches 91% at 40 min under the conditions of high-gravity factor β=40, inlet O3 concentration =90 mg·L-1, liquid flow rate =80 L·h-1 and initial pH=11. Compared with the bubbling reactor (BR)/O3/AC and RPB/O3 systems, the mineralization rate of phenol by the RPB/O3/AC system is increased by 24.78% and 34.77%, respectively. Free radical quenching experiments are performed using tertiary butanol (TBA) and benzoquinone(BQ) as scavengers of ·OH and O2·−, respectively. It is shown that the degradation and mineralization of phenol are respectively attributed to the direct ozonation and the indirect oxidation by ·OH generated from the decomposition of O3 adsorbed on AC surface. •OH and O2•− are also detected by electron paramagnetic resonance (EPR). Thus, it is concluded that AC-catalyzed ozonation and high gravity technique had a synergistic effect on •OH initiation, which in turn can significantly improve the degradation and mineralization of organic wastewater.

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Recent advances in catalytic decomposition of ozone

Cited by 114 publications

References 123 publications

Post-Plasma Catalysis for Trichloroethylene Abatement with Ce-Doped Birnessite Downstream DC Corona Discharge Reactor

Post-Plasma Catalysis for Trichloroethylene Abatement with Ce-Doped Birnessite Downstream DC Corona Discharge Reactor

Recent Manganese Oxide Octahedral Molecular Sieves (OMS–2) with Isomorphically Substituted Cationic Dopants and Their Catalytic Applications

Removal of Phenol From Wastewater by High-Gravity Intensified Heterogeneous Catalytic Ozonation With Activated Carbon

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