Dielectric barrier discharge plasma modified Pt/CeO2 catalysts for toluene oxidation: Effect of discharge time

Wang, Bangfen; Wang, Ni; Sun, Yueming; Xiao, Hailin; Fu, Mingli; Li, Shuhua; Hong, Liang; Zhang, Qiao; Ye, Daiqi

doi:10.1016/j.apsusc.2022.156162

Cited by 10 publications

(4 citation statements)

References 47 publications

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“…Only a quite weak reduction peak at 480 °C is observed for the Pt/ZSM-5 catalyst attributed to the reduction of Si–O strong coordinated Pt species in the ZSM-5 zeolite. While an obvious reduction peak at 97 °C occurs in the profile of Pt/CeTi catalyst which is assigned to the reduction of the interface Pt-[O x ]-Ce species as well as some layers in the bulk and surface oxygen species of CeO 2 caused by the hydrogen spillover from Pt to CeO 2 –TiO 2 mixed oxides. ,,− Different from Pt/ZSM-5 and Pt/CeTi catalysts, three reduction peaks (peaks α, β, and γ) are presented over the Pt–CeTi/ZSM-5 catalysts. The negative reduction peak α is assigned to the decomposition of PtH 2 species .…”

Section: Resultsmentioning

confidence: 96%

Synergistic Effect of ZSM-5 Zeolite in Pt–CeO₂–TiO₂/ZSM-5 Catalysts for Highly Efficient Catalytic Oxidation of VOCs

Shi

Kong

Wan

et al. 2023

Ind. Eng. Chem. Res.

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A series of Pt−CeTi/ZSM-5 catalysts (0.5 wt % Pt) with different CeO 2 −TiO 2 /ZSM-5 mass ratios were synthesized and used for the catalytic oxidation of 1,2-dichloroethane and benzene. The results reveal that the strong Pt/CeO 2 −TiO 2 interaction can be evidently enhanced by introducing proper amounts of CeO 2 −TiO 2 mixed oxides, resulting in the improvement of Pt dispersion and redox properties as well as the production of more defective oxygen and Pt 2+ species. The synergistic effect between abundant ZSM-5 acid sites (especially strong acid sites) and strong Pt/CeO 2 −TiO 2 oxidizing sites facilitates the deep oxidation of benzene, intermediates, and byproducts generated from the 1,2-dichloroethane oxidation process at lower temperature. Among the catalysts, Pt−CeTi/ZSM-5(1/10) with the CeO 2 −TiO 2 /ZSM-5 mass ratio of 1/10 exhibits the greatest activity for benzene and 1,2-dichloroethane oxidation, showing the T 90% of 145 and 245 °C, respectively. Moreover, the catalyst also possesses satisfactory adaptability for the oxidation of various VOCs and durability for 1,2-dichloroethane oxidation.

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Section: Resultsmentioning

confidence: 96%

Synergistic Effect of ZSM-5 Zeolite in Pt–CeO₂–TiO₂/ZSM-5 Catalysts for Highly Efficient Catalytic Oxidation of VOCs

Shi

Kong

Wan

et al. 2023

Ind. Eng. Chem. Res.

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“…For Pt-CZO/Cu-SSZ-13, the initial reduction peak at ∼137 °C is attributed to the reduction of PtO x and Pt–O–Ce on the surface of CZO. The subsequent reduction peak centered at around 200 °C is associated with the reduction of subsurface Pt–O–Ce in CZO, indicating a strong metal interaction (SMI) between Pt species and CZO. , Furthermore, the peak at ∼510 °C shifts to a lower temperature, indicating that the introduction of Pt species increases the reactivity of lattice oxygen in CZO, which should be beneficial for the NH 3 –SCR reaction activity.…”

Section: Resultsmentioning

confidence: 99%

Atomically Dispersed Pt-Triggered CZO/Cu-SSZ-13 Coupling Catalyst for the Efficient Low-Temperature Selective Catalytic Reduction of NO_x

Jia,

Shao,

et al. 2024

ACS EST Eng.

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In this study, an atomically dispersed Pt-loaded Ce 0.6 Zr 0.4 O 2 / Cu-SSZ-13 (Pt-CZO/Cu-SSZ-13) coupling catalyst was fabricated by a facile grinding strategy, and its structure and catalytic performance for the selective catalytic reduction (SCR) of NO x by NH 3 were systematically investigated. The results reveal that the resulting Pt-CZO/Cu-SSZ-13 shows outstanding catalytic activity, achieving almost complete conversion of NO x at 145 °C, notably lower as compared with that of Cu-SSZ-13 with approximately 100% NO x conversion at 200 °C. The reason should be originated from the coexistence of Pt species in both single-atom and nanocluster forms, which not only significantly enhance the reactivity of lattice oxygen in CZO but also considerably increase the number of Brønsted acid sites. Both of these factors coordinately aid the adsorption and thereafter the activation of NO x and NH 3 , and then promote the NH 3 − SCR activity of the Pt-CZO/Cu-SSZ-13 coupling sample noticeably at the low-temperature range. This study introduces a viable approach to address the pressing issue of NO x emissions during the idle and cold-start phases of diesel engines.

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“…It is also worth mentioning that most of the highly efficient Ni catalysts contained CeO 2 in the catalyst structure to some degree. Wang et al [95] hypothesised that the effectiveness of CeO 2 is associated with its high dielectric constant and unique oxygen storage capacity. Figure 7a and b also indicate that increasing the SEI tends to decrease the CO 2 conversion and methane production process efficiency.…”

Section: Energy Efficiency Calculationmentioning

confidence: 99%

Recent Trends in Plasma-Assisted CO2 Methanation: A Critical Review of Recent Studies

Ullah,

Gao,

Dou

et al. 2023

Plasma Chem Plasma Process

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In recent years, enormous efforts have been devoted to alleviating global energy demand and the climate crisis. This has instigated the search for alternative energy sources with a reduced carbon footprint. Catalytic hydrogenation of CO2 to CH4, known as the methanation reaction, is a pathway to utilise CO2 and renewable hydrogen simultaneously. However, owing to the high stability of CO2 and thermodynamic limitations at higher temperatures, the methanation process is energy intensive. Non-thermal plasma technology has recently emerged as a promising approach to lowering the activation temperature of CO2. The application of a plasma coupled with catalytic materials allows the methanation reaction to occur at or near ambient conditions, with dielectric barrier discharges providing superior performance. The review considers the various catalytic materials applied for plasma-assisted catalytic CO2 methanation and assesses CO2 conversion, CH4 yield and fuel production efficiency obtained. The importance of reactor designs and process parameters are discussed in detail. The possible reaction pathways are considered based on in-situ and other diagnostics and modelling studies. Finally, a perspective on current barriers and opportunities for advances in non-thermal plasma technology for CO2 methanation is presented.

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Dielectric barrier discharge plasma modified Pt/CeO2 catalysts for toluene oxidation: Effect of discharge time

Cited by 10 publications

References 47 publications

Synergistic Effect of ZSM-5 Zeolite in Pt–CeO₂–TiO₂/ZSM-5 Catalysts for Highly Efficient Catalytic Oxidation of VOCs

Synergistic Effect of ZSM-5 Zeolite in Pt–CeO₂–TiO₂/ZSM-5 Catalysts for Highly Efficient Catalytic Oxidation of VOCs

Atomically Dispersed Pt-Triggered CZO/Cu-SSZ-13 Coupling Catalyst for the Efficient Low-Temperature Selective Catalytic Reduction of NO_x

Recent Trends in Plasma-Assisted CO2 Methanation: A Critical Review of Recent Studies

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Dielectric barrier discharge plasma modified Pt/CeO2 catalysts for toluene oxidation: Effect of discharge time

Cited by 10 publications

References 47 publications

Synergistic Effect of ZSM-5 Zeolite in Pt–CeO2–TiO2/ZSM-5 Catalysts for Highly Efficient Catalytic Oxidation of VOCs

Synergistic Effect of ZSM-5 Zeolite in Pt–CeO2–TiO2/ZSM-5 Catalysts for Highly Efficient Catalytic Oxidation of VOCs

Atomically Dispersed Pt-Triggered CZO/Cu-SSZ-13 Coupling Catalyst for the Efficient Low-Temperature Selective Catalytic Reduction of NOx

Recent Trends in Plasma-Assisted CO2 Methanation: A Critical Review of Recent Studies

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Synergistic Effect of ZSM-5 Zeolite in Pt–CeO₂–TiO₂/ZSM-5 Catalysts for Highly Efficient Catalytic Oxidation of VOCs

Synergistic Effect of ZSM-5 Zeolite in Pt–CeO₂–TiO₂/ZSM-5 Catalysts for Highly Efficient Catalytic Oxidation of VOCs

Atomically Dispersed Pt-Triggered CZO/Cu-SSZ-13 Coupling Catalyst for the Efficient Low-Temperature Selective Catalytic Reduction of NO_x