Catalytic Non-Thermal Plasma Decomposition of Ethylene by Using ZrO<sub>2</sub>Nanoparticles

Gandhi, M. Sanjeeva; Mok, Young Sun

doi:10.1002/ppap.201400121

Cited by 5 publications

(2 citation statements)

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“…In addition, ZrO 2 has been widely used as a support or a promoter due to its good thermal stability, moderate acidity and basicity as well as high oxygen mobility 16–20 . There are monoclinic (m), tetragonal (t) and cubic (c) crystal phases for ZrO 2 , among which c‐ZrO 2 is much less investigated due to extremely high formation temperature 17,18 .…”

Section: Introductionmentioning

confidence: 99%

A nanoscale Ni/ZrO₂ catalyst coated with Al₂O₃ for carbon dioxide reforming of methane

Wang

Bai

Guo

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUNDCO2 reforming of methane, also known as dry reforming of methane, has received significant attention because this technology can convert notorious greenhouse gases (CH4/CO2) into useful syngas (H2/CO). However, this technology still has not been commercialized, primarily due to the lack of feasible catalysts.RESULTSBased on zirconia (ZrO2) nanoparticles with pure monoclinic (m) or tetragonal (t) crystal phase, three nickel catalysts (Ni/m‐ZrO2, Ni/t‐ZrO2 and Ni/m‐ZrO2@Al2O3) have been synthesized for CO2 reforming of methane. The Ni/t‐ZrO2 catalyst exhibited the lowest reforming activity with CH4 conversion of 15.5% at 700 °C under 1 atm with a gas hourly space velocity of 96 000 mL (h gcat)−1. The Ni/m‐ZrO2 catalyst showed much higher initial activity but underwent severe deactivation, during which CH4 conversion decreased from 56.1% to 33.4% after 300 min of reaction. The nanocomposite Ni/m‐ZrO2@Al2O3 catalyst with confinement effect exhibited the best activity and good stability. Specifically, its CH4 conversion decreased merely from 60.2% to 55.3% after 24 h of reaction.CONCLUSIONSStructural characterizations demonstrate that limited specific surface area and weak metal–support interactions existed on the Ni/t‐ZrO2 catalyst, which led to large nickel nanoparticles and thus poor reforming activity. Both Ni/m‐ZrO2 and Ni/m‐ZrO2@Al2O3 catalysts had high specific surface area and very small nickel nanoparticles, which may rationalize the high reforming activity. The improved stability of the Ni/m‐ZrO2@Al2O3 catalyst was mainly related to the alleviated carbon deposition resulting from enriched surface basicity and strengthened metal–support interactions. © 2020 Society of Chemical Industry (SCI)

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Section: Introductionmentioning

confidence: 99%

A nanoscale Ni/ZrO₂ catalyst coated with Al₂O₃ for carbon dioxide reforming of methane

Wang

Bai

Guo

et al. 2020

J of Chemical Tech & Biotech

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“…In addition, SED and O 2 concertations also affect the formed CO x and byproducts [25,26]. The decomposition and mineralization of ethylene can be improved with plasma-catalytic reactors developed by Mok et al [27][28][29], and some unwanted byproducts, including O 3 and NO x , were inhibited at a low ethylene concertation. In conclusion, these researchers offered a rich diversity of methodologies to investigate 1-butene decomposition in the plasma system.…”

Section: Introductionmentioning

confidence: 99%

The Decomposition of Dilute 1-Butene in Tubular Multilayer Dielectric Barrier Discharge Reactor: Performance, By-Products and Reaction Mechanism

Zhu

Wang

et al. 2023

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Butene is a typical component of exhaust gas in the petrochemical industry, the emission of which into the atmosphere would lead to air pollution. In this study, a tubular multilayer dielectric barrier discharge (TM-DBD) reactor was developed to decompose 1-butene at ambient pressure. The experimental results show that a decomposition efficiency of more than 99% and COx selectivity of at least 43% could be obtained at a specific energy density of 100 J/L with an inlet concentration of 1-butene ranging from 100 to 400 ppm. Increasing the volume ratio of O2/N2 from 0 to 20% and the specific energy density from 33 to 132 J/L were beneficial for 1-butene destruction and mineralization. Based on organic byproduct analysis, it was inferred that the nitrogenous organic compounds were the main products in N2 atmosphere, while alcohol, aldehyde, ketone, acid and oxirane were detected in the presence of O2. In addition, the contents of formaldehyde, acetaldehyde, ethyl alcohol, acetic acid and propionic acid increased with an increase in specific energy density, but the contents of propionaldehyde, ethyl oxirane, butyraldehyde and formic acid decreased. Three main pathways of 1-butene destruction were proposed involving Criegee intermediates and ozonolysis of the olefins, and the following degradation could be the dominant pathways rather than epoxidation. Overall, the developed TM-DBD system paved the way for scaling up the applications of plasma technology for gaseous pollutant decomposition.

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A comprehensive study on scaling up ethylene abatement via intermittent plasma-catalytic discharge process in a novel reactor configuration comprising multiple honeycomb monoliths

Saud¹,

Bhattarai²,

Nguyen³

et al. 2023

Chemical Engineering Journal

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Catalytic Non-Thermal Plasma Decomposition of Ethylene by Using ZrO₂Nanoparticles

Cited by 5 publications

References 25 publications

A nanoscale Ni/ZrO₂ catalyst coated with Al₂O₃ for carbon dioxide reforming of methane

A nanoscale Ni/ZrO₂ catalyst coated with Al₂O₃ for carbon dioxide reforming of methane

The Decomposition of Dilute 1-Butene in Tubular Multilayer Dielectric Barrier Discharge Reactor: Performance, By-Products and Reaction Mechanism

A comprehensive study on scaling up ethylene abatement via intermittent plasma-catalytic discharge process in a novel reactor configuration comprising multiple honeycomb monoliths

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Catalytic Non-Thermal Plasma Decomposition of Ethylene by Using ZrO2Nanoparticles

Cited by 5 publications

References 25 publications

A nanoscale Ni/ZrO2 catalyst coated with Al2O3 for carbon dioxide reforming of methane

A nanoscale Ni/ZrO2 catalyst coated with Al2O3 for carbon dioxide reforming of methane

The Decomposition of Dilute 1-Butene in Tubular Multilayer Dielectric Barrier Discharge Reactor: Performance, By-Products and Reaction Mechanism

A comprehensive study on scaling up ethylene abatement via intermittent plasma-catalytic discharge process in a novel reactor configuration comprising multiple honeycomb monoliths

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Product

Resources

About

Catalytic Non-Thermal Plasma Decomposition of Ethylene by Using ZrO₂Nanoparticles

A nanoscale Ni/ZrO₂ catalyst coated with Al₂O₃ for carbon dioxide reforming of methane

A nanoscale Ni/ZrO₂ catalyst coated with Al₂O₃ for carbon dioxide reforming of methane