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Probing the role of a Non-Thermal Plasma (NTP) in the hybrid NTP catalytic oxidation of methane

Probing the role of a Non-Thermal Plasma (NTP) in the hybrid NTP catalytic oxidation of methane
Probing the role of a Non-Thermal Plasma (NTP) in the hybrid NTP catalytic oxidation of methane
Three recurring hypotheses are often used to explain the effect of non-thermal plasmas (NTPs) on NTP catalytic hybrid reactions; namely, modification or heating of the catalyst or creation of new reaction pathways by plasma-produced species. NTP-assisted methane (CH4) oxidation over Pd/Al2O3 was investigated by direct monitoring of the X-ray absorption fine structure of the catalyst, coupled with end-of-pipe mass spectrometry. This in situ study revealed that the catalyst did not undergo any significant structural changes under NTP conditions. However, the NTP did lead to an increase in the temperature of the Pd nanoparticles; although this temperature rise was insufficient to activate the thermal CH4 oxidation reaction. The contribution of a lower activation barrier alternative reaction pathway involving the formation of CH3(g) from electron impact reactions is proposed.
1433-7851
9351-9355
Gibson, Emma K.
738c74e4-ab68-42fe-bda8-9d4a43669b31
Stere, Cristina E.
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Curran-McAteer, Bronagh
4ac56e77-f404-4917-bd98-7591dfc03f93
Jones, Wilm
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Cibin, Giannantonio
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Gianolio, Diego
5b316f7d-f314-4337-954e-8c0ce8e38223
Goguet, Alexandre
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Wells, Peter P.
bc4fdc2d-a490-41bf-86cc-400edecf2266
Catlow, C. Richard A.
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Collier, Paul
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Hinde, Peter
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Hardacre, Christopher
0715f59a-c82e-4844-a9f8-6a06fb36320f
Gibson, Emma K.
738c74e4-ab68-42fe-bda8-9d4a43669b31
Stere, Cristina E.
1e8a4378-b55e-4560-8459-5b8d2282f77c
Curran-McAteer, Bronagh
4ac56e77-f404-4917-bd98-7591dfc03f93
Jones, Wilm
5a831df0-a1c8-4a86-a948-4f4e9c438fa6
Cibin, Giannantonio
61a833d3-097f-4817-bcd3-6b26cf42dbe5
Gianolio, Diego
5b316f7d-f314-4337-954e-8c0ce8e38223
Goguet, Alexandre
4de6e217-9733-4d26-b041-ab996672d919
Wells, Peter P.
bc4fdc2d-a490-41bf-86cc-400edecf2266
Catlow, C. Richard A.
50b88125-9415-4b37-9146-af6783e42510
Collier, Paul
5ef98081-0269-4b6f-8c29-8e50facf17db
Hinde, Peter
35f1b48e-b725-4c07-b1f6-96f37452e46d
Hardacre, Christopher
0715f59a-c82e-4844-a9f8-6a06fb36320f

Gibson, Emma K., Stere, Cristina E., Curran-McAteer, Bronagh, Jones, Wilm, Cibin, Giannantonio, Gianolio, Diego, Goguet, Alexandre, Wells, Peter P., Catlow, C. Richard A., Collier, Paul, Hinde, Peter and Hardacre, Christopher (2017) Probing the role of a Non-Thermal Plasma (NTP) in the hybrid NTP catalytic oxidation of methane. Angewandte Chemie International Edition, 56 (32), 9351-9355. (doi:10.1002/anie.201703550).

Record type: Article

Abstract

Three recurring hypotheses are often used to explain the effect of non-thermal plasmas (NTPs) on NTP catalytic hybrid reactions; namely, modification or heating of the catalyst or creation of new reaction pathways by plasma-produced species. NTP-assisted methane (CH4) oxidation over Pd/Al2O3 was investigated by direct monitoring of the X-ray absorption fine structure of the catalyst, coupled with end-of-pipe mass spectrometry. This in situ study revealed that the catalyst did not undergo any significant structural changes under NTP conditions. However, the NTP did lead to an increase in the temperature of the Pd nanoparticles; although this temperature rise was insufficient to activate the thermal CH4 oxidation reaction. The contribution of a lower activation barrier alternative reaction pathway involving the formation of CH3(g) from electron impact reactions is proposed.

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Accepted/In Press date: 1 June 2017
e-pub ahead of print date: 6 July 2017
Published date: 1 August 2017

Identifiers

Local EPrints ID: 413122
URI: http://eprints.soton.ac.uk/id/eprint/413122
ISSN: 1433-7851
PURE UUID: 7fa0de47-961c-4a1b-a209-ed82d3d27815
ORCID for Peter P. Wells: ORCID iD orcid.org/0000-0002-0859-9172

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Date deposited: 15 Aug 2017 16:30
Last modified: 15 Sep 2021 01:50

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