Effect of thermal treatment on the stability of Na-Mn-W/SiO2catalyst for the oxidative coupling of methane

Dorota Matras; Antonios Vamvakeros; Simon D.M. Jacques; Nicolas Grosjean; Benjamin Rollins; Stephen Poulston; Gavin B.G. Stenning; Hamid R. Godini; Jakub Drnec; Robert J. Cernik; Andrew M. Beale

doi:10.1039/c9fd00142e

Effect of thermal treatment on the stability of Na-Mn-W/SiO₂catalyst for the oxidative coupling of methane

Dorota Matras (Corresponding author)
, Antonios Vamvakeros
, Simon D.M. Jacques (Corresponding author)
, Nicolas Grosjean
, Benjamin Rollins
, Stephen Poulston
, Gavin B.G. Stenning
, Hamid R. Godini
, Jakub Drnec
, Robert J. Cernik
, Andrew M. Beale (Corresponding author)

Research output: Contribution to journal › Article › Academic › peer-review

38 Citations (Scopus)

104 Downloads (Pure)

Abstract

In this study, we investigate the effect of thermal treatment/calcination on the stability and activity of a Na-Mn-W/SiO2 catalyst for the oxidative coupling of methane. The catalyst performance and characterisation measurements suggest that the W species are directly involved in the catalyst active site responsible for CH4 conversion. Under operating conditions, the active components, present in the form of a Na-W-O-Mn molten state, are highly mobile and volatile. By varying the parameters of the calcination protocol, it was shown that these molten components can be partially stabilised, resulting in a catalyst with lower activity (due to loss of surface area) but higher stability even for long duration OCM reaction experiments.

Original language	English
Pages (from-to)	176-196
Number of pages	21
Journal	Faraday Discussions
Volume	229
DOIs	https://doi.org/10.1039/c9fd00142e
Publication status	Published - Feb 2021

Bibliographical note

Funding Information:
This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 679933 (MEMERE project). We acknowledge the European Synchrotron Radiation Facility for provision of synchrotron radiation facilities. A. M. B. acknowledges the EPSRC (award EP/K007467/1) for funding.

Funding Information:
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 679933 (MEM-ERE project). We acknowledge the European Synchrotron Radiation Facility for provision of synchrotron radiation facilities. A. M. B. acknowledges the EPSRC (award EP/K007467/1) for funding.

Publisher Copyright:
© 2021 The Royal Society of Chemistry.

Funding

This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 679933 (MEMERE project). We acknowledge the European Synchrotron Radiation Facility for provision of synchrotron radiation facilities. A. M. B. acknowledges the EPSRC (award EP/K007467/1) for funding. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 679933 (MEM-ERE project). We acknowledge the European Synchrotron Radiation Facility for provision of synchrotron radiation facilities. A. M. B. acknowledges the EPSRC (award EP/K007467/1) for funding.

Funders	Funder number
European Union's Horizon 2020 - Research and Innovation Framework Programme
Engineering and Physical Sciences Research Council	EP/K007467/1
European Union's Horizon 2020 - Research and Innovation Framework Programme	679933

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10.1039/c9fd00142e

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Cite this

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title = "Effect of thermal treatment on the stability of Na-Mn-W/SiO2catalyst for the oxidative coupling of methane",

abstract = "In this study, we investigate the effect of thermal treatment/calcination on the stability and activity of a Na-Mn-W/SiO2 catalyst for the oxidative coupling of methane. The catalyst performance and characterisation measurements suggest that the W species are directly involved in the catalyst active site responsible for CH4 conversion. Under operating conditions, the active components, present in the form of a Na-W-O-Mn molten state, are highly mobile and volatile. By varying the parameters of the calcination protocol, it was shown that these molten components can be partially stabilised, resulting in a catalyst with lower activity (due to loss of surface area) but higher stability even for long duration OCM reaction experiments.",

author = "Dorota Matras and Antonios Vamvakeros and Jacques, \{Simon D.M.\} and Nicolas Grosjean and Benjamin Rollins and Stephen Poulston and Stenning, \{Gavin B.G.\} and Godini, \{Hamid R.\} and Jakub Drnec and Cernik, \{Robert J.\} and Beale, \{Andrew M.\}",

note = "Funding Information: This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 679933 (MEMERE project). We acknowledge the European Synchrotron Radiation Facility for provision of synchrotron radiation facilities. A. M. B. acknowledges the EPSRC (award EP/K007467/1) for funding. Funding Information: This project has received funding from the European Union{\textquoteright}s Horizon 2020 research and innovation programme under grant agreement No 679933 (MEM-ERE project). We acknowledge the European Synchrotron Radiation Facility for provision of synchrotron radiation facilities. A. M. B. acknowledges the EPSRC (award EP/K007467/1) for funding. Publisher Copyright: {\textcopyright} 2021 The Royal Society of Chemistry.",

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doi = "10.1039/c9fd00142e",

language = "English",

volume = "229",

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AU - Vamvakeros, Antonios

AU - Jacques, Simon D.M.

AU - Grosjean, Nicolas

AU - Rollins, Benjamin

AU - Poulston, Stephen

AU - Stenning, Gavin B.G.

AU - Godini, Hamid R.

AU - Drnec, Jakub

AU - Cernik, Robert J.

AU - Beale, Andrew M.

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