Matras, D;
Vamvakeros, A;
Jacques, S;
Grosjean, N;
Rollins, B;
Poulston, S;
Stenning, GBG;
... Beale, AM; + view all
(2021)
Effect of thermal treatment on the stability of Na-Mn-W/SiO2 Catalyst for the Oxidative Coupling of Methane.
Faraday Discussions
, 229
pp. 176-196.
10.1039/c9fd00142e.
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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 reaction. 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 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.
| Type: | Article |
|---|---|
| Title: | Effect of thermal treatment on the stability of Na-Mn-W/SiO2 Catalyst for the Oxidative Coupling of Methane |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/c9fd00142e |
| Publisher version: | https://doi.org/10.1039/c9fd00142e |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10098199 |
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