Fluctuating Storage of the Active Phase in a Mn‐Na(2)WO(4)/SiO(2) Catalyst for the Oxidative Coupling of Methane

Structural dynamics of a Mn‐Na(2)WO(4)/SiO(2) catalyst were detected directly under reaction conditions during the oxidative coupling of methane via in situ XRD and operando Raman spectroscopy. A new concept of fluctuating storage and release of an active phase in heterogeneous catalysis is proposed...

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Autores principales: Werny, Maximilian J., Wang, Yuanqing, Girgsdies, Frank, Schlögl, Robert, Trunschke, Annette
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2020
Materias:
Research Articles
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7496389/
https://www.ncbi.nlm.nih.gov/pubmed/32364281
http://dx.doi.org/10.1002/anie.202004778
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author Werny, Maximilian J.
Wang, Yuanqing
Girgsdies, Frank
Schlögl, Robert
Trunschke, Annette
author_facet Werny, Maximilian J.
Wang, Yuanqing
Girgsdies, Frank
Schlögl, Robert
Trunschke, Annette
author_sort Werny, Maximilian J.
collection PubMed
description Structural dynamics of a Mn‐Na(2)WO(4)/SiO(2) catalyst were detected directly under reaction conditions during the oxidative coupling of methane via in situ XRD and operando Raman spectroscopy. A new concept of fluctuating storage and release of an active phase in heterogeneous catalysis is proposed that involves the transient generation of active sodium oxide species via a reversible reaction of Na(2)WO(4) with Mn(7)SiO(12). The process is enabled by phase transitions and melting at the high reaction temperatures that are typically applied.
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spelling pubmed-74963892020-09-25 Fluctuating Storage of the Active Phase in a Mn‐Na(2)WO(4)/SiO(2) Catalyst for the Oxidative Coupling of Methane Werny, Maximilian J. Wang, Yuanqing Girgsdies, Frank Schlögl, Robert Trunschke, Annette Angew Chem Int Ed Engl Research Articles Structural dynamics of a Mn‐Na(2)WO(4)/SiO(2) catalyst were detected directly under reaction conditions during the oxidative coupling of methane via in situ XRD and operando Raman spectroscopy. A new concept of fluctuating storage and release of an active phase in heterogeneous catalysis is proposed that involves the transient generation of active sodium oxide species via a reversible reaction of Na(2)WO(4) with Mn(7)SiO(12). The process is enabled by phase transitions and melting at the high reaction temperatures that are typically applied. John Wiley and Sons Inc. 2020-06-17 2020-08-24 /pmc/articles/PMC7496389/ /pubmed/32364281 http://dx.doi.org/10.1002/anie.202004778 Text en © 2020 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Articles
Werny, Maximilian J.
Wang, Yuanqing
Girgsdies, Frank
Schlögl, Robert
Trunschke, Annette
Fluctuating Storage of the Active Phase in a Mn‐Na(2)WO(4)/SiO(2) Catalyst for the Oxidative Coupling of Methane
title Fluctuating Storage of the Active Phase in a Mn‐Na(2)WO(4)/SiO(2) Catalyst for the Oxidative Coupling of Methane
title_full Fluctuating Storage of the Active Phase in a Mn‐Na(2)WO(4)/SiO(2) Catalyst for the Oxidative Coupling of Methane
title_fullStr Fluctuating Storage of the Active Phase in a Mn‐Na(2)WO(4)/SiO(2) Catalyst for the Oxidative Coupling of Methane
title_full_unstemmed Fluctuating Storage of the Active Phase in a Mn‐Na(2)WO(4)/SiO(2) Catalyst for the Oxidative Coupling of Methane
title_short Fluctuating Storage of the Active Phase in a Mn‐Na(2)WO(4)/SiO(2) Catalyst for the Oxidative Coupling of Methane
title_sort fluctuating storage of the active phase in a mn‐na(2)wo(4)/sio(2) catalyst for the oxidative coupling of methane
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7496389/
https://www.ncbi.nlm.nih.gov/pubmed/32364281
http://dx.doi.org/10.1002/anie.202004778
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