dc.contributor.author | Redekop, Evgeniy | |
dc.contributor.author | Cordero-Lanzac, Tomás | |
dc.contributor.author | Salusso, Davide | |
dc.contributor.author | Pokle, Anuj | |
dc.contributor.author | Øien-Ødegaard, Sigurd | |
dc.contributor.author | Sunding, Martin Fleissner | |
dc.contributor.author | Diplas, Spyridon | |
dc.contributor.author | Negri, Chiara | |
dc.contributor.author | Borfecchia, Elisa | |
dc.contributor.author | Bordiga, Silvia | |
dc.contributor.author | Olsbye, Unni | |
dc.date.accessioned | 2024-06-05T08:32:28Z | |
dc.date.available | 2024-06-05T08:32:28Z | |
dc.date.created | 2024-01-03T17:43:48Z | |
dc.date.issued | 2023 | |
dc.identifier.citation | Chemistry of Materials. 2023, 35 (24), 10434-10445. | en_US |
dc.identifier.issn | 0897-4756 | |
dc.identifier.uri | https://hdl.handle.net/11250/3132626 | |
dc.description.abstract | ZnO–ZrO2 mixed oxide (ZnZrOx) catalysts are widely studied as selective catalysts for CO2 hydrogenation into methanol at high-temperature conditions (300–350 °C) that are preferred for the subsequent in situ zeolite-catalyzed conversion of methanol into hydrocarbons in a tandem process. Zn, a key ingredient of these mixed oxide catalysts, is known to volatilize from ZnO under high-temperature conditions, but little is known about Zn mobility and volatility in mixed oxides. Here, an array of ex situ and in situ characterization techniques (scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDX), transmission electron microscopy (TEM), powder X-ray diffraction (PXRD), X-ray absorption spectroscopy (XAS), X-ray photoelectron spectroscopy (XPS), Infrared (IR)) was used to reveal that Zn2+ species are mobile between the solid solution phase with ZrO2 and segregated and/or embedded ZnO clusters. Upon reductive heat treatments, partially reversible ZnO cluster growth was observed above 250 °C and eventual Zn evaporation above 550 °C. Extensive Zn evaporation leads to catalyst deactivation and methanol selectivity decline in CO2 hydrogenation. These findings extend the fundamental knowledge of Zn-containing mixed oxide catalysts and are highly relevant for the CO2-to-hydrocarbon process optimization. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | American Chemical Society | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Zn Redistribution and Volatility in ZnZrOx Catalysts for CO2 Hydrogenation | en_US |
dc.title.alternative | Zn Redistribution and Volatility in ZnZrOx Catalysts for CO2 Hydrogenation | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | © 2023 The Authors. Published by American Chemical Society. | en_US |
dc.source.pagenumber | 10434-10445 | en_US |
dc.source.volume | 35 | en_US |
dc.source.journal | Chemistry of Materials | en_US |
dc.source.issue | 24 | en_US |
dc.identifier.doi | 10.1021/acs.chemmater.3c01632 | |
dc.identifier.cristin | 2220234 | |
dc.relation.project | EU/837733 | en_US |
dc.relation.project | NORTEM: 197405 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |