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dc.contributor.authorGau, Alina-
dc.contributor.authorHack, Jannis-
dc.contributor.authorMaeda, Nobutaka-
dc.contributor.authorMeier, Daniel Matthias-
dc.date.accessioned2021-09-13T08:06:06Z-
dc.date.available2021-09-13T08:06:06Z-
dc.date.issued2021-09-07-
dc.identifier.issn0887-0624de_CH
dc.identifier.issn1520-5029de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/23095-
dc.description.abstractOperando infrared spectroscopy is an invaluable tool to provide a deep insight into underlying mechanisms in heterogeneous catalysis. Recent advances in spectroscopic techniques enabled operando analysis under elevated pressure and temperature. In this study we compared a conventional steady-state IR analysis with a transient IR analysis by modulation excitation spectroscopy (MES) using a model reaction, CO2 hydrogenation to methanol at 30 bar and 250 °C. The steady-state IR spectra provide information about surface properties of catalysts while the transient IR spectra are a powerful tool to unveil the kinetics of surface species involved in catalytic cycles and therefore to determine rate-limiting step. Operando MES-IR spectroscopy evidenced that under the reaction conditions (30 bar, 250 °C) hydrogenation of surface methoxy species (CH3O−) is the rate-limiting step for the Cu–Zn based catalyst. We herein demonstrate that comparative analysis of both steady-state and transient spectra at elevated pressure provides a solid understanding of surface processes, allowing a rational catalyst design.de_CH
dc.language.isoende_CH
dc.publisherAmerican Chemical Societyde_CH
dc.relation.ispartofEnergy & Fuelsde_CH
dc.rightsLicence according to publishing contractde_CH
dc.subjectOxidesde_CH
dc.subjectInorganic carbon compoundsde_CH
dc.subjectAlcoholsde_CH
dc.subjectInfrared spectroscopyde_CH
dc.subjectInfrared lightde_CH
dc.subject.ddc540: Chemiede_CH
dc.titleOperando spectroscopic monitoring of active species in CO2 hydrogenation at elevated pressure and temperature : steady-state versus transient analysisde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitInstitute of Materials and Process Engineering (IMPE)de_CH
dc.identifier.doi10.1021/acs.energyfuels.1c02592de_CH
zhaw.funding.euNode_CH
zhaw.originated.zhawYesde_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
zhaw.webfeedChemieingenieurwesende_CH
zhaw.webfeedVerfahrenstechnikde_CH
zhaw.author.additionalNode_CH
zhaw.display.portraitYesde_CH
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Gau, A., Hack, J., Maeda, N., & Meier, D. M. (2021). Operando spectroscopic monitoring of active species in CO2 hydrogenation at elevated pressure and temperature : steady-state versus transient analysis. Energy & Fuels. https://doi.org/10.1021/acs.energyfuels.1c02592
Gau, A. et al. (2021) ‘Operando spectroscopic monitoring of active species in CO2 hydrogenation at elevated pressure and temperature : steady-state versus transient analysis’, Energy & Fuels [Preprint]. Available at: https://doi.org/10.1021/acs.energyfuels.1c02592.
A. Gau, J. Hack, N. Maeda, and D. M. Meier, “Operando spectroscopic monitoring of active species in CO2 hydrogenation at elevated pressure and temperature : steady-state versus transient analysis,” Energy & Fuels, Sep. 2021, doi: 10.1021/acs.energyfuels.1c02592.
GAU, Alina, Jannis HACK, Nobutaka MAEDA und Daniel Matthias MEIER, 2021. Operando spectroscopic monitoring of active species in CO2 hydrogenation at elevated pressure and temperature : steady-state versus transient analysis. Energy & Fuels. 7 September 2021. DOI 10.1021/acs.energyfuels.1c02592
Gau, Alina, Jannis Hack, Nobutaka Maeda, and Daniel Matthias Meier. 2021. “Operando Spectroscopic Monitoring of Active Species in CO2 Hydrogenation at Elevated Pressure and Temperature : Steady-State versus Transient Analysis.” Energy & Fuels, September. https://doi.org/10.1021/acs.energyfuels.1c02592.
Gau, Alina, et al. “Operando Spectroscopic Monitoring of Active Species in CO2 Hydrogenation at Elevated Pressure and Temperature : Steady-State versus Transient Analysis.” Energy & Fuels, Sept. 2021, https://doi.org/10.1021/acs.energyfuels.1c02592.


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