Výsledky vyhledávání - "Karl-Heinz Dostert"

Adsorption of acrolein, propanal, and allyl alcohol on Pd(111): a combined infrared reflection–absorption spectroscopy and temperature programmed desorption study

Autor: Francisco Ivars-Barceló, Francesca Mirabella, Karl-Heinz Dostert, Swetlana Schauermann, Casey P. O'Brien

Publikováno v: Physical Chemistry Chemical Physics

We present a mechanistic study on adsorption of acrolein and its partial hydrogenation products propanal and allyl alcohol over Pd(111) to understand the factors governing the selectivity in acrolein hydrogenation.
Atomistic-level understanding

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::513ab2def184e8eef4edab9c7bafa0c9
https://doi.org/10.1039/c6cp00877a

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Water Interaction with Iron Oxides

Autor: Karl-Heinz Dostert, Joachim Sauer, Casey P. O'Brien, Petr Dementyev, Hans-Joachim Freund, Francesca Mirabella, Joachim Paier, Swetlana Schauermann, Francisco Ivars-Barceló, Xiaoke Li

Publikováno v: Angewandte Chemie. 127:14148-14152

We present a mechanistic study on the interaction of water with a well-defined model Fe3O4(111) surface that was investigated by a combination of direct calorimetric measurements of adsorption energies, infrared vibrational spectroscopy, and calculat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49370ee1a0ec5361a5e0ca8090fd4ec6
https://doi.org/10.1002/ange.201506439

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Catalysis beyond frontier molecular orbitals: Selectivity in partial hydrogenation of multi-unsaturated hydrocarbons on metal catalysts

Autor: Karl-Heinz Dostert, Casey P. O'Brien, Swetlana Schauermann, Yingda Jiang, Alexandre Tkatchenko, Aditya Savara, Wei Liu, Wiebke Riedel

Publikováno v: Science Advances

Broadening of inner molecular orbitals upon adsorption can predict chemoselectivity of metal catalysts.
The mechanistic understanding and control over transformations of multi-unsaturated hydrocarbons on transition metal surfaces remains one of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ddac83777dd6f0dc738f7fb9d135a8d3
https://hdl.handle.net/11858/00-001M-0000-002D-C909-F11858/00-001M-0000-002D-C907-4

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Interaction of Isophorone with Pd(111): A Combination of Infrared Reflection–Absorption Spectroscopy, Near-Edge X-ray Absorption Fine Structure, and Density Functional Theory Studies

Autor: Wei Liu, Alexandre Tkatchenko, Karl-Heinz Dostert, Swetlana Schauermann, Casey P. O'Brien, Martin Oehzelt, Wiebke Riedel, Aditya Savara

Publikováno v: The Journal of Physical Chemistry. C, Nanomaterials and Interfaces
The Journal of Physical Chemistry C

Atomistic level understanding of interaction of amp; 945;, amp; 946; unsaturated carbonyls with late transition metals is a key prerequisite for rational design of new catalytic materials with the desired selectivity toward C C or C O bond hydrogenat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dacbdcbd09d371297ad34c70d7d7d525
https://doi.org/10.1021/jp506637v

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Temperature dependence of the 2-butene hydrogenation over supported Pd nanoparticles and Pd(111)

Autor: Karl-Heinz Dostert, Swetlana Schauermann, Aditya Savara, Wiebke Ludwig

Publikováno v: Journal of Molecular Catalysis A: Chemical. 377:137-142

The activity and induction times for 2-butene hydrogenation have been investigated over a Pd(1 1 1) single crystal surface and model Pd nanoparticles supported on Fe 3 O 4 /Pt(1 1 1) by isothermal pulsed molecular beam experiments, in the temperature

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::86c0a7775618c5f01b5643200889dd8e
https://doi.org/10.1016/j.molcata.2013.04.015

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Selective Hydrogenation of Acrolein Over Pd Model Catalysts: Temperature and Particle-Size Effects

Autor: Casey P. O'Brien, Hans-Joachim Freund, Karl-Heinz Dostert, Swetlana Schauermann

Publikováno v: Chemistry-A European Journal.-Kiel : Universitätsbibliothek; 2016.-S.15856-15863.
Chemistry-A European Journal.-Kiel : Universitätsbibliothek; 2017.-S.15856-15863.

In this work, the selectivity in hydrogenation of acrolein over Fe 3 O 4 -supported Pd nanoparticles is investigated as a function of nanoparticle size in the 220-270 K temperature range. While Pd(111) shows nearly 100% selectivity towards the desire

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8177068ced5f278abedc448ec403408a
https://macau.uni-kiel.de/receive/publ_mods_00001554

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Selective Partial Hydrogenation of Acrolein on Pd: a Mechanistic Study

Autor: Casey P. O'Brien, Karl-Heinz Dostert, Francisco Ivars-Barceló, Francesca Mirabella, Smadar Attia, Swetlana Schauermann, Hans-Joachim Freund, Evan J. Spadafora

Publikováno v: ACS catalysis.-Kiel : Universitätsbibliothek; 2017.-S.5523-5533.

Identifying the surface processes governing the selectivity in hydrogenation of α,β-unsaturated carbonyl compounds on late transition metals is crucial for the rational design of catalytic material...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da31d21324cfa680b4dfa4a5e0bd1328
http://macau.uni-kiel.de/receive/macau_publ_00001550

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Olefin hydrogenation on Pd model supported catalysts: New mechanistic insights

Autor: Aditya Savara, Swetlana Schauermann, Karl-Heinz Dostert, Wiebke Ludwig

Publikováno v: Journal of Catalysis. 284:148-156

Hydrogenation of unsaturated hydrocarbon compounds, catalyzed by transition metals, is traditionally believed to be a structure-insensitive reaction. Recent progress in understanding the microscopic details of hydrogenation processes now challenges t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9e9843495b76cf0342dfced60b249699
https://doi.org/10.1016/j.jcat.2011.10.010

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Supports and Modified Nano-particles in Designing Model Catalysts

Autor: Swetlana Schauermann, Casey P. O'Brien, Martin Sterrer, Christian Stiehler, Florencia Calaza, Hans-Joachim Freund, Karl-Heinz Dostert, Shamil K. Shaikhutdinov, Michael Hollerer

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Faraday Discussions.-Cambridge : Royal Society of Chemistry; 2016.-S.309-321.
Faraday Discussions

In order to design catalytic materials, we need to understand the essential causes for material properties resulting from its composite nature. In this paper we discuss two, at first sight, diverse aspects: a) the effect of the oxide-metal interface

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10927ee81f0e82f8c5b0a60eabc76dec
https://macau.uni-kiel.de/receive/publ_mods_00001575

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