Výsledky vyhledávání - "Mayke Werner"

Iron Carbide or Iron Carbide / Cobalt Nanoparticles for Magnetically-Induced CO 2 Hydrogenation over Ni/SiRAlOx Catalysts

Autor: Julien Marbaix, Juan M. Asensio, Katerina Soulantica, Sumeet S. Kale, Pier-Francesco Fazzini, Bruno Chaudret, Marta Estrader, Deliang Yi, Mayke Werner, Alexis Bordet

Publikováno v: Catalysis Science & Technology
Catalysis Science & Technology, In press, ⟨10.1039/C9CY00437H⟩
Catalysis Science & Technology, Royal Society of Chemistry, In press, ⟨10.1039/C9CY00437H⟩
Dipòsit Digital de la UB
Universidad de Barcelona

International audience; Magnetic nanoparticles heve recently been used as heating agents in heterogeneously catalyzed reactions such as CO 2 hydrogenation into methane. In the present work, we explore the potential of heating agents presenting differ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38c2540f6e4190a2cdf12a4a7ab548f3
https://hal.science/hal-02100315

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Synthesis and solid state NMR characterization of novel peptide/silica hybrid materials

Autor: Andreas Heil, Hergen Breitzke, Niels Rothermel, Pedro B. Groszewicz, Aany Sofia Lilly Thankamony, Gerd Buntkowsky, Torsten Gutmann, Mayke Werner

Publikováno v: Solid State Nuclear Magnetic Resonance. 72:73-78

The successful synthesis and solid state NMR characterization of silica-based organic-inorganic hybrid materials is presented. For this, collagen-like peptides are immobilized on carboxylate functionalized mesoporous silica (COOH/SiOx) materials. A p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba699ffa8e9512306a8ef32ee860e81b
https://doi.org/10.1016/j.ssnmr.2015.09.008

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Natural Abundance15N NMR by Dynamic Nuclear Polarization: Fast Analysis of Binding Sites of a Novel Amine-Carboxyl-Linked Immobilized Dirhodium Catalyst

Autor: Mayke Werner, Snorri Th. Sigurdsson, Torsten Gutmann, Jiquan Liu, Niels Rothermel, Eva A. Jaumann, Hergen Breitzke, Yeping Xu, Gerd Buntkowsky

Publikováno v: Chemistry - A European Journal. 21:3798-3805

A novel heterogeneous dirhodium catalyst has been synthesized. This stable catalyst is constructed from dirhodium acetate dimer (Rh2(OAc)4) units, which are covalently linked to amine- and carboxyl-bifunctionalized mesoporous silica (SBA-15-NH2-COOH)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00913d2eeaa2d901f44b62b89ae855bf
https://doi.org/10.1002/chem.201405043

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Stability, Hydration, and Thermodynamic Properties of RNase A Confined in Surface-Functionalized SBA-15 Mesoporous Molecular Sieves

Autor: Shuang Zhao, Gerd Buntkowsky, Roland Winter, Martin Hartmann, Marie Kahse, Mayke Werner

Publikováno v: The Journal of Physical Chemistry C. 118:21523-21531

Mesoporous silicates (MPS) have several advantages for the immobilization of enzymes and large organic molecules. They possess well-defined pores and their surfaces can be functionalized by chemical methods. In this study, the model protein ribonucle

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d3eff79a1525db73b86081be03df6657
https://doi.org/10.1021/jp506544n

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Recent Advances in Solid State NMR of Small Molecules in Confinement

Autor: Hergen Breitzke, Gerd Buntkowsky, Niels Rothermel, Torsten Gutmann, Mayke Werner

Publikováno v: Israel Journal of Chemistry. 54:60-73

In the past years, porous media have become a major focus of materials science, due to their versatile properties, such as high surface area, low specific weight, high surface functionality, and the ability to customize their surface properties. Appl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8e4b126093107e4f04f8e7cf47944801
https://doi.org/10.1002/ijch.201300095

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Solid-state NMR concepts for the investigation of supported transition metal catalysts and nanoparticles

Autor: Mayke Werner, Safaa Abdulhussain, Niels Rothermel, Mohamad Srour, Torsten Gutmann, Yeping Xu, Anna Grünberg, Gerd Buntkowsky, Hergen Breitzke, Shulin Tan

Publikováno v: Solid State Nuclear Magnetic Resonance. :1-11

In recent years, solid-state NMR spectroscopy has evolved into an important characterization tool for the study of solid catalysts and chemical processes on their surface. This interest is mainly triggered by the need of environmentally benign organi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d09159e8d6292d4dcbf7b0c571302d64
https://doi.org/10.1016/j.ssnmr.2013.06.004

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Restricted Dynamics of a Deuterated Linker Grafted on SBA-15 Revealed by Deuterium MAS NMR

Autor: Yeping Xu, Mayke Werner, Gerd Buntkowsky, S. Jayanthi, Shimon Vega

Publikováno v: The Journal of Physical Chemistry C. 117:13114-13121

Deuterium (H-2) magic angle spinning (MAS) NMR has been employed to monitor the restricted mobility of a molecule grafted at the inner surface of mesoporous SBA-15. The grafted linear moiety (O3Si-CH2-CH2-C(O)-N(H)-CD CD NH2) has two deuterated methy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a8f537658909b485e653f66e1a10ead8
https://doi.org/10.1021/jp4028782

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Melting of Low Molecular Weight Compounds in Confinement Observed by 2H-Solid State NMR: Biphenyl, a Case Study

Autor: Hergen Breitzke, Mayke Werner, Jarek Frydel, Hans-Heinrich Limbach, Nader de Sousa Amadeu, Bob Grünberg, Gerd Buntkowsky

Publikováno v: Zeitschrift für Physikalische Chemie. 226:1169-1186

The 2H-NMR solid echo spectra of biphenyl molecules as guests in the mesopores of neat and silylated SBA-15 have been measured as a function of temperature. At low temperatures typical 2H-Pake patterns with parameters of (Q zz =132 kHz, corresponding

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8943c0b6a0dbaa4b1d30a8f11dbfd457
https://doi.org/10.1524/zpch.2012.0304

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Conjugated Microporous Polymer Networks via Yamamoto Polymerization

Autor: Arne Thomas, Johannes Schmidt, Mayke Werner

Publikováno v: Macromolecules. 42:4426-4429

The Yamamoto polymerization has been used for the synthesis of conjugated, microporous polymer networks. The polymerization is advantageous as only a single, halogen-functionalized monomer can be used to form polymer networks. Polymer networks are pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::28d447d65621e1447e7d3069d69a780a
https://doi.org/10.1021/ma9005473

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