Supported catalysts based on Pd–In nanoparticles for the liquid-phase hydrogenation of terminal and internal alkynes: 1. formation and structure
| Autor: | I. S. Mashkovskii, M. N. Vargaftik, A. Yu. Stakheev, Olga P. Tkachenko, Ilya A. Yakushev, P. V. Markov, Galina N. Baeva, G. O. Bragina |
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| Rok vydání: | 2016 |
| Předmět: |
010405 organic chemistry
Nanoparticle Infrared spectroscopy Palladium hydride General Chemistry 010402 general chemistry Photochemistry 01 natural sciences Catalysis 0104 chemical sciences Computer Science Applications chemistry.chemical_compound chemistry Heteronuclear molecule Modeling and Simulation Desorption Molecule Bimetallic strip |
| Zdroj: | Kinetics and Catalysis. 57:617-624 |
| ISSN: | 1608-3210 0023-1584 |
| DOI: | 10.1134/s002315841605013x |
| Popis: | The formation of Pd–In catalysts synthesized from the heteronuclear acetate complex PdIn(CH3COO)5 was studied by temperature-programmed reduction, electron microscopy, IR spectroscopy of adsorbed CO and hydrogen temperature-programmed desorption (H2-TPD). IR spectroscopy of adsorbed CO and H2-TPD confirmed the formation of bimetallic Pd–In nanoparticles. It was found that the Pd–In nanoparticle surface contains predominantly Pd atoms separated from one another by indium atoms, which is evidenced by the disappearance of the CO band shift resulting from the lateral dipole–dipole interaction between adsorbed CO molecules and by a significant decrease in the band intensity of CO adsorbed in bridged form. Almost complete inhibition of palladium hydride (PdHx) provides additional evidence of the formation of Pd–In bimetallic particles. |
| Databáze: | OpenAIRE |
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