1-Heptyne semihydrogenation catalized by palladium or rhodium complexes. Influence of: metal atom, ligands and the homo/heterogeneous condition
[RhCl(TDA)3], [RhCl(HA)3], [PdCl2(TDA)2] and [PdCl2(HA)2] (TDA = tridecylamine, HA = hexylamine) were synthesized and tested as catalysts in homogeneous and heterogeneous condition for the 1-heptyne semihydrogenation, using γ-alumina as support. The Lindlar catalyst was used as a reference. XPS, FTI...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2007 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/65324 |
| Acceso en línea: | http://hdl.handle.net/11336/65324 |
| Access Level: | acceso abierto |
| Palabra clave: | 1-Heptyne Semihydrogenation Rh/Pd Complexes Coordination Sphere Homo/Heterogeneus Condition https://purl.org/becyt/ford/2.4 https://purl.org/becyt/ford/2 |
| Sumario: | [RhCl(TDA)3], [RhCl(HA)3], [PdCl2(TDA)2] and [PdCl2(HA)2] (TDA = tridecylamine, HA = hexylamine) were synthesized and tested as catalysts in homogeneous and heterogeneous condition for the 1-heptyne semihydrogenation, using γ-alumina as support. The Lindlar catalyst was used as a reference. XPS, FTIR and Atomic Absorption results showed that the active catalytic species in each case is the complex itself. All of the catalytic systems exhibited a better performance than the Lindlar catalyst, with the exception of [PdCl2(HA)2]. The analysis of activity and selectivity values allowed to say that the best system is [RhCl(TDA)3]/Al2O3, an heterogeneous catalyst with an electron-rich transition metal and an electron-donating ligand (TDA) containing a long-chain hydrocarbon substituent. The complex system catalytic behaviour could be explained by means of electronic and geometric effects. |
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