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Room-temperature Suzuki-Miyaura reaction catalyzed by Pd supported on rare earth oxides: Influence of the point of zero charge on the catalytic activity
dc.contributor.author | Amoroso, Francesco |
dc.contributor.author | Colussi, Sara |
dc.contributor.author | del Zotto, Alessandro |
dc.contributor.author | Llorca Piqué, Jordi |
dc.contributor.author | Trovarelli, Alessandro |
dc.contributor.other | Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques |
dc.date.accessioned | 2013-11-28T13:20:35Z |
dc.date.created | 2013-06-01 |
dc.date.issued | 2013-06-01 |
dc.identifier.citation | Amoroso, F. [et al.]. Room-temperature Suzuki-Miyaura reaction catalyzed by Pd supported on rare earth oxides: Influence of the point of zero charge on the catalytic activity. "Catalysis letters", 01 Juny 2013, vol. 143, núm. 6, p. 547-554. |
dc.identifier.issn | 1011-372X |
dc.identifier.uri | http://hdl.handle.net/2117/20834 |
dc.description.abstract | Five Pd/REO (rare earth oxide) compounds (Pd/La2O3, Pd/CeO2, Pd/Pr6O11, Pd/Sm2O 3, and Pd/Gd2O3) have been successfully used as precatalysts in the Suzuki-Miyaura C-C cross-coupling reaction of aryl bromides with arylboronic acids in ethanol/water at r.t. All Pd/REO showed high activity and selectivity. The effective catalyst arises from palladium leaching from the REO support. We have demonstrated that the activity of each Pd/REO (the decreasing order is Pd/La2O3 > Pd/Pr6O 11 > Pd/Gd2O3 > Pd/Sm2O 3 ≫ Pd/CeO2) is strictly related to the corresponding PZC (point of zero charge) value. Accordingly, it can be reasonably argued that the metal is released in solution in the form of Pd2+, and higher is the amount of positive charge on the surface in catalytic conditions, higher is the concentration of Pd2+ ions in solution and faster is the formation of the coupling product. Also the recycling of each Pd/REO is strictly connected with the PZC value of the REO support. As a matter of fact, Pd/CeO2, which has the lowest PZC value (6.7), shows the best reusability, according to its lower tendency to release Pd2+ ions in solution. |
dc.format.extent | 8 p. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria química::Química física |
dc.subject | Àrees temàtiques de la UPC::Enginyeria química::Química del medi ambient::Geoquímica |
dc.subject.lcsh | Chemical reactions |
dc.subject.lcsh | Palladium |
dc.subject.other | C-C bond formation |
dc.subject.other | Metal leaching |
dc.subject.other | Palladium |
dc.subject.other | Point of zero charge |
dc.subject.other | Rare earth oxides |
dc.subject.other | Suzuki-Miyaura reaction |
dc.title | Room-temperature Suzuki-Miyaura reaction catalyzed by Pd supported on rare earth oxides: Influence of the point of zero charge on the catalytic activity |
dc.type | Article |
dc.subject.lemac | Reaccions químiques |
dc.subject.lemac | Geoquímica ambiental |
dc.contributor.group | Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions |
dc.identifier.doi | 10.1007/s10562-013-1008-4 |
dc.relation.publisherversion | http://link.springer.com/article/10.1007%2Fs10562-013-1008-4 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 12738644 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | Amoroso, F.; Colussi, S.; Del Zotto, A.; Llorca, J.; Trovarelli, A. |
local.citation.publicationName | Catalysis letters |
local.citation.volume | 143 |
local.citation.number | 6 |
local.citation.startingPage | 547 |
local.citation.endingPage | 554 |
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