Several catalysts based on [RhMo6O24H6](3-) (RhMo6) heteropolyanion supported on gamma-Al2O3 with different textural properties were prepared, characterized and tested in the liquid-phase hydrogenation of cinnamaldehyde. The characterization of pure and supported systems was carried out using several techniques including XRD, SEM-EDS microscopy, Raman microprobe, X-ray photoelectron spectroscopies and temperature programmed reduction (TPR). The catalytic performance was monitored by conversion of the starting cinnamaldehyde as a function of time: the initial activities represented as the turnover frequency (TOF), were measured considering the surface Rh atoms. The planar heteropolyanion RhMo6/(EI) based systems showed enhanced catalytic activity over the RhMo conventional catalyst obtained by successive impregnation of both transition metal ions (Rh(III) chloride and heptamolybdate). The selectivity for the RhMo6 systems was mainly toward HCAL unlike the conventional catalyst which showed selectivity toward CA. This study also showed a synergetic effect between Rh and Mo through which Rh promoted Mo reducibility. (c) 2012 Elsevier B.V. All rights reserved.

Catalysts based on Rh(III)-hexamolybdate/gamma-Al2O3 and their application in the selective hydrogenation of cinnamaldehyde to hydrocinnamaldehyde / Guillermo R., Bertolini; Carmen I., Cabello; Mercedes, Munoz; Monica, Casella; Gazzoli, Delia; Pettiti, Ida; Giovanni, Ferraris. - In: JOURNAL OF MOLECULAR CATALYSIS. A: CHEMICAL. - ISSN 1381-1169. - STAMPA. - 366:(2013), pp. 109-115. [10.1016/j.molcata.2012.09.013]

Catalysts based on Rh(III)-hexamolybdate/gamma-Al2O3 and their application in the selective hydrogenation of cinnamaldehyde to hydrocinnamaldehyde

GAZZOLI, DELIA;PETTITI, Ida;
2013

Abstract

Several catalysts based on [RhMo6O24H6](3-) (RhMo6) heteropolyanion supported on gamma-Al2O3 with different textural properties were prepared, characterized and tested in the liquid-phase hydrogenation of cinnamaldehyde. The characterization of pure and supported systems was carried out using several techniques including XRD, SEM-EDS microscopy, Raman microprobe, X-ray photoelectron spectroscopies and temperature programmed reduction (TPR). The catalytic performance was monitored by conversion of the starting cinnamaldehyde as a function of time: the initial activities represented as the turnover frequency (TOF), were measured considering the surface Rh atoms. The planar heteropolyanion RhMo6/(EI) based systems showed enhanced catalytic activity over the RhMo conventional catalyst obtained by successive impregnation of both transition metal ions (Rh(III) chloride and heptamolybdate). The selectivity for the RhMo6 systems was mainly toward HCAL unlike the conventional catalyst which showed selectivity toward CA. This study also showed a synergetic effect between Rh and Mo through which Rh promoted Mo reducibility. (c) 2012 Elsevier B.V. All rights reserved.
2013
rhmo6/gamma-al2o3; selective hydrogenation; cinnamaldehyde; hydrocinnamaldehyde; heteropolyoxomolybdates; anderson phases of rh(iii); rhmo6/ γ-al2o3
01 Pubblicazione su rivista::01a Articolo in rivista
Catalysts based on Rh(III)-hexamolybdate/gamma-Al2O3 and their application in the selective hydrogenation of cinnamaldehyde to hydrocinnamaldehyde / Guillermo R., Bertolini; Carmen I., Cabello; Mercedes, Munoz; Monica, Casella; Gazzoli, Delia; Pettiti, Ida; Giovanni, Ferraris. - In: JOURNAL OF MOLECULAR CATALYSIS. A: CHEMICAL. - ISSN 1381-1169. - STAMPA. - 366:(2013), pp. 109-115. [10.1016/j.molcata.2012.09.013]
File allegati a questo prodotto
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/491917
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 20
  • ???jsp.display-item.citation.isi??? 21
social impact