Influence of the support composition and acidity on the catalytic properties of mesoporous SBA-15, Al-SBA-15, and Al2O 3-supported Pt catalysts for cinnamaldehyde hydrogenation

Soraya Handjani, Eric Marceau*, Juliette Blanchard, Jean-Marc Krafft, Michel Che, Päivi Mäki-Arvela, Narendra Kumar, Johan Wärnå, Dmitry Yu Murzin

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

68 Sitaatiot (Scopus)

Abstrakti

Three Pt catalysts exhibiting similar metal particles size (<2 nm) were prepared on mesoporous supports differing by their chemical composition and tested in the liquid phase hydrogenation of cinnamaldehyde. The hydrogenation of the CC bond was favored with Pt/SBA-15 and Pt/Al-SBA-15, with significantly higher reaction rates on the latter catalyst. The acidic support changes the adsorptive properties of the platinum nanoparticles, modifying their surface electron density and possibly their morphology. In contrast, Pt/Al 2O3 was the most selective catalyst of the series toward cinnamyl alcohol, with CC and CO hydrogenations taking place at the same rate. The presence of Lewis acidic sites close to the particles is assumed to favor the adsorption of molecules via their polar CO bond. Even if cinnamaldehyde hydrogenation does not require acidic sites to be performed, the composition and acidity of the support significantly influence the reaction rate and selectivity.

AlkuperäiskieliEnglanti
Sivut228-236
Sivumäärä9
JulkaisuJournal of Catalysis
Vuosikerta282
Numero1
DOI - pysyväislinkit
TilaJulkaistu - 15 elokuuta 2011
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Sormenjälki

Sukella tutkimusaiheisiin 'Influence of the support composition and acidity on the catalytic properties of mesoporous SBA-15, Al-SBA-15, and Al<sub>2</sub>O <sub>3</sub>-supported Pt catalysts for cinnamaldehyde hydrogenation'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

Viittausmuodot