Chemoselective hydrogenation of citral by Pt and Pt-Sn catalysts supported on TiO₂ nanoparticles and nanowires

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Anne-Riikka Rautio, Päivi Mäki-Arvela, Atte Aho, Kari Eränen, Krisztian Kordas
Publiceringsår: 2015
Tidskrift: Catalysis Today
Volym: 241
Nummer: Part B
Artikelns första sida, sidnummer: 170
Artikelns sista sida, sidnummer: 178
eISSN: 1873-4308


Abstrakt

Chemoselective hydrogenation of citral is studied over platinum catalyst supported on titanium dioxide nanoparticles and nanowires. The support is found to have considerable effect on both selectivity and activity. Because of the presence of weak basic sites on the nanowire support, the platinum catalyst shows significantly higher activity and better selectivity towards citronellal than that obtained by the catalyst based on TiO2 nanoparticles having mainly medium strong basic sites. Furthermore, addition of tin promoter to the platinum catalyst decreases the initial rate of reaction and increases the selectivity towards unsaturated alcohols such as nerol and geraniol. The catalytic activity studies are complemented by chemical composition, surface adsorption and structural analyses of the applied catalyst materials assessed by the means of X-ray photoelectron spectroscopy, energy-dispersive X-ray analysis, temperature programmed reduction, H2 and CO2 desorption, CO chemisorption, electron microscopy and X-ray diffraction, respectively.

Senast uppdaterad 2019-16-10 vid 02:35