Catalytic Properties of Palladium Nanoparticles Deposited on Undoped and Nitrogen Doped Carbon Nanofibres in Selective Hydrogenation of Acetylene
VLADIMIR V. CHESNOKOV1,2, OLGA YU. PODYACHEVA1,2, ZINFER R. ISMAGILOV1,2
1Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
chesn@catalysis.ru
2Institute of Coal Chemistry and Material Science, Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences, Kemerovo, Russia
pod@catalysis.ru
Ключевые слова: palladium nanoparticles, carbon nanofibres, nitrogen doping, hydrogenation
Страницы: 521-527
Аннотация
Palladium in the concentration of 0.04-0.5 mass % was deposited on carbon nanofibres with the stack structure. The state of finely dispersed palladium nanoparticles deposited on the carbon nanofibres was studied by physical methods. Decrease of the concentration of supported palladium on the carbon nanofibres below 0.2 mass % led to the stabilization of the metal in atomic state. It was found that palladium nanoparticles in the atomic state were responsible for the high selectivity of the catalyst in acetylene hydrogenation to ethylene. Doping of carbon nanofibres by nitrogen atoms substantially alters the properties of supported palladium nanoparticles. The activity of the catalysts decreases whereas their selectivity substantially increases
DOI: 10.15372/KhUR20160412 |
