ZHANG Qi, DAI Wei, MU Wei, et al. Pd-Ag/ Al2O3 and Pd/ Al2O3 catalysts for selective hydrogenation of ethyne with in-situ DRIFTS[J]. CIESC Journal, 2011, (1): 71-77.
ZHANG Qi, DAI Wei, MU Wei, et al. Pd-Ag/ Al2O3 and Pd/ Al2O3 catalysts for selective hydrogenation of ethyne with in-situ DRIFTS[J]. CIESC Journal, 2011, (1): 71-77.DOI:
Using carbon monoxide and acetylene as probe molecule
their adsorption and acetylene hydrogenation on Pd-Ag/ Al2O3 and Pd/ Al2O3 catalysts were studied by in-situ DRIFTS.Hydrogenation of acetylene and CO chemisorptions properties over surface of catalysts were investigated.The results showed that the catalyst surface state and its properties were changed by addition of Ag into Pd/ Al2O3 due to both geometric and electronic effects.During adsorption and hydrogenation of acetylene
formation of carbonaceous layer that may become green oil and have great effect on the reaction selectivity to ethylene
was observed on catalyst surface.From the infrared spectra
long-chain alkane was tentatively identified as being present in the carbonaceous layer.