Ethylene hydrogenation is a prototypical reaction for catalytic hydrogenation of unsaturated hydrocarbons and as such it has been studied on a number of metals. On single crystalline Pd(111), Pd(110), and Pd(100) surfaces this reaction has been shown to be structure insensitive and to occur with extremely low yield (0.1%) (refs). Recent studies on support4ed Pd particles showed an approximately 10-folded increase in the ethane yield per surface Pd atom which was attributed to the increased surface to bulk Pd ratio on the particles thereby giving rise to reduced sorption of hydrogen into the bulk. The enhanced concentration of surface hydrogen is believed to result in the observed increase in catalytic activity. Even on these nanoparticles the C2H6 yield is relatively low (~2%)(refs).
Revised: January 21, 2009 |
Published: October 9, 2008
Citation
Dohnalek Z., J. Kim, and B.D. Kay. 2008.Understanding How Surface Morphology and Hydrogen Dissolution Influence Ethylene Hydrogenation on Palladium.Journal of Physical Chemistry C 112, no. 40:15796-15801.PNNL-SA-51220.doi:10.1021/jp803880x