Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 118, Issue 1, Pages 551-558Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp410878j
Keywords
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Funding
- POLYCAT project
- European Community [CP-IP 246095]
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The reaction path leading to the partial and total reduction of alkynols and alkyndiols with general formula R-CH2-C C-CH(OH)-R' and R-CH(OH)-C C-CH(OH)-R' (R, R' = H, CH3) on a D-3h symmetry Pd-9 cluster where atomic hydrogen is available have been analyzed by means of calculations based on density functional theory. The results, analyzed and discussed in atomistic details, suggest that small palladium clusters could be selective on the partial hydrogenation of triple bonds. The first energy barrier for the hydrogenation of the alkene derivatives is in fact much higher than the one corresponding to the hydrogenation of the triple bond. Further, the products of the partial hydrogenation, also when adsorbed on the Pd-9 cluster, are largely more stable than the corresponding alkynol or alkyndiol parents.
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