Hydrogenation of cinnamaldehyde has been investigated over a series of Ru-Sn/C catalysts having various Sn/Ru ratios. Addition of tin to Ru/C decreases the CO chemisorption capability of the catalyst. The overall turnover frequency of cinnamaldehyde disappearance and the selectivity to cinnamyl alcohol increase with the Sn/Ru ratio. It is suggested that hydrogenation of the CO group occurs on sites associated with tin ions. On these sites the carbonyl group is polarized, facilitating hydrogen transfer from an adjacent RuH site.
Selective Hydrogenation of Cinnamaldehyde over Ru-Sn Catalysts / S., Galvagno; A., Donato; G., Neri; R., Pietropaolo; G., Capannelli; Donato, Andrea. - In: JOURNAL OF MOLECULAR CATALYSIS. - ISSN 0304-5102. - 78:(1993), pp. 227-236.
Selective Hydrogenation of Cinnamaldehyde over Ru-Sn Catalysts
DONATO, Andrea
1993-01-01
Abstract
Hydrogenation of cinnamaldehyde has been investigated over a series of Ru-Sn/C catalysts having various Sn/Ru ratios. Addition of tin to Ru/C decreases the CO chemisorption capability of the catalyst. The overall turnover frequency of cinnamaldehyde disappearance and the selectivity to cinnamyl alcohol increase with the Sn/Ru ratio. It is suggested that hydrogenation of the CO group occurs on sites associated with tin ions. On these sites the carbonyl group is polarized, facilitating hydrogen transfer from an adjacent RuH site.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
