Interaction between ketopantolactone and chirally modified Pt investigated by attenuated total reflection IR concentration modulation spectroscopy.
The combination of ATR-IR and modulation spectroscopy allowed for the study of the interaction of ketopantolactone with Pt/Al2O3 films chirally modified by cinchonidine under hydrogenation conditions. The spectra reveal a significant influence of ketopantolactone on the adsorption of the modifier and indicate a N-H-O hydrogen bond between modifier and reactant. The latter was corroborated by a comparative study with N-methyl cinchonidine chloride modified Pt/Al2O3.
Institute for Chemical and Bioengineering, ETH-Hönggerberg, HCI, CH-8093 Zurich, Switzerland.
Norberto
N
Bonalumi
Thomas
T
Bürgi
Alfons
A
Baiker
D015107:4-Butyrolactone / Q000031:analogs & derivatives* / Q000737:chemistry*; D000537:Aluminum Oxide / Q000737:chemistry; D002930:Cinchona Alkaloids / Q000737:chemistry; D010984:Platinum / Q000737:chemistry*; D013055:Spectrophotometry, Infrared / Q000379:methods; D013237:Stereoisomerism
D002930:Cinchona Alkaloids; C008232:keto-pantoyllactone; C041622:cinchonidine; D010984:Platinum; D000537:Aluminum Oxide; D015107:4-Butyrolactone