Dynamic isotopic modeling of ethylene hydrogenation and hydroformylation over metal catalysts

Hydroformylation is the reaction of an olefin with CO and H;A combined in situ infrared (IR) and dynamic isotopic substitution technique was utilized to achieve the objectives. All three reactants were isotopically substituted: ;This study demonstrated that an isotope effect is present for ;This study demonstrates the effectiveness coupling isotopic transient substitution and in situ infrared spectroscopy to study heterogeneous hydroformylation. From the information obtained in this study, it is recommended to use the Mn promoter and to prepare a highly disperse catalyst to enhance acyl species formation. It is also suggested to enhance the hydrogen spillover capability of the catalyst since it preferentially reacts with adsorbed acyl species. In conclusion, the techniques used in this study can be applied to investigate the mechanism of a large number of industrial heterogeneous catalytic reactions. (Abstract shortened by UMI.).;This objective of this dissertation is to investigate heterogeneous hydroformylation mechanism over Rh/SiO...