Development of a Colloidal Redox System Containing a Smectite Clay for Control of Reactivity and Reaction Selectivity
Abstract
This project is directed towards the development of colloidal redox systems involving smectite clays:. Two polypyridylosmium(II) complexes containing ligands bearing anionic pendant groups have been synthesized. Each complex has been successfully incorporated into stable montmorillonite colloids. Approximately 96 - 99% of the complex adsorbs onto the colloidal montmorillonite for loadings up to 1 mmole/g. These findings demonstrate the utility of adding a negatively charged side group to a complex to prevent simultaneous adsorption of the complex on two clay particles, which produces flocculation. Electrochemical studies of these colloidal redox systems indicate that at least part of the clay-adsorbed complex is accessible for electron transfer. These properties are prerequisites for the development of new catalytic systems based upon the incorporation of transition-metal catalysts into clay colloids. In order to develop such a system, two bipolar aquaruthenium(II) catalysts have been synthesized. These aquaruthenium(II) catalysts can also be incorporated into stable montmorillonite colloids. Characterization of clay colloids containing these catalysts is in progress.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 26, 1994
- Accession Number
- ADA285958
Entities
People
- David N. Blauch
Organizations
- Davidson College