University of Utah Research Foundation

The Dow Chemical Company

Syracuse University

Richard D Ernst

David R Wilson

Peter N Nickias

David R Neithamer

Brian C Dunn

Edward M Eyring

Gregory C Turpin

James T Spencer

Ceria-coated aerogels can include an aerogel support material having a stabilized ceria coating thereon. The ceria coating can be formed by solution or vapor deposition of alcogels or aerogels. Additional catalytic metal species can also be incorporated into the coating to form multi-metallic compounds having improved catalytic activity. Further, the ceria coated aerogels retain high surface areas at elevated temperatures. Thus, improvements in catalytic activity and thermal stability can be achieved using these ceria-coated composite aerogels.

Composite ceria-coated aerogels and methods of making the same

A method for forming multi-metallic sites on a substrate is disclosed and described. A substrate including active groups such as hydroxyl can be reacted with a pretarget metal complex. The target metal attached to the active group can then be reacted with a secondary metal complex such that an oxidation-reduction (redox) reaction occurs to form a multi-metallic species. The substrate can be a highly porous material such as aerogels, xerogels, zeolites, and similar materials. Additional metal complexes can be reacted to increase catalyst loading or control co-catalyst content. The resulting compounds can be oxidized to form oxides or reduced to form metals in the ground state which are suitable for practical use.

Methods of selectively incorporating metals onto substrates

Catalytic derivatives of novel Group 4 metal complexes wherein the metal is in the +2, +3, or +4 formal oxidation state containing two ligand groups bound by .pi.-electrons, at least one of which is a cyclic or noncyclic, non-aromatic, anionic, dienyl ligand group and having a bridged ligand structure, and the use thereof as catalysts for polymerizing addition polymerizable monomers are disclosed.

Metal complexes containing bridged, non-aromatic, anionic, dienyl groups

Novel Group 4 metal complexes wherein the metal is in the +2, +3, or +4 formal oxidation state containing two ligand groups bound by n-electrons, at least one of which is a cyclic or noncyclic, non-aromatic, anionic, dienyl ligand group and having a bridged ligand structure, catalytic derivatives of such complexes; and the use thereof as catalysts for polymerizing addition polymerizable monomers are disclosed.

Metal complexes containing bridged non-aromatic, anionic, dienyl groups

Vapor deposition of metal films is carried out using as precursors metal compounds or complexes based on open pentadienyls and derivatives. The technique can be used favorably for transition metal depositions, and can be carried out photolytically or thermolytically. In certain cases, oxygen can be substituted for a terminal carbon atom.

Growing community of inventors

Salt Lake City, UT, United States of America

Richard D Ernst