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Nanocrystal assembly for tandem catalysis

United States Patent

October 14, 2014
View the Complete Patent at the US Patent & Trademark Office
Lawrence Berkeley National Laboratory - Visit the Technology Transfer and Intellectual Property Management Department Website
The present invention provides a nanocrystal tandem catalyst comprising at least two metal-metal oxide interfaces for the catalysis of sequential reactions. One embodiment utilizes a nanocrystal bilayer structure formed by assembling sub-10 nm platinum and cerium oxide nanocube monolayers on a silica substrate. The two distinct metal-metal oxide interfaces, CeO.sub.2--Pt and Pt--SiO.sub.2, can be used to catalyze two distinct sequential reactions. The CeO.sub.2--Pt interface catalyzed methanol decomposition to produce CO and H.sub.2, which were then subsequently used for ethylene hydroformylation catalyzed by the nearby Pt--SiO.sub.2 interface. Consequently, propanal was selectively produced on this nanocrystal bilayer tandem catalyst.
Yang; Peidong (Kensington, CA), Somorjai; Gabor (Berkeley, CA), Yamada; Yusuke (Osaka, JP), Tsung; Chia-Kuang (Allston, MA), Huang; Wenyu (Albany, CA)
The Regents of the University of California (Oakland, CA)
13/ 441,240
April 6, 2012
STATEMENT OF GOVERNMENT SUPPORT This invention was made with government support under Contract No. DE-AC02-05CH11231 awarded by the U.S. Department of Energy to the Regents of the University of California for the operation and management of the Lawrence Berkeley National Laboratory. The government has certain rights in this invention.