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Title: Subnanometer and nanometer catalysts, method for preparing size-selected catalysts

Abstract

Highly uniform cluster based nanocatalysts supported on technologically relevant supports were synthesized for reactions of top industrial relevance. The Pt-cluster based catalysts outperformed the very best reported ODHP catalyst in both activity (by up to two orders of magnitude higher turn-over frequencies) and in selectivity. The results clearly demonstrate that highly dispersed ultra-small Pt clusters precisely localized on high-surface area supports can lead to affordable new catalysts for highly efficient and economic propene production, including considerably simplified separation of the final product. The combined GISAXS-mass spectrometry provides an excellent tool to monitor the evolution of size and shape of nanocatalyst at action under realistic conditions. Also provided are sub-nanometer gold and sub-nanometer to few nm size-selected silver catalysts which possess size dependent tunable catalytic properties in the epoxidation of alkenes. Invented size-selected cluster deposition provides a unique tool to tune material properties by atom-by-atom fashion, which can be stabilized by protective overcoats.

Inventors:
 [1];  [2];  [3];  [2];  [4];  [5]
  1. Lisle, IL
  2. Naperville, IL
  3. Elmhurst, IL
  4. Downers Grove, IL
  5. Roggentin, GR
Issue Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1039199
Patent Number(s):
8143189
Application Number:
12/402,948
Assignee:
UChicago Argonne, LLC (Chicago, IL)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats

Vajda, Stefan, Pellin, Michael J, Elam, Jeffrey W, Marshall, Christopher L, Winans, Randall A, and Meiwes-Broer, Karl-Heinz. Subnanometer and nanometer catalysts, method for preparing size-selected catalysts. United States: N. p., 2012. Web.
Vajda, Stefan, Pellin, Michael J, Elam, Jeffrey W, Marshall, Christopher L, Winans, Randall A, & Meiwes-Broer, Karl-Heinz. Subnanometer and nanometer catalysts, method for preparing size-selected catalysts. United States.
Vajda, Stefan, Pellin, Michael J, Elam, Jeffrey W, Marshall, Christopher L, Winans, Randall A, and Meiwes-Broer, Karl-Heinz. Tue . "Subnanometer and nanometer catalysts, method for preparing size-selected catalysts". United States. https://www.osti.gov/servlets/purl/1039199.
@article{osti_1039199,
title = {Subnanometer and nanometer catalysts, method for preparing size-selected catalysts},
author = {Vajda, Stefan and Pellin, Michael J and Elam, Jeffrey W and Marshall, Christopher L and Winans, Randall A and Meiwes-Broer, Karl-Heinz},
abstractNote = {Highly uniform cluster based nanocatalysts supported on technologically relevant supports were synthesized for reactions of top industrial relevance. The Pt-cluster based catalysts outperformed the very best reported ODHP catalyst in both activity (by up to two orders of magnitude higher turn-over frequencies) and in selectivity. The results clearly demonstrate that highly dispersed ultra-small Pt clusters precisely localized on high-surface area supports can lead to affordable new catalysts for highly efficient and economic propene production, including considerably simplified separation of the final product. The combined GISAXS-mass spectrometry provides an excellent tool to monitor the evolution of size and shape of nanocatalyst at action under realistic conditions. Also provided are sub-nanometer gold and sub-nanometer to few nm size-selected silver catalysts which possess size dependent tunable catalytic properties in the epoxidation of alkenes. Invented size-selected cluster deposition provides a unique tool to tune material properties by atom-by-atom fashion, which can be stabilized by protective overcoats.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 27 00:00:00 EDT 2012},
month = {Tue Mar 27 00:00:00 EDT 2012}
}

Works referenced in this record:

Controlled growth of tin dioxide thin films by atomic layer epitaxy
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Oxidative dehydrogenation of ethane and propane at short contact time
journal, November 2004


Effect of Catalyst Structure on Oxidative Dehydrogenation of Ethane and Propane on Alumina-Supported Vanadia
journal, May 2002