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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];  [4];  [5]
  1. (Lisle, IL), Pellin, Michael J. (Naperville, IL)
  2. Elmhurst, IL
  3. Naperville, IL
  4. Downers Grove, IL
  5. Roggentin, GR
Issue Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1041039
Patent Number(s):
8148293
Application Number:
12/869,459
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
C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL
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, 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, 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, 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/1041039.
@article{osti_1041039,
title = {Subnanometer and nanometer catalysts, method for preparing size-selected catalysts},
author = {Vajda, Stefan 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 = {2012},
month = {4}
}

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Works referenced in this record:

Controlled growth of tin dioxide thin films by atomic layer epitaxy
journal, September 1994


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


Subnanometre platinum clusters as highly active and selective catalysts for the oxidative dehydrogenation of propane
journal, February 2009