The Preparation & Catalytic Applications of Silica. Final Report Page: 1 of 8
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06/30/03
To: Department of Energy
Re: Final Report
DE-FG02-96ER14594
From: Richard D Gonzalez,
Department of Chemical Engineering
Tulane University, New Orleans, La. 70118
This final report covers the entire period from its inception in 11/01/1985 through the
final funding period, 10/30/2002. The grant was initiated when the PI was on the Faculty
in the Department of Chemical Engineering at the University of Illinois at Chicago and
continued without interruption when he moved to Tulane University in August 1990. The
designation number on the award may have changed as a result of a shift from Argonne
National Laboratory to Oak Ridge and then back to Argonne. This report covers several
areas of research, which will be covered separately as follows:
(1) Precursor- Support Interactions and their Effect on the Surface Composition
of Bimetallic Clusters.
Of particular interest is the observation that the surface compositions of supported
bimetallic clusters are a strong function of pretreatment variables rather than
thermodynamic equilibrium considerations, which are rarely achieved under synthesis
conditions. In performing these studies two new techniques were developed which
enabled us to determine both the surface and bulk composition of the bimetallic particles.
These techniques include the use of selective surface titration methods (references
2,5,6,8,11) and energy dispersive spectroscopy (references 6,11,13,).
The rate at which surface precursor species diffuse under different pretreatment
conditions is a very important variable in controlling the surface composition ofsupported
bimetallc particles. These studies are detailed in references 6,8,12,13,14,19.
(2) Catalyst Synthesis Using Sol-Gel Chemistry
The use of sol-gel chemistry in the synthesis of catalytic materials has been the
focus of our attention for many years. The advantage that it offers over traditional
methods such as impregnation and ion exchange include: low temperature processing, the
synthesis of high surface area materials, the synthesis of thermally resistant materials
with well defined pore size distributions and, the synthesis of supported metal catalysts
with a sharp metal size distribution. These studies are detailed in references
17,18,20,23,25,26,28,31,32,34,39,41.
DOE Patent Clearance Granted
Mark P Dvorscak D to
(630) 252-2393
E-mail: mark.dvorscak@ch.doe.gov
Office of Intellectual Property Law
DOE Chicago Operations Office
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Gonzales, R. The Preparation & Catalytic Applications of Silica. Final Report, report, December 31, 1985; United States. (https://digital.library.unt.edu/ark:/67531/metadc780722/m1/1/: accessed March 29, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.