Novel Reforming Catalysts Page: 1 of 7
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Final Report: "Novel Reforming Catalysts"
DOE, Office of Basic Energy Sciences, grant FG02-05ER15732
Professors Lisa Pfefferle and Gary Haller
Yale University, Chemical Engineering
P.O. Box 8286
New Haven, CT 06520-8286
Phone: (203)-432-4377; FAX: (203)-432-4387
E-mail: lisa.pfefferle@yale.edu
DOE Program Officer: Raul Miranda
Phone: 301-903-8014
E-mail: Raul.Miranda@science.doe.gov
Objectives
1. Investigate the stabilization of Co and Ni by MCM-41 incorporation for the
reverse reforming reactions such as methanation of CO and CO2. Compare these
results with the same reactions on Co supported on single-walled carbon
nanotubes (SWNT).
2. Develop carbon nanotubes as a support for aqueous phase reforming reactions
on Co, Pt and bimetallic catalysts.
3. Do a feasibility study of nanotube-based catalysts for photocatalytic generation
of hydrogen for methanol/water.
Technical Barriers
The technical barriers to aqueous phase reforming have been related to catalyst
stability: silica in the form of structured MCM-41 is thermally a more stable
support for Co and Ni than conventional high surface area amorphous silica but
hydrothermal stability is not demonstrated. Carbon nanotube supports, in
contrast, are highly stable under hydrothermal reaction conditions. A technical
barrier to the use of SWNT as supports is the possible need to functionalize them
to counter bundling in the aqueous environment and to graft the catalyst to the
carbon tube to maintain a high dispersion.
Abstract
Our goal is development of novel reforming catalysts, e.g., stable low temperature
aqueous reforming catalysts for oxygenated reactants. This reaction currently requires
difficult reactors and analyses. Our strategy has been to screen carbon supported catalysts
for reactivity by a reverse reaction, CO methanation, which is simpler (in number of
mechanistic steps, reactor design, product analyses, etc.), and then to perform stability
tests under actual aqueous reforming conditions. This is the order in which the results are
presented.
CO and CO2 Methanation on MCM-41 and SWNT supported Catalysts:
Carbon monoxide methanation was chosen as the probe catalytic reaction to compare
the carbon nanotube supported Co catalyst with well defined Co incorporated MCM-41
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Pfefferle, Lisa D & Haller, Gary L. Novel Reforming Catalysts, report, October 16, 2012; United States. (https://digital.library.unt.edu/ark:/67531/metadc840990/m1/1/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.