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US 7,442,747 B1Granted
Sulfur-functionalized carbon nanoarchitectures as porous, high surface area supports for precious metal catalysts
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsJeffrey W Long, Debra R Rolison, Wendy Baker
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Abstract
The invention relates to sulfur-functionalized polymer gels and carbon gels, including aerogels, and such carbon gels containing platinum or metal nanoparticles. The platinum-containing gels may be useful as fuel-cell electrodes.
Claims8
A polymer gel comprising a sulfur group, wherein the polymer gel is made by a process comprising the steps of:
- reacting a phenol with formaldehyde in a condensation reaction to form a precursor gel;
- and
- reacting the precursor gel with a sulfur compound;
- wherein the sulfur compound comprises a sulfur atom and an aldehyde group.
1 more element
A method of making a composite, comprising the steps of:
- reacting a phenol with formaldehyde in a condensation reaction to form a precursor gel;
- and
- reacting the precursor gel with a sulfur compound to form a sulfur-modified gel;
- wherein the sulfur compound comprises a sulfur atom and an aldehyde group.
1 more element
Dependencies are inferred from the claim text.