Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon
Patent
1997-07-05
1999-08-31
Foelak, Morton
Chemistry of inorganic compounds
Carbon or compound thereof
Elemental carbon
264 291, 264 295, 423445R, 501 99, 502418, 521 63, 521 64, 521181, 521136, 521918, D01F 912, C08J 928
Patent
active
059450843
ABSTRACT:
This pertains to the general field of gels, foams, and aerogels, particularly, to low density open cell organic foams and low density open cell carbon foams, and methods for preparing them. These low density open cell organic foams are derived from organic gels which may be prepared from hydroxylated benzenes (such as phenol, catechol, resorcinol, hydroquinone, and phloroglucinol) and aldehydes (such as formaldehyde and furfural) using lower than conventional catalyst concentrations (e.g, an R/C value of greater than about 1000, yielding an initial room temperature pH typically lower than about 6.0). These organic foams are characterized by relatively large particle and pore sizes, high porosity, and high surface area. Low density open cell carbon foams derived from such organic foams are also shown, as are methods for preparing same. These carbon foams are also characterized by relatively large particle and pore sizes, high porosity, high surface area, and high electrical capacitance. Low density open cell carbon foam/carbon substrate composites and methods for preparing them are also shown.
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Foelak Morton
Ocellus, Inc.
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