201 |
Aerogel and metallic compositions |
US10327300 |
2002-12-20 |
US20040029982A1 |
2004-02-12 |
Can
Erkey; Hiroaki
S.
Hara |
Metallic aerogel compositions comprising an aerogel, e.g., RF or carbon aerogel, having metallic particles dispersed on its surface are disclosed. The aerogel compositions can have a uniform distribution of small metallic particles, e.g., 1 nanometer average particle diameter. Also disclosed are processes for making the aerogel compositions comprising contacting an aerogel with a supercritical fluid containing a metallic compound. The aerogel compositions are useful, for example in the manufacture of fuel cell electrodes. |
202 |
Carbon foam, graphite foam and production processes of these |
US10052737 |
2002-01-23 |
US06689336B2 |
2004-02-10 |
Koichi Kanno; Hirotaka Tsuruya; Ryuji Fujiura; Takeshi Koshikawa; Fumitaka Watanabe |
A carbon foam obtained by heat-treating a mesophase pitch whose softening point is 300° C. or less according to an elevated flow tester, whose ratio (Daromatic/Daliphatic) of the absorption intensity of an aromatic C—H stretching vibration, measured with FT-IR, to the absorption intensity of an aliphatic C—H stretching vibration, measured with FT-IR, is 4.0 or less and whose optically anisotropic content is at least 80%, a graphite foam obtained by heat-treating the carbon foam recited above at a temperature of 2,000° C. or higher and production processes of these. |
203 |
Porous carbons |
US10344248 |
2003-05-29 |
US20040024074A1 |
2004-02-05 |
Stephen
Robert
Tennison; Oleksandr
Prokopovych
Kozynchenko; Volodymyr
Vasyljovych
Strelko; Andrew
John
Blackburn |
A porous resin which can be carbonised to a mesoporous carbon can be made by cross-linking a phenolformaldehyde pre-polymer in the presence of a pore former;, preferably ethylene glycol in an amount of at least 120 parts by weigh of ethylene glycol per 100 parts resin and carbonising the resin formed. The resin can be formed in situ by condensing a phenol with/without modifying agents with cross-linking agent by pouring the partially cross-linked resin into hot oil mesoporous resin beads are obtained which can be carbonised to mesoporous carbon beads. |
204 |
Synthesis of macroporous structures |
US09549078 |
2000-04-15 |
US06680013B1 |
2004-01-20 |
Andreas Stein; Brian T. Holland; Christopher F. Blanford; Hongwei Yan |
The present application discloses a method of forming an inorganic macroporous material. In some embodiments, the method includes: providing a sample of organic polymer particles having a particle size distribution of no greater than about 10%; forming a colloidal crystal template of the sample of organic polymer particles, the colloidal crystal template including a plurality of organic polymer particles and interstitial spaces therebetween; adding an inorganic precursor composition including a noncolloidal inorganic precursor to the colloidal crystal template such that the precursor composition permeates the interstitial spaces between the organic polymer particles; converting the noncolloidal inorganic precursor to a hardened inorganic framework; and removing the colloidal crystal template from the hardened inorganic framework to form a macroporous material. Inorganic macroporous materials are also disclosed. |
205 |
Methods for making microporous ceramic materials |
US10367713 |
2003-02-19 |
US20040009865A1 |
2004-01-15 |
Balagopal
N.
Nair; Yasunori
Ando; Hisatomi
Taguchi; Shigeo
Nagaya; Kiyoshi
Komura |
The present invention provides a method for making a microporous ceramic material and includes the steps of (a) preparing a starting material for firing comprising a nonoxide ceramic precursor containing silicon as an essential component; (b) heating the starting material for firing in an atmosphere containing at least 1 mol % of hydrogen so as to form microporous ceramic product; and (c) cooling the microporous ceramic product. |
206 |
Process for producing activated graphitic foam with high surface area |
US10174838 |
2002-06-18 |
US20030232897A1 |
2003-12-18 |
Dennis
M.
Pfister; Charles
M.
Byrd |
A process for producing graphitic foam comprises mixing a first amount of an activated first carbon precursor with a second amount of a second carbon precursor, heating the mixture of the activated first and the second carbon precursors to a temperature sufficient to coalesce the mixture into a liquid, foaming the mixture, heating the foam under an inert atmosphere to a temperature and for a length of time sufficient to carbonize the foam, and heating the carbonized foam under an inert atmosphere to a temperature and for a length of time sufficient to graphitize the foam. |
207 |
Building structures |
US09879820 |
2001-06-11 |
US06631603B2 |
2003-10-14 |
David A. Zornes |
A building structure offset uses hexagon structures assembled in an offset layering architecture to construct walls, floors and roofs. Hexagon building structures include interior panels adhered to both sides of a foam core. The structures also include radial cutouts the corners for offset layering assembly with another structure. Peg retainers selectively secure the hexagon building structures together. Fastening holes provide fastener locations for screwing or bolting through the layers of the hexagon structures. The holes align with an offset layer of hexagons when assembled in the axial direction. Conduit holes are selectively located depending on the fastening technique selected. The system includes five derivatives of hexagon building structures and a header, providing square, triangular, and curved geometries when assembled. Since hexagon buildings are built from hexagon building structures without customization, hexagon buildings can be rebuilt, modified, or recycled using the same materials. |
208 |
Synthesis of microporous ceramics |
US08668640 |
1996-06-21 |
US06624228B1 |
2003-09-23 |
John Pickett Dismukes; Jack Wayne Johnson; Edward William Corcoran, Jr.; Joseph Vallone |
The present invention provides for microporous ceramic materials having a surface area in excess of 50 m2/gm and an open microporous cell structure wherein the micropores have a mean width of less than 20 Angstroms and wherein said microporous structure comprises a volume of greater than about 0.015 cm3/gm of the ceramic. The invention also provides for a preceramic composite intermediate composition comprising a mixture of a ceramic precursor and finely divided particles comprising a non-silicon containing ceramic, carbon, or an inorganic compound having a decomposition temperature in excess of 400° C., whose pyrolysis product in inert atmosphere or in an ammonia atmosphere at temperatures of up to less than about 1100° C. gives rise to the microporous ceramics of the invention. Also provided is a process for the preparation of the microporous ceramics of the invention involving pyrolysis of the ceramic intermediate under controlled conditions of heating up to temperatures of less than 1100° C. to form a microporous ceramic product. |
209 |
Novel carbon materials and carbon/carbon composites based on modified poly (phenylene ether) for energy production and storage devices, and methods of making them |
US09968290 |
2001-10-01 |
US20030161781A1 |
2003-08-28 |
Israel
Cabasso; Han
Liu; Suoding
Li; Youxin
Yuan |
It is MPPE based polymeric carbon materials with high electric and gas conductivity, large surface area with narrow pore size distribution, good mechanical strength, versatile applications and ease of manufacturing. The carbon material can be in the form of carbon powder, carbon fiber reinforced sheets or other types of carbon/carbon composites. This carbon material can be readily utilized in/as base materials for catalysts, adsorbent, water treatment materials, electrodes for double layer capacitors, fuel gas storage materials and fuel cell gas diffusion electrodes. The carbon is produced by oxidation of poly(phenylene ether) (PPE) in air or other oxygen containing atmospheres at temperatures near the glass transition temperature of PPE, followed by carbonization of the oxidized material in an inert atmosphere at elevated temperatures (400-3000null C.) and activating the carbon materials with steam, carbon dioxide, oxygen containing gases, organic or inorganic bases and organic or inorganic acids. The carbon is characterized by high electric conductivity and high surface area with controllable pore size distribution. The method also involves modification of the original polymer with an oxidization process, forming the preform by casting, molding or extruding a mixture of polymer and other carbon materials, carbonizing the preform at elevated temperatures and activating such materials as aforementioned. |
210 |
Inorganic/organic composite foam and process for producing the same |
US09462043 |
1999-12-30 |
US06610756B1 |
2003-08-26 |
Tomokazu Shimizu; Tadaaki Yamazaki; Shinzo Kaida; Tsuyoshi Tomosada |
An inorganic/organic composite foam that has a foam structure obtained from a combination of a phosphoric acid compound and/or a sulfuric acid compound with a blowing agent therefor, has reduced brittleness due to a cured material of an urethane prepolymer having NCO groups, and contains a powdery boric acid compound, and a process for producing the same. The foam is not only reduced in brittleness but also improved in foam strength after combustion due to the incorporation of the powdery boric acid compound while retaining inherent foam properties and inherent low quantities of heat of combustion and smoking in combustion. It is used in exterior wall panels, heat insulating materials, sound insulating materials, fireproof covering materials, lightweight aggregates, filling materials for cavities, and the like, which are required to have fire-proofing performance. |
211 |
Mesoporous materials and methods |
US10301013 |
2002-11-21 |
US20030157248A1 |
2003-08-21 |
James
J.
Watkins; Rajaram
Pai |
Mesoporous articles and methods for making mesoporous articles are disclosed. |
212 |
Compression-molded silicon carbide structures |
US09991401 |
2001-11-20 |
US20030094716A1 |
2003-05-22 |
Kishor
P.
Gadkaree; Joseph
F.
Mach |
A process for forming a silicon carbide structure includes molding by compression a mixture of a silicon precursor powder and a cross-linking thermoset resin to form a rigid structure, carbonizing the rigid structure, and forming a silicon carbide structure by heating the carbonized rigid structure at a temperature sufficient to allow carbon and silicon in the structure to react to form silicon carbide. |
213 |
Method of making silicon nitride-silicon carbide composite filters |
US10188597 |
2002-07-02 |
US06555032B2 |
2003-04-29 |
Kishor P. Gadkaree |
A process for forming a porous silicon nitride-silicon carbide body, the process comprising (a) forming a plasticizable batch mixture comprising (1) powdered silicon metal; (2) a silicon-containing source selected from the group consisting of silicon carbide, silicon nitride and mixtures thereof; (3) a water soluble crosslinking thermoset resin having a viscosity of about 50-300 centipoise; and, (4) a water soluble thermoplastic temporary binder; (b) shaping the plasticizable batch mixture to form a green body; (c) drying the green body; (d) firing the green body in nitrogen at a temperature of 1400° C. to 1600° C. for a time sufficient to obtain a silicon nitride-silicon carbide structure. |
214 |
Carbon foam abrasives |
US09976425 |
2001-10-12 |
US20030070364A1 |
2003-04-17 |
Darren
Kenneth
Rogers; Janusz
Wladyslaw
Plucinski |
The incorporation or blending of from about 1 to about 10% by volume of a nullcarbide precursornull powder, preferably on the order of <100 microns in size, with a coal particulate starting material and the subsequent production of carbon foam in accordance with the method described herein, results in a carbon foam that exhibits significantly enhanced abrasive characteristics typical of those required in the polishing of, for example glass, in the manufacture of cathode ray tubes. |
215 |
Methods of making a carbon foam |
US09654211 |
2000-09-01 |
US06544491B1 |
2003-04-08 |
Alfred H. Stiller; Janusz Plucinski; Aaron Yocum |
A method of making anisotropic carbon foam material includes de-ashing and hydrogenating bituminous coal, separating asphaltenes from oils contained in the coke precursor, coking the material to create a carbon foam. In one embodiment of the invention, the carbon foam is subsequently graphitized. The pores within the foam material are preferably generally of equal size. The pore size and carbon foam material density may be controlled by (a) altering the percentage volatiles contained within the asphaltenes to be coked, (b) mixing the asphaltenes with different coking precursors which are isotropic in nature, or (c) modifying the pressure under which coking is effected. In another embodiment of the invention, solvent separation is employed on raw bituminous coal and an isotropic carbon foam is provided. The carbon foam materials of the present invention are characterized by having high compressive strength as compared with prior known carbon foam materials. A further embodiment is disclosed wherein the pitch material which is employed as a feedstock in the process may be coal feedstock or a petroleum feedstock employed alone or in combination with each other. In another embodiment, an inert gas is saturated into the asphaltenes under a first pressure and coking is subsequently effected at a second pressure lower than the first to facilitate coking. |
216 |
Method of making silicon nitride-bonded silicon carbide honeycomb filters |
US10210308 |
2002-08-01 |
US20030057581A1 |
2003-03-27 |
Yanxia
Lu; Dale
R.
Wexell; Elizabeth
M.
Wheeler |
A process for forming a silicon nitride-bonded silicon carbide honeycomb monolith by a) forming a plasticizable mixture which includes (1) about 60% to 85% by weight, powdered silicon carbide with a median particle size of about 10-40 micrometers; (2) about 15% to 40% by weight, powdered silicon metal with a median particle size of about 5-20 micrometers; and, (3) organic components; b) extruding the plasticizable mixture to form a green honeycomb monolith; c) drying the green honeycomb monolith; and, d) heating the honeycomb monolith to 1450null C. with a hold of 1 hour in an atmosphere of argon; and, e) nitriding the honeycomb monolith between 1450null C. to 1600null C. for a time sufficient to obtain a silicon nitride-bonded silicon carbide body. |
217 |
Method of making silicon nitride-silicon carbide composite filters |
US10188597 |
2002-07-02 |
US20030047829A1 |
2003-03-13 |
Kishor
P.
Gadkaree |
A process for forming a porous silicon nitride-silicon carbide body, the process comprising (a) forming a plasticizable batch mixture comprising (1) powdered silicon metal; (2) a silicon-containing source selected from the group consisting of silicon carbide, silicon nitride and mixtures thereof; (3) a water soluble crosslinking thermoset resin having a viscosity of about 50-300 centipoise; and, (4) a water soluble thermoplastic temporary binder; (b) shaping the plasticizable batch mixture to form a green body; (c) drying the green body; (d) firing the green body in nitrogen at a temperature of 1400null C. to 1600null C. for a time sufficient to obtain a silicon nitride-silicon carbide structure. |
218 |
Three dimensionally periodic structural assemblies in nanometer and longer scales |
US09617435 |
2000-07-14 |
US06517763B1 |
2003-02-11 |
Anvar Zakhidov; Ray Baughman; Changxing Cui; Ilyas I. Khayrullin; Lo-Min Liu; Igor Udod; Ji Su; Mikhail Kozlov |
This invention relates to processes for the assembly of three-dimensional structures having periodicities on the scale of optical wavelengths, and at both smaller and larger dimensions, as well as compositions and applications therefore. Invention embodiments involve the self assembly of three-dimensionally periodic arrays of spherical particles, the processing of these arrays so that both infiltration and extraction processes can occur, one or more infiltration steps for these periodic arrays, and, in some instances, extraction steps. The product articles are three-dimensionally periodic on a scale where conventional processing methods cannot be used. Articles and materials made by these processes are useful as thermoelectrics and thermionics, electrochromic display elements, low dielectric constant electronic substrate materials, electron emitters (particularly for displays), piezoelectric sensors and actuators, electrostrictive actuators, piezochromic rubbers, gas storage materials, chromatographic separation materials, catalyst support materials, photonic bandgap materials for optical circuitry, and opalescent colorants for the ultraviolet, visible, and infrared regions. |
219 |
Gas diffusion electrode and its production |
US09575058 |
2000-05-19 |
US06503655B1 |
2003-01-07 |
Raino Petricevic; Jochen Fricke; Rainer Leuschner; Matthias Lipinski |
A thin, flat, and porous carbon gas diffusion electrode having a side in contact with a supply of gas and a side in contact with an electrolyte, comprises a pyrolysis product of a composite of an organic aerogel or xerogel and a reinforcing skeleton consisting at least in part of organic material. The porosity of the carbon gas diffusion electrode according to the invention can be regulated at will while the surface of the electrode is smooth. |
220 |
Carbon foams and methods of making the same |
US09805264 |
2001-03-13 |
US06500401B2 |
2002-12-31 |
Steven R. Reznek; Robert K. Massey |
A method of making carbon foam is described which involves pyrolizing a mixture containing at least one pyrolizable substance and at least one unpyrolizable material and then removing the unpyrolizable material to obtain the carbon foam. Carbon foam made by this process is also described. Incorporating the carbon foam in a variety of end use applications including electrodes, thermal insulation material, polymers, and the like is also described. |