IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0666663
(2003-09-18)
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발명자
/ 주소 |
- Struthers, Ralph C.
- Chang, David B.
- Toossi, Reza
- Ahdout, Sion
- Li, Lijuan
- Palomba, Robert G.
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출원인 / 주소 |
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대리인 / 주소 |
MacPherson Kwok Chen &
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인용정보 |
피인용 횟수 :
13 인용 특허 :
11 |
초록
A system and method for sorption and desorption of molecular gas contained by storage sites of graphite nano-filaments randomly disposed in three-dimensional reticulated aerogel.
대표청구항
▼
1. A method for forming a nanostructure laded reticulate structure for sorption and desorption of molecular gas, comprising:polymerizing one or more precursor mixtures to form an aerogel; supercritically drying said aerogel to remove the liquid components and form a monolith aerogel; curing said mon
1. A method for forming a nanostructure laded reticulate structure for sorption and desorption of molecular gas, comprising:polymerizing one or more precursor mixtures to form an aerogel; supercritically drying said aerogel to remove the liquid components and form a monolith aerogel; curing said monolith aerogel disposed and sealed into a mold; carbonizing said monolith aerogel by placing said monolith aerogel in a reducing atmosphere at elevated temperatures; depositing a catalyst on the carbonized aerogel which bonds to sites available on the aerogel to form catalyst islands; growing crystalline graphite precursors from said catalyst islands. 2. The method of claim 1, wherein said crystalline graphite precursors comprise platelet carbon nano-fibers, cylindrical carbon nanostructures, ribbon carbon nano-fibers, faceted tubular carbon nano-fibers and herringbone carbon nano-fibers.3. The method of claim 1 further comprising introducing a hydrogen gas molecule into a pressure vessel which includes the nanostructure laded reticulate structure at the suitable temperatures and pressures for sorption of the hydrogen gas molecule.4. A method for forming a nanostructure laded reticulate structure for sorption and desorption of molecular gas, comprising:combining the sol-gel polymerization of one or more precursor mixtures of organic aerogel precursors, solvent precursors, sol-gel catalyst precursors, metal cation salts and organic acid metal salts/polymer sol-gel of acetates, benzoates, carbonates, chlorides, epoxides, formates, hydroxides, isopropoxides, nitrates and/or oxalates of metal precursors; casting said sol-gel mixtures into a retort; curing said sol-gel mixtures; supercritical drying extraction of liquid from the cured sol-gel mixtures; reducing and carbonizing said cured sol-gel mixtures in a reducing atmosphere of hydrogen to produce a catalyzed carbon aerogel monolith structure; and growing graphite nano-filaments on said reticulated catalyzed carbon aerogel monolith structures. 5. The method of claim 4, wherein said growing graphite nano-filaments on said reticulated catalyzed carbon aerogel monolith structure comprises:decomposing an effective amount carbon-containing gas mixed precursors on the catalyzed carbon aerogel structure at elevated temperatures. 6. The method of claim 5, wherein said carbon-containing gas mixed precursors comprises at least one of acetylene, benzene, carbon dioxide, carbon monoxide, hydrogen and methane.7. The method of claim 5, wherein said graphite nano-filaments comprises platelet nanostructure, cylindrical nanostructure, ribbon nanostructure, faceted tubular nanostructure and herringbone nanostructure.8. The method of claim 4, wherein said organic aerogel precursors comprise one of resorcinol-formaldehyde (RF), phenolic-furfural (PF), melamine-formaldehyde, and phenolic-novolak resins.9. The method of claim 4, wherein said solvent precursors comprise at least one of acetic acid, acetone, butane, butyric acid, ethanol, ethyl ether, formic acid, hexane, isopentane, isopropanol, methanol, n-propanol, pentanoic acid, pentane, 1-propanol and propionic acid.10. The method of claim 4, wherein said sol-gel catalyst precursors comprise at least one of sodium carbonate, hydrochloric acid, toluenesulfonic acid, and phosphoric acid.11. The method of claim 4, wherein said oxalates of metal precursors comprise at least one of chromium, cobalt, copper, iron, nickel and alloys of said metals.
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