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7622059 |
Method for synthesis of carbon nanotubes
The invention relates to a method for synthesis of carbon nanotubes of the highest carbon purity by the process of vapour phase chemical deposition. The nanotubes produced can be used to advantage...
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7611687 |
Welding of carbon single-walled nanotubes by microwave treatment
Methods and processes for preparing interconnected carbon single-walled nanotubes (SWNTs) are disclosed. The SWNTs soot, synthesized by any one of the art methods, is heated to less than about...
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7604790 |
Method of removing carbonaceous impurities in carbon nanotubes
A method of selectively removing carbonaceous impurities from carbon nanotubes (CNTs). In an example method, impurities formed on the surface of the CNTs may be removed by a sulfidation reaction...
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7585482 |
Method and apparatus for producing carbon nanotubes
A method of purifying a single-walled carbon nanotube catalytic product having the steps of providing a catalytic product including single-walled carbon nanotubes, and a Group VIII and/or Group VIb...
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7581645 |
Method for manufacturing carbon nanotubes with desired length
A method for manufacturing carbon nanotubes with a desired length includes the steps of: providing an array of carbon nanotubes; placing a mask having at least an opening defined therein on the...
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7578941 |
Length-based liquid-liquid extraction of carbon nanotubes using a phase transfer catalyst
The present invention is generally directed to new liquid-liquid extraction methods for the length-based separation of carbon nanotubes (CNTs) and other 1-dimensional nanostructures. In some...
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7572426 |
Selective functionalization of carbon nanotubes
The present invention is directed toward methods of selectively functionalizing carbon nanotubes of a specific type or range of types, based on their electronic properties, using diazonium...
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7566434 |
Spheroidal aggregates comprising single-wall carbon nanotubes and method for making the same
A method for separating single-wall carbon nanotubes from an aqueous slurry comprises adding a water-immiscible organic solvent to an aqueous slurry comprising single-wall carbon nanotubes,...
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7556746 |
Method of making an applicator liquid for electronics fabrication process
Certain spin-coatable liquids and application techniques are described, which can be used to form nanotube films or fabrics of controlled properties. A method of making an applicator liquid...
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7537682 |
Methods for purifying carbon materials
Methods of purifying samples are provided that are capable of removing carbonaceous and noncarbonaceous impurities from a sample containing a carbon material having a selected structure....
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7514063 |
Method for the purification of semiconducting single walled carbon nanotubes
A method of obtaining purified semiconducting SWCNTs from a bulk mixture of metallic SWCNTs and semiconducting SWCNTs by first creating an aqueous solution containing the bulk mixture and adding a...
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7504051 |
Applicator liquid for use in electronic manufacturing processes
Certain spin-coatable liquids and application techniques are described, which can be used to form nanotube films or fabrics of controlled properties. A spin-coatable liquid containing nanotubes for...
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7494639 |
Purification of carbon nanotubes based on the chemistry of fenton's reagent
The present invention is directed to methods of purifying carbon nanotubes (CNTs). In general, such methods comprise the following steps: (a) preparing an aqueous slurry of impure CNT material; (b)...
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7488876 |
Method for selectively separating semiconductive carbon nanotubes
Semiconducting type carbon nanotubes are efficiently separated from a mixture of semiconducting and metallic carbon nanotubes in a simple manner, by way of treating the carbon nanotube mixture with...
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7488875 |
Process for purifying carbon nanotubes made on refractory oxide supports
A carbon nanotube material that comprises carbon nanotubes, a magnesia support and a catalyst metal can be purified by contacting it with a mixture comprising carbon dioxide and water. At least...
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7488699 |
Hollow mesoporous carbon electrode-catalyst for direct methanol fuel cell and preparation thereof
The present invention discloses a novel electrode-catalyst for direct methanol fuel cell prepared by introducing a carbon precursor into pores of a wormhole-like molecular sieve template,...
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7481990 |
Methods for osmylating and ruthenylating single-walled carbon nanotubes
The present invention provides a method of differentiating metallic carbon nanotubes from semiconducting carbon nanotubes. The method comprising providing a nanotube dispersion, wherein the...
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7476374 |
Catalytic destruction of halogenated hydrocarbons
The destruction of chlorinated hydrocarbons, such as carbon tetrachloride, over lanthanide-based solid catalysts in the presence of steam has been investigated between 200 and 350° C. Ln 2 O 3 /AL...
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7459121 |
Method for continuous fabrication of carbon nanotube networks or membrane materials
Methods and devices are provided for the continuous production of a network of nanotubes or other nanoscale fibers. The method includes making a suspension of nanoscale fibers dispersed in a liquid...
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7374685 |
Process for separating metallic from semiconducting single-walled carbon nanotubes
A method for separating semiconducting single-walled carbon nanotubes from metallic single-walled carbon nanotubes is disclosed. The method utilizes separation agents that preferentially associate...
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7357906 |
Method for fractionating single-wall carbon nanotubes
The invention relates generally to dispersing and fractionating single-wall carbon nanotubes, which can be derivatized to facilitate fractionation, for example, by adding solubilizing moieties to...
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7354563 |
Method for purification of as-produced fullerene nanotubes
This invention relates generally to a fullerene nanotube purification process and more particularly to a purification process that comprises heating the fullerene nanotube-containing felt under...
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7347982 |
Apparatus and method for recovering carbon black from pyrolysis byproducts
A system ( 10 ), process and apparatus are disclosed for purifying carbon black ( 15 ) containing sulfur and metal oxide impurities by digesting ( 20 ) the impure carbon black in an acid to extract...
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7347981 |
Directed flow method and system for bulk separation of single-walled tubular fullerenes based on helicity
A method for bulk separation of single-walled tubular fullerenes ( 100 ) based on helicity is provided wherein a solution or suspension of the single-walled tubular fullerenes ( 100 ) is flowed...
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7294314 |
Heat exchangers with novel ball joints and assemblies and processes using such heat exchangers
What is disclosed herein deals with low to medium pressure, high temperature, all ceramic, air-to-air, indirect heat exchangers, novel ball joints, high load-bearing ceramic tube sheets, and tube...
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7220697 |
Mesoporous carbon molecular sieve and supported catalyst employing the same
The present invention is related to a mesoporous carbon molecular sieve, which can be used as a catalyst carrier capable of improving the activity of a supported catalyst and a method of preparing...
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7208132 |
Purification of endohedral and other fullerenes by chemical methods
The invention provides a method of separating a first and a second set of fullerenes in a fullerene mixture. In the method of the invention, a stable fullerene cation is formed of one of the first...
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7166266 |
Isolation and purification of single walled carbon nanotube structures
Disclosed are methods for isolating and purifying single wall carbon nanotubes from contaminant matrix material, methods for forming arrays of substantially aligned nanotubes, and products and...
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7153398 |
Method for producing fullerene-containing carbon and device for carrying out said method
The inventive method for producing fullerene-containing carbon and the device for carrying out said method relate to the chemical industry and are used for producing fullerenes. Said method for...
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7150865 |
Method for selective enrichment of carbon nanotubes
A method for treating carbon nanotubes with microwave energy to selective remove metallic-type carbon nanotubes is provided. A sample containing carbon nanotubes is positioned in a microwave cavity...
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7135160 |
Spheroidal aggregates comprising single-wall carbon nanotubes and method for making the same
A method for separating single-wall carbon nanotubes from an aqueous slurry comprises adding a water-immiscible organic solvent to an aqueous slurry comprising single-wall carbon nanotubes,...
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7090819 |
Gas-phase process for purifying single-wall carbon nanotubes and compositions thereof
The present invention relates to an all gas-phase process for the purification of single-wall carbon nanotubes and the purified single-wall carbon nanotube material. Known methods of single-wall...
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7052666 |
Method for cutting single-wall carbon nanotubes
This invention relates generally to cutting single-wall carbon nanotubes (SWNT). In one embodiment, the present invention provides for preparations of homogemeous populations of short carbon...
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7037479 |
Method for cleaning nanomorphic carbon species
An exemplary method for substantially non-chemically-reactive separation of nanomorphic carbon species ( 140 ) comprises inter alia the steps of suspending a nanomorphic carbon sample ( 100 ) in an...
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7029645 |
Method for non-reactive separation of nanomorphic carbon species
An exemplary method for substantially non-chemically-reactive separation of nanomorphic carbon species ( 150 ) comprises inter alia the steps of dissolving a crude nanomorphic carbon sample ( 100 )...
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6936233 |
Method for purification of as-produced single-wall carbon nanotubes
This invention relates generally to a single-wall carbon nanotube (SWNT) purification process and more particularly to a purification process that comprises heating the SWNT-containing felt under...
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6923915 |
Process for the removal of impurities from combustion fullerenes
The invention generally relates to purification of carbon nanomaterials, particularly fullerenes, by removal of PAHs and other hydrocarbon impurities. The inventive process involves extracting a...
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6881680 |
Low nitrogen concentration carbonaceous material and manufacturing method thereof
The present invention relates to a low nitrogen concentration carbonaceous material with a nitrogen concentration according to glow discharge mass spectrometry of 100 ppm or less, as well as a...
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6878361 |
Production of stable aqueous dispersions of carbon nanotubes
Methods of producing stable dispersions of single-walled carbon nanotube structures in solutions are achieved utilizing dispersal agents. The dispersal agents are effective in substantially...
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6869583 |
Purification of carbon filaments and their use in storing hydrogen
Carbon structures, e.g. carbon nano-fibers, suitable for absorbing hydrogen at low pressures and low temperatures are produced by a selective oxidation and/or acid reflux process. The process...
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6669918 |
Method for bulk separation of single-walled tubular fullerenes based on chirality
A method for bulk separation of single-walled tubular fullerenes ( 100 ) based on chirality is provided wherein a first step is the formation of a template ( 40 ) on a crystalline substrate ( 30 )....
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6576341 |
Composition
This invention relates to a process for purification of nanotube soot in a non-destructive and efficient method using a polymer having a coiling structure to extract nanotubes from their...
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6422450 |
Nanotube-based high energy material and method
A carbon-based material containing an allotrope of carbon, such as single-walled carbon nanotubes, is capable of accepting and intercalated alkali metal. The material exhibits a reversible capacity...
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6331262 |
Method of solubilizing shortened single-walled carbon nanotubes in organic solutions
Naked single-walled nanotube carbon metals and semiconductors were dissolved in organic solutions by derivatization with SOCl 2 and octadecylamine charge. Both ionic (charge transfer) and covalent...
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6254771 |
Method of processing desulfurization absorption liquid and apparatus therefor
This invention relates to a method for the treatment of a desulfurization absorbing fluid after gas-liquid contact with combustion exhaust gas in which fine particles of unburned carbon and other...
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6238443 |
Process of agglomerating high carbon dusts and a substantially non-dusting high carbon composition therefrom
The invention is directed to a process for agglomerating high-carbon dust, such as kish. The process comprises the steps of providing a supply of the high-carbon dust, applying a suifactant and...
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6217836 |
Recovering carbon, silica and alumina from spent potliner
Spent potliner from aluminum reduction cells is treated, for example, with sulfuric acid to recover carbon, silica and alumina or to recover a vitrified product of silca and alumina.
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6156281 |
Process for removal of hazardous air pollutants from coal
An improved process for removing mercury and other trace elements from coal containing pyrite by forming a slurry of finely divided coal in a liquid solvent capable of forming ions or radicals...
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6139990 |
Modified graphite particles derived from scaly natural ones, production thereof and secondary battery
There are provided modified and rounded graphite particles derived from scaly natural graphite particles by modification so as to bring their form close to a spherical form and satisfying all the...
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6121179 |
Supercritical treatment of adsorbent materials
Contaminated adsorbent particles, preferably activated carbon particles, are regenerated in water at supercritical conditions. The particles are preferably mixed in water prior to treatment. The...
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