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US20130149549 METALLIC STRUCTURES BY METALLOTHERMAL REDUCTION  
Compositions made by metallothermal reduction from aerogels and phase separated glasses and glass ceramics formed and methods of producing such compositions are provided. The compositions have...
US20110236292 Clean bench and method of producing raw material for single crystal silicon  
A clean bench comprising a worktable on which polycrystalline silicon is placed, a box part which includes side plates to surround three sides except a front face of a working space above the...
US20110182796 METHOD FOR THE PYROLYSIS OF CARBOHYDRATES  
The present invention relates to methods for the technical pyrolysis of a carbohydrate or carbohydrate mixture at an elevated temperature while adding silicon oxide, to a pyrolysis product...
US20140235884 METHOD OF PREPARING SILICON NANOCRYSTALS  
The present application includes a method of preparing silicon nanocrystals (Si-NCs) comprising combining silica particles with magnesium and heating said combination under conditions to form...
US20150104370 METHOD FOR PRODUCING SILICON METAL AND POROUS CARBON  
The method for producing silicon metal and porous carbon from rice hulls is provided. The method comprises a first step S1 of producing a rice hull charcoal M2 containing SiO2 and C by heat...
US20150224468 METHOD OF SYNTHESIZING SILICA NANOFIBERS USING SOUND WAVES  
A method for synthesizing silica nanofibers using sound waves is provided. The method includes providing a solution of polyvinyl pyrrolidone, adding sodium citrate and ammonium hydroxide to form a...
US20090208401 PROCESS FOR PRODUCING BORON ADDED PURIFIED SILICON  
Provided is a process for producing a boron added silicon (purified silicon) in an energy saving mode from a reduced silicon obtained by reducing a silicon halide with a metal aluminium. The...
US20090274608 CALCIUM-SILICATE BASED SLAG FOR TREATMENT OF MOLTEN SILICON  
A method for making solar grade silicon from metallurgical grade silicon is disclosed, which including, treating a calcium-silicate based slag by molten calcium-silicate based slag in a first...
US20110217225 Method and Apparatus for Refining Metallurgical Grade Silicon to Produce Solar Grade Silicon  
A method and apparatus for refining metallurgical silicon to produce solar grade silicon for use in photovoltaic cells. A crucible in a vacuum furnace receives a mixture of metallurgical silicon...
US20130319391 RECOVERY OF SILICON VALUE FROM KERF SILICON WASTE  
The present invention is for the recovery of maximum silicon value of kerf silicon waste, produced during the manufacture of silicon wafers by wire saw, diamond saw and chemical mechanical...
US20140072498 Manufacturing and Applications of Silicon Metal  
A method of manufacture is described that uses liquid phase reduction of silicon hydride, to produce silicon metal. Working in liquid phase permits a more compact plant design and offers...
US20110176986 METHOD AND A REACTOR FOR PRODUCTION OF HIGH-PURITY SILICON  
The present invention relates to a method and equipment for production of high purity silicon by reduction of SiCl4 with molten Zn metal. The method is characterized in that the reduction takes...
US20120230905 PROCESS FOR PYROLYSIS OF CARBOHYDRATES  
The present invention relates to processes for industrial pyrolysis of a carbohydrate or carbohydrate mixture with addition of amorphous carbon, to a pyrolysis product thus obtainable and to the...
US20140377653 POROUS SILICON BASED NEGATIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR MANUFACTURING THE SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME  
The present invention relates to a method of preparing a porous silicon-based negative electrode active material comprising: mixing a porous silica (SiO2) and an aluminum powder; oxidizing all or...
US20120037041 METHOD FOR PRODUCING METAL NANOPARTICLES AND NANOPARTICLES OBTAINED IN THIS WAY AND USE THEREOF  
The invention relates to a method for producing metal nanoparticles, wherein metal ions are reduced by means of at least one reducing agent in the presence of at least one polymer stabilizer and...
US20090081108 Clean bench and method of producing raw material for single crystal silicon  
A clean bench comprising a worktable on which polycrystalline silicon is placed, a box part which includes side plates to surround three sides except a front face of a working space above the...
US20120244059 METHOD FOR MANUFACTURING SILICON TETRACHLORIDE AND METHOD FOR MANUFACTURING SILICON FOR USE IN A SOLAR CELL  
In one aspect of a method for producing silicon tetrachloride comprises a step in which a silicon-containing substance that contains zeolite or preferably spent zeolite, is used for chlorination...
US20110280786 SILICON MANUFACTURING METHOD  
A method for producing silicon, the method comprising a heating step of heating a metal powder Mp1 made of at least one member selected from the group consisting of Mg, Ca and Al in a plasma P;...
US20140328741 Silicon Photonic Fiber and Method of Manufacture  
Methods of converting silica to silicon and fabricating silicon photonic crystal fiber (PCF) are disclosed. Silicon photonic crystal fibers made by the fabrication methods are also disclosed. One...
US20110176984 METHOD FOR MAKING SILICON FOR SOLAR CELLS AND OTHER APPLICATIONS  
A method for preparation of high purity silicon suitable for photovoltaic cells using reduction of silica, which is pre-purified in an aqueous solution, in presence of a reducing agent, preferably...
US20080025901 Cylindrical Container Made of Carbon and Method for Producing Silicon  
A cylindrical vessel made of carbon is used in the production of silicon. The inner surface of the vessel comes into contact with a silicon melt, wherein the permeation with silicon melt is...
US20110206592 LOW COST ROUTES TO HIGH PURITY SILICON AND DERIVATIVES THEREOF  
The present invention is directed to a method for providing an agricultural waste product having amorphous silica, carbon, and impurities; extracting from the agricultural waste product an amount...
US20090130015 Method for producing high purity silicon  
The present invention provides a method for producing high purity silicon. The method for producing high purity silicon comprises a step of reducing halogenated silicon represented by the...
US20110158885 HIGH PURITY CRYSTALLINE SILICON, HIGH PURITY SILICON TETRACHLORIDE AND PROCESSES FOR PRODUCING THE SAME  
An object of the present invention is to provide more inexpensive high purity crystalline silicon which can satisfy not only a quality required to a raw material of silicon for a solar cell but...
US20120045383 Method for the Manufacture of Photovoltaic Grade Silicon Metal  
Disclosed is method for the production of silicon metal of a purity sufficient for the manufacture of commercial grade photovoltaic devices, by first reacting liquid silicon tetrachloride with...
US20110268643 Production of Silicon  
A process is provided for the production of elemental silicon from a silica containing glass melt including contacting the glass with a metal capable of undergoing a bimolecular reaction between...
US20130099159 PRODUCTION OF METAL OR METALLOID NANOPARTICLES  
One embodiment may include a method of making nanoparticles comprising elemental metals or metalloids and/or alloys thereof. The method may include reducing a metal halide or a metalloid halide...
US20090098039 Silicon Production Method  
There is provided a silicon production method which comprises producing semiconductor grade silicon while producing solar grade silicon by converting a portion of trichlorosilane into silicon for...
US20080233037 APPARATUS AND METHOD FOR MANUFACTURING HIGH PURITY POLYCRYSTALLINE SILICON  
An apparatus for manufacturing a high purity polycrystalline silicon is characterized by comprising: a vaporizer 8 of silicon chloride; a fusing evaporator 5 of zinc; a vertical reactor 1 provided...
US20090263307 Silicon Production Process  
An improved process for producing high purity silicon results from the reaction of sodium with pure silicon tetrafluoride gas, which produces sodium fluoride as a by-product. The silicon...
US20120230904 PRODUCTION OF HIGH PURITY SILICON FROM AMORPHOUS SILICA  
A process to the production of silicon from amorphous silica is disclosed. The amorphous silica is formed from a material rich in silica, especially rice husk ash or silica fume. The process...
US20110052475 Production of High Purity Silicon from Amorphous Silica  
A process to the production of silicon from amorphous silica is disclosed. The amorphous silica is formed from a material rich in silica, especially rice husk ash or silica fume. The process...
US20080292525 Method and Reactor for Continuous Production of Semiconductor Grade Silicon  
This invention relates to a method and reactor for continuous production of semiconductor grade silicon by decomposition of a silicon containing gas of ultra-high purity to particulate silicon and...
US20150017569 MESOPOROUS SILICON SYNTHESIS AND APPLICATIONS IN LI-ION BATTERIES AND SOLAR HYDROGEN FUEL CELLS  
We provide a mesoporous silicon material (PSi) prepared via a template-free and HF-free process. The production process is facile and scalable, and it may be conducted under mild reaction...
US20130189575 POROUS SILICON BASED ANODE MATERIAL FORMED USING METAL REDUCTION  
A porous silicon based material comprising porous crystalline elemental silicon formed by reducing silicon dioxide with a reducing metal in a heating process followed by acid etching is used to...
US20090092535 METHOD FOR PROCESSING SILICON POWDER TO OBTAIN SILICON CRYSTALS  
Embodiments of the present invention relate to a process for obtaining silicon crystals from silicon. The method includes contacting silicon powder with a solvent metal to provide a mixture...
US20150110702 PRODUCTION OF POLYCRYSTALLINE SILICON IN SUBSTANTIALLY CLOSED-LOOP PROCESSES THAT INVOLVE DISPROPORTIONATION OPERTIONS  
Production of polycrystalline silicon in substantially closed-loop processes and systems is disclosed. The processes and systems generally involve disproportionation of trichlorosilane to produce...
US20110262336 PRODUCTION OF SOLAR-GRADE SILICON FROM SILICON DIOXIDE  
The invention relates to a complete method for producing pure silicon that is suitable for use as solar-grade silicon, comprising the reduction of a silicon oxide, purified by acidic precipitation...
US20140271437 METHOD OF CONTROLLING A GAS DECOMPOSITION REACTOR BY RAMAN SPECTROMETRY  
A method for determining the efficiency of a chemical conversion within a gas decomposition reactor having an inlet and an exhaust outlet is disclosed. The method includes measuring a chemical...
US20120100061 Production of Polycrystalline Silicon in Substantially Closed-loop Processes  
Production of polycrystalline silicon in a substantially closed-loop process is disclosed. The processes generally include decomposition of trichlorosilane produced from metallurgical grade silicon.
US20140105806 PROCESS FOR DEPOSITION OF POLYCRYSTALLINE SILICON  
The invention relates to a process for deposition of polycrystalline silicon, including introduction of a reaction gas containing a silicon-containing component and hydrogen into a reactor, as a...
US20100008841 Method for the Manufacture of Silicon Tetrachloride  
The invention concerns a method for the manufacture of silicon tetrachloride by conversion of a mixture of finely divided and/or amorphous silicon dioxide, carbon and an energy donator with...
US20090324479 FLUIDIZED BED REACTOR SYSTEMS AND METHODS FOR REDUCING THE DEPOSITION OF SILICON ON REACTOR WALLS  
Gas distribution units of fluidized bed reactors are configured to direct thermally decomposable compounds to the center portion of the reactor and away from the reactor wall to prevent deposition...
US20120063985 SILICON MANUFACTURING APPARATUS AND SILICON MANUFACTURING METHOD  
In a silicon manufacturing apparatus and its related manufacturing method, a zinc gas supply opening (18b, 180b, 181b, 182b, 183b, 184b, 185b, 280a) is placed above a silicon tetrachloride gas...
US20110262339 PRODUCTION OF SOLAR-GRADE SILICON FROM SILICON DIOXIDE  
The invention relates to a complete method for producing pure silicon that is suitable for use as solar-grade silicon, comprising the reduction of a purified silicon oxide using one or more pure...
US20140102356 Deposition of High Purity Silicon Via High Surface Area Gas-Solid or Gas-Liquid Interfaces and Recovery Via Liquid Phase  
Solid silicon is deposited onto electrically heated deposition plates by the reduction reaction of gaseous trichlorosilane and hydrogen which are mixed and pumped across the surfaces of the...
US20110256047 CASCADING PURIFICATION  
The present invention provides a method of purifying a material using a cascading dissolution and washing process. The dissolution and washing processes can contain single or multiple stages....
US20140079930 Mesoporous Silicon  
A method of making mesoporous silicon from silica, the mesoporous silicon obtained by the method, and uses of the mesoporous silicon are described. The mesoporous silicon may be derived from...
US20140308585 SILICON-BASED ACTIVE MATERIALS FOR LITHIUM ION BATTERIES AND SYNTHESIS WITH SOLUTION PROCESSING  
Silicon based anode active materials are described for use in lithium ion batteries. The silicon based materials are generally composites of nanoscale elemental silicon with stabilizing components...
US20050053540 Method for producing amorphous silicon and/or organohalosilanes produced therefrom  
Highly pure and reactive amorphous silicon metal particles are prepared in an organic solvent by reducing a halosilane, organohalosilane, or salt thereof with a metal reducing agent. When the...

Matches 1 - 50 out of 87 1 2 >