Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Norman D. Hinman0
Charles E. Wyman0
Date of Patent
September 15, 2009
0Patent Application Number
108229240
Date Filed
April 13, 2004
0Patent Primary Examiner
Patent abstract
A method for producing carbon-silica products from silica-containing plant matter such as rice hulls or straw by leaching with sulfuric acid to remove non-silica minerals and metal while adjusting the mole ratio of fixed carbon to silica in the resultant product. The carbon and silica are intimately mixed on a micron or submicron scale and are characterized by high purity and reactivity, small particle size, high porosity, and contain volatile carbon that can be used as a source of energy for the production of silicon-containing products from the carbon-silica products. High purity silicon-containing products made from the carbon-silica products of the invention are also disclosed.
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