Method of making amorphous silicon powder
US8178067B2 · kind B2 · utility
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2References
2Claims
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Key dates
| Filing date | Aug 29, 2006 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Jan 23, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A production method of amorphous silicon oxide powder comprises a step of preparing a wood, agricultural crop or plant containing hexose and/or pentose and silicon oxide as a starting raw material, a step of hydrolyzing the starting raw material with nitric acid, hydrochloric acid, sulfuric acid, phosphoric acid or organic acid to reduce a content of the hexose to 10% by weight or less and/or a content of the pentose to 20% by weight or less, and a step of burning residue yielded in the hydrolyzing step at a temperature of 400° C. to 1200° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.