Process for producing high surface area activated carbon
US5102855A · kind A · utility
42Cited by
8References
10Claims
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Key dates
| Filing date | Jul 20, 1990 |
| Grant date | Apr 7, 1992 |
| Priority date | — |
| Expiry date | Jul 20, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/32
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Process for producing activated carbon, preferably high surface area activated carbon, from inexpensive cellulosic precursors, such as paper, by pretreating the cellulosic precursor with an activating agent, such as phosphoric acid, followed by carbonization in an inert atmosphere at an elevated temperature to produce activated carbon. The activated carbon can be further activated to increase its surface area by heating it in an oxidizing atmosphere at an elevated temperature to yield activated carbon having a surface area of at least 100 m.sup.2 /g.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.