Carbonaceous adsorbents from pyrolyzed polysulfonated polymers
US5094754A · kind A · utility
18Cited by
7References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 15, 1991 |
| Grant date | Mar 10, 1992 |
| Priority date | — |
| Expiry date | Jul 15, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J20/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Carbonaceous adsorbent particles having multimodal pore size, including micropores and macropores, with improved adsorptive and separative properties, are prepared by partial pyrolysis of polysulfonated macroporous precursor resins, said resins being in turn derived from macroporous poly(vinylaromatic) resins. The particles may be further treated by activating with reactive gases or by functionalization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.