Cation ion exchange of coal
US4468231A · kind A · utility
51Cited by
9References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 1982 |
| Grant date | Aug 28, 1984 |
| Priority date | — |
| Expiry date | May 3, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S44/905
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a one-step ion-exchange method for organically bonding alkali and alkaline-earth metals onto coal. The method comprises contacting the coal, at a temperature from about 20.degree. C. to about 100.degree. C. with, (a) an aqueous solution containing cations of one or more metals selected from the group consisting of alkali and alkaline-earth metals, and (b) an oxidizing gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.