Production of anhydrous aluminum chloride from clay using catalyst and recycling of silicon chloride
US4096234A · kind A · utility
11Cited by
3References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 23, 1977 |
| Grant date | Jun 20, 1978 |
| Priority date | — |
| Expiry date | Mar 23, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Aluminum chloride is produced from clay containing aluminum oxide and silicon oxide by chlorinating the clay through contact with a mixture consisting essentially of a chlorinating agent, a reducing agent, an alkali metal compound catalyst, and silicon chloride; and thereafter separating the reaction products from the chlorination step; and recycling back to the chlorination step substantially all the silicon chloride separated from the reaction products to thereby promote the chlorination of the aluminum oxide in the clay while suppressing chlorination of the silicon oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.