| 发明名称 |
PROCESS FOR THE PREPARATION OF CHROMIC ACID |
| 摘要 |
The invention relates to a process for the electrolytic preparation of chromic acid, in which ferrochromium is dissolved in sulphuric acid and chromium is precipitated as Cr(III) hydroxide under reducing conditions, redissolved in a solution containing chromic acid and processed electrolytically to produce chromic acid. |
| 申请公布号 |
ZA9010064(B) |
申请公布日期 |
1991.10.30 |
| 申请号 |
ZA19900010064 |
申请日期 |
1990.12.14 |
| 申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
NORBERT LOENHOFF;LUDWIG SCHMIDT;HANS-DIETER BLOCK;RAINER WEBER |
| 分类号 |
C25B1/00;B01J47/12;C01G37/033;C25B1/22;C25B15/08;C25C1/10 |
主分类号 |
C25B1/00 |
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