发明名称 |
METHOD OF RECOVERING PLATINUM FROM EXHAUSTED CATALYSTS |
摘要 |
<p>FIELD: precious metal recovery. SUBSTANCE: exhausted catalysts are treated at 95-103 C by mixture containing 4-7 mol/l hydrogen chloride, 1-4 mol/l hydrogen peroxide, and 0.5-3.0 mol/l dimethylformamide and reduction of platinum is performed by products of hydrolytic cleavage of dimethylformamide at pH 3-4 and temperature 90-105 C. Solution with washed out base is used in reducing platinum, after which dimethylformamide is regenerated and solution subjected to dimethylformamide regeneration is reused in catalyst treatment process. EFFECT: increased economical efficiency due to using solvent (dimethylformamide) proper to be regenerated.</p> |
申请公布号 |
RU2103395(C1) |
申请公布日期 |
1998.01.27 |
申请号 |
RU19960118668 |
申请日期 |
1996.09.18 |
申请人 |
PANIJA "ORIJA" |
发明人 |
BUCHIKHIN E.P.;KUZNETSOV A.JU.;CHEKMAREV A.M.;LAVRENT'EV I.P.;LAVRENT'EVA E.A.;BUCHIKHIN E.P.;KUZNETSOV A.JU.;CHEKMAREV A.M.;LAVRENT'EV I.P.;LAVRENT'EVA E.A. |
分类号 |
C22B11/00;B01J23/96;C22B7/00;(IPC1-7):C22B11/00 |
主分类号 |
C22B11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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