发明名称 |
METHOD OF EXTRACTING CHROMIUM ( VI ) FROM AQUEOUS SOLUTIONS |
摘要 |
FIELD: chemistry. ^ SUBSTANCE: chromium (VI) ions are extracted from acidic aqueous solutions with the protonated form of N',N'-dipentylhydrazide 2-ethylhexanoic acid in form of its salt with sulphuric acid or hydrochloric acid in kerosene. Concentration of sulphuric acid is greater than 3.5 mol/l and concentration of hydrochloric acid is greater than 4 mol/l. A modifier - 0.04% solution of 2-ethylhexanol is used to prevent formation of a third phase. ^ EFFECT: more efficient extraction of chromium in strongly acidic media, simple process and wide range of extraction reagents. ^ 5 tbl, 4 ex |
申请公布号 |
RU2383380(C1) |
申请公布日期 |
2010.03.10 |
申请号 |
RU20080135870 |
申请日期 |
2008.09.04 |
申请人 |
GOSUDARSTVENNOE OBRAZOVATEL'NOE UCHREZHDENIE VYSSHEGO PROFESSIONAL'NOGO OBRAZOVANIJA "PERMSKIJ GOSUDARSTVENNYJ UNIVERSITET";INSTITUT TEKHNICHESKOJ KHIMII URAL'SKOGO OTDELENIJA ROSSIJSKOJ AKADEMII NAUK |
发明人 |
BATUEVA TAT'JANA DMITRIEVNA;RADUSHEV ALEKSANDR VASIL'EVICH;DEGTEV MIKHAIL IVANOVICH |
分类号 |
B01D11/04;C01G37/00 |
主分类号 |
B01D11/04 |
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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