aldoximes and ketoximes for extracting copper

YSJ

Aldoxime - an overview ScienceDirect Topics

Aldoximes and ketoximes are reduced to hydroxylamines with an assortment of mild reducing reagents including BH 3 /THF at moderate temperatures 181 BH 3 ·pyridine/HCl 20182183 BH 3 ·NMe 3 /7 M HCl 20183 LiBH 4 184 NaBH 4 in basic 185 or acidic e.g. carboxylic acid 14 media and NaBH 3 CN with HCl 151626 or AcOH. 20186 The products obtained with the latter two reagents depend

Solvent Extraction - ResearchGate

The organic extractants used in the copper industry are aldoximes and ketoximes which are mixed to give optimum extraction strip and phase separation properties.

Ketoxime - an overview ScienceDirect Topics

Aldoximes and ketoximes are reduced to hydroxylamines with an assortment of mild reducing reagents including BH 3 /THF at moderate temperatures 181 BH 3 ·pyridine/HCl 20182183 BH 3 ·NMe 3 /7 M HCl 20183 LiBH 4 184 NaBH 4 in basic 185 or acidic e.g. carboxylic acid 14 media and NaBH 3 CN with HCl 151626 or AcOH. 20186 The

US8460623B2 - Methods of metal extraction using oximes

Provided are methods using ketoximes and/or aldoximes including 3-methyl-5-alkylsalicylaldoxime and/or 3-methyl-5-alkyl-2-hydroxyacetophenone oxime in reagent compositions for metal extraction/isolation. One such method is of extracting a metal from a nitrate-containing aqueous solution.

PDF Customising copper:iron selectivity in modified

Ketoximes show less while retaining the other benefits offered by ester-modified aldoximes. The results of an integrated solvent extraction-electrowinning pilot-plant trial are presented in

EPO - T 0205/13 Copper extractant/CYTEC of 1.12.2015

In the copper extraction process of document D3 see D3 column 6 lines 2 to 6 specific aldoximes and ketoximes namely 5-nonylsalicylaldoxime and 5-nonyl-2-hydroxyacetophenone oxime are disclosed as constituents of the preferred extractant composition which fall under the generic formula of claim 1 of the first auxiliary request.

Oxime - Wikipedia

The condensation of aldehydes with hydroxylamine gives aldoximes and ketoximes are produced from ketones and hydroxylamine. In general oximes exist as colorless crystals and are poorly soluble in water. Therefore oximes can be used for the identifi ion of ketone or aldehyde.

US6342635B1 - Ketoximes processes therefor and copper

Ketoximes processes for their preparation compositions containing them and a copper extraction process using the compositions. One process for the preparation of the ketoximes comprises the following steps: A reacting a phenol with a monocarboxylic acid monocarboxylic acid halide or monocarboxylic acid anhydride in an inert organic solvent in the presence of an acid alyst to esterify

Previous: cheap df hammer mill grinder suppliers china
Next: costeffective hematite iron ore equipment in low investmen

Related Articles

aldoximes and ketoximes for extracting copper