Reactive Exns
1) Increase solvent polarity
2) Have specific interactions with analyte
3) Increase the extraction selectivity
Applications of Reactive Extractions in LLE Systems
1) Separation and purification of heavy metal ions such as platinum, Ga (e.g. selective extraction of Ga from coal), etc using organic ligands or strong Lewis bases
2) Extraction of organic compounds from aqueous solutions have also been extensively studied:
a) Separation of amino acids using bis(2-ethylhexyl) phosphoric acids
b) Separation of Penicillin using Amberlite LA-2
Reactive Extraction of Carboxylic Acids in a LLE system
Organic extractants already used are divided into 3 major categories:
1- Hydrocarbons and oxygen containing extractants.
2- Solvents containing oxygen and phosphorous.
3- High molecular weight aliphatic amines
Use of amines in the reactive extraction is limited to tertiary amines with long alkyl chain
شامل 63 اسلاید powerpoint
دانلود پاورپوینت Extraction of Maleic Acid and Phthalic Acid by scCO2 Saturated with Trioctylamine
