Extraction of metal ions from water with tetrapyrazolic macrocycles bound to Merrifield resin and silica gel

• Published in: Journal of applied polymer science Vol. 78; no. 14; pp. 2495 - 2499
• Main Authors: Radi, Smaail, Ramdani, Abdelkrim, Lekchiri, Yahya, Morcellet, Michel, Crini, Grégorio, Janus, Ludovic, Martel, Bernard
• Format: Journal Article
• Language: English
• Published: New York John Wiley & Sons, Inc 27.12.2000; Wiley
• Subjects: Applied sciences; Chemistry; Exact sciences and technology; General and physical chemistry; macrocyclic pyrazoles; metal ions; Miscellaneous; Organic polymers; Physicochemistry of polymers; Properties and characterization; Solid-liquid interface; sorbents; Surface physical chemistry; Metal ion; Styrene derivative copolymer; Experimental study; Macrocycle; Crosslinked copolymer; Chemical modification; Binding capacity; Ionic selectivity; Preparation; Pyrazole derivatives; Silica gel; Sorbent; Nucleophilic substitution; Comparative study; Modified material
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/1097-4628(20001227)78:14<2495::AID-APP90>3.0.CO;2-S

Two macrocyclic tetrapyrazolic compounds having internal cavities of different sizes of were covalently bound both to a porous silica gel and to a Merrifield resin. The ability of these sorbents to extract heavy and akali metal ion from water by a solid–liquid extraction process was studied and compared to results of classical liquid–liquid extraction with the unbound pyrazole compounds. The grafting at the surface of silica does not affect the complexing properties of the ligands. However, the hydrophobic nature of the Merrifield resin has a marked effect, especially on the selectivity of extraction between the alkali metals. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 2495–2499, 2000