Ion complexation by silica-immobilized polyethyleneimines

Details Ion complexation by silica-immobilized polyethyleneimines Ion complexation by silica-immobilized polyethyleneimines

1992-06-04

1993-03-02

Bascomb, Jr., Wilbur

Liquid purification or separation

Processes

Ion exchange or selective sorption

210688, 210679, B01D 1504, B01D 1508

Patent

active

051906600

ABSTRACT:
Metal ions are removed from solution by complexing with an immobilized polyethyleneimine, formed by first bonding a silane-propyl bridge to a substrate particle of silica or silicate, larger than 200 mesh. Then, polyethyleneimine is covalently bonded by a nitrogen to the bridge. Due to the spacing established by the bridge between the polyethyleneimine and substrate, the polyethyleneimine maintains high ion complexation capacity.

REFERENCES:
patent: 4540486 (1985-09-01), Ramsden
patent: 4721573 (1988-01-01), Ramsden et al.
patent: 5066395 (1991-11-01), Ramsden et al.
patent: 5087359 (1992-02-01), Kakodkar et al.
patent: 5092992 (1992-03-01), Crane et al.

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