Composition of matter

Details Composition of matter Composition of matter

B - Operations, Transporting

01

J

B01J 39/12 (2006.01) B01J 45/00 (2006.01) C02F 1/42 (2006.01) C22B 3/42 (2006.01)

Patent

CA 2221612

A composition of matter is provided in which a phosphonic acid or phosphonic acid ester group is linked through a thioether residue to a silicon atom which is further covalently bonded to a solid inorganic support. The compositions can be employed to selectively separate metal ions having high cationic charge from a solution containing lower-charged cations, and also to selectively separate highly charged cations having a relatively high charge density from cations having the same charge, but a lower charge density.

L'invention se rapporte à une composition de substances dans laquelle un acide phosphonique ou un groupe d'esters d'acide phosphonique est lié par un reste de thioéther à un atome de silicium qui est également lié de manière covalente à un support inorganique solide. Les compositions peuvent être utilisées pour séparer sélectivement des ions métalliques de charge cationique élevée d'une solution contenant des cations faiblement chargés, et pour séparer également sélectivement des cations fortement chargés ayant une densité de charge relativement élevée des cations ayant la même charge, mais une densité de charge inférieure.

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