Materials and methods for the separation of copper ions and...

Details Materials and methods for the separation of copper ions and... Materials and methods for the separation of copper ions and...

2006-03-07

2006-03-07

Bos, Steven (Department: 1754)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

C423S100000, C423S139000, C210S688000

Reexamination Certificate

active

07008601

ABSTRACT:
A silica-polyamine based extraction material removes selected transition metal ions from solution in the presence of iron ions. The silica-polyamine base is a reaction product of a polyamine and a covalently anchored trifunctional hydrocarbylsilyl that yields non-crosslinked amino groups to which pyridine function group is attached. The extraction material is particularly useful in selectively removing copper from low concentration, low pH leach solutions separating copper from ferric iron or chloride ions. The product is a durable, high capacity extraction material that selectively captures copper at high flow rates and releases that copper into highly concentrated solutions.

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