Borohydride exchange resins and their uses as reducing agents an

Details Borohydride exchange resins and their uses as reducing agents an Borohydride exchange resins and their uses as reducing agents an

1977-02-10

1978-08-15

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

2605676M, 2605676P, 562862, 252432, 423 23, 423 87, 423 99, 423138, 423289, 521 31, 521 32, 521 38, 526 24, C07C 2914, C22B 4300, C07C 9700

Patent

active

041070992

ABSTRACT:
Anion exchange resins containing borohydride counter ions display essentially the same chemical activity as solutions of sodium borohydride but have the added advantage that products treated therewith are not contaminated with sodium ions or borate ions. Thus, alcohols can now be freed of carbonyl components without thereby being contaminated with borate; metal ions, such as silver, can be reduced to the free element; metal ions of groups IV-A to VI-A can be converted to volatile metal hydrides; and transition metal ions can be converted to the boride. The anion exchange resin is prepared by treating a strong base anion exchanger with aqueous sodium borohydride or sodium cyanoborohydride. Regeneration of the borohydride form from the borate proceeds directly with aqueous sodium borohydride.

REFERENCES:
patent: 2723245 (1955-11-01), Wheaton
patent: 4025467 (1977-05-01), Brock
Ion Exchange Resins, R. Kunin, John Wiley & Sons, pp. 60-63 (2nd ed.).

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