Process for the recovery of selenium from urethanes containing s

Details Process for the recovery of selenium from urethanes containing s Process for the recovery of selenium from urethanes containing s

1976-11-10

1977-10-25

Stern, Edward

Chemistry of inorganic compounds

Selenium or tellurium or compound thereof

Binary compound

423508, 423510, 560 19, C01B 1900

Patent

active

040556301

ABSTRACT:
A process for the recovery of selenium from a urethane solution containing selenium compounds which may be in the form of metallic selenium, inorganic selenium and/or organoselenium compounds which comprises contacting the selenium-containing urethane solution at suitable temperatures with a supported metal or a mixture of metals and/or metal oxide compounds, said metal selectively chosen from Group B metals, i.e., Group IB through VIIIB, metals of the Periodic Table and particularly supported copper and mixtures of copper and other metal oxide compounds of said group.

REFERENCES:
patent: 1915703 (1933-06-01), Towne et al.
patent: 2406666 (1946-08-01), Clark et al.
patent: 2409835 (1946-10-01), Clark et al.
patent: 2474966 (1949-07-01), Addink et al.
patent: 2930678 (1960-03-01), Oberbacher et al.
patent: 3895054 (1975-07-01), Zajacek et al.
patent: 3933624 (1976-01-01), Myers
patent: 3954603 (1976-05-01), Curtin

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