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

1975-08-12

1977-07-26

Vertiz, O. R.

Chemistry of inorganic compounds

Selenium or tellurium or compound thereof

Elemental selenium or tellurium

C01B 1900, C01B 2514

Patent

active

040383768

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: 2778779 (1957-01-01), Donaldson
patent: 3387928 (1968-06-01), Doumas
patent: 3546103 (1970-12-01), Hamner et al.
patent: 3577216 (1971-05-01), Weiss et al.
patent: 3933624 (1976-01-01), Myers
patent: 3954603 (1976-05-01), Curtin

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