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Machine translation
1. (WO1979000516) SOLUBLE COMPOUND OF VANADIUM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000516    International Application No.:    PCT/GB1979/000001
Publication Date: 09.08.1979 International Filing Date: 05.01.1979
IPC:
B01D 53/34 (2006.01), C01B 17/05 (2006.01), C01G 31/00 (2006.01)
Applicants:
Inventors:
Priority Data:
1857/78 17.01.1978 GB
Title (EN) SOLUBLE COMPOUND OF VANADIUM
(FR) COMPOSE SOLUBLE DE VANADIUM
Abstract: front page image
(EN)A gas mixture containing hydrogen sulphide is contacted with an aqueous alkaline solution to form bisulphide and thereby remove the hydrogen sulphide from the solution. The bisulphide reacted with a soluble vanadium (V) compound to form sulphur. The vanadium is subsequently reoxidised. The soluble vanadium compound is Na3VO4 . 1/4NaOH.12H2O. It is prepared by adding sodium hydroxide to an aqueous solution containing vanadium (V) at elevated temperature, and then cooling the mixture. The amount of sodium hydroxide added is sufficient to increase the mole ratio of Na to V in the solution (preferably from at least 2:1) to at least 3:1 (and preferably to at least 6:1).
(FR)Un melange gazeux contenant du sulfure d"hydrogene est mis en contact avec une solution aqueuse alcaline pour former un bisulfure ce qui a pour resultat d"enlever le sulfure d"hydrogene de la solution. On fait reagir le bisulfure avec un compose soluble de vanadium (V) pour former un sulfure. Le vanadium est ensuite reoxyde. Le compose soluble de vanadium est le Na3VO4 . 1/4 NaOH.12H2O. On le prepare en ajoutant de l"hydroxyde de sodium a une solution aqueuse contenant du vanadium (V) a temperature elevee puis en refroidissant le melange. La quantite d"hydroxyde de sodium ajoutee est suffisante pour augmenter le rapport molaire du Na au V dans la solution (de preference d"au moins 2: 1) a au moins 3: 1 (et de preference a au moins 6: 1).
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)