Production of hydrogen peroxide

Details Production of hydrogen peroxide Production of hydrogen peroxide

B - Operations, Transporting

01

J

B01J 31/28 (2006.01) B01J 21/18 (2006.01) B01J 23/40 (2006.01) B01J 23/44 (2006.01) B01J 35/00 (2006.01) B01J 37/02 (2006.01) C01B 15/029 (2006.01)

Patent

CA 2128430

The invention a relates to hydrogen peroxide manufacture, and catalyst therefor, by direct oxidation of hydrogen with oxygen in an acidic aqueous medium. The catalyst includes a Group VIII metal on a partially hydrophobic, partially hydrophilic support, such as Pd on fluorinated carbon. Improvements in H2O2 selectivity and catalyst stability are achieved by adding a source of sodium and chloride ions to the reaction medium and, in the case of a fluorinated carbon support, adding a source of fluoride ions.

L'invention porte sur la production de peroxyde d'hydrogène par oxydation directe de l'hydrogène avec de l'oxygène dans un milieu acide aqueux, et sur un catalyseur à cette fin. Le catalyseur comprend un métal du Groupe VIII sur un support partiellement hydrophobe et partiellement hydrophile, comme du Pd sur du carbone fluoré. La sélectivité de H2O2 et la stabilité du catalyseur sont améliorées grâce à l'addition d'une source d'ions sodium et chlorure au milieu réactionnel et, dans le cas du support de carbone fluoré, à l'addition d'une source d'ions fluorure.

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