Peroxide decomposition catalyst

Details Peroxide decomposition catalyst Peroxide decomposition catalyst

2011-08-02

2011-08-02

Ward, Jessica L (Department: 1735)

Chemistry of inorganic compounds

Oxygen or compound thereof

C436S085000, C548S108000

Reexamination Certificate

active

07988944

ABSTRACT:
An object of the present invention is to provide a catalyst which decomposes a peroxide effectively and economically under a high temperature while suppressing generation of free radicals, and the present invention provides a peroxide decomposition catalyst containing a base metal atom, wherein a value A indicating a free radical generation amount represented by the (equation 1) is not more than 0.20, and a value B indicating a reaction rate represented by the (equation 2), which can be easily applied to utility such as an agent for preventing deterioration of a polymer electrolyte-type fuel cell and a water electrolysis apparatus, and an antioxidant for medicaments, agrochemicals and foods.in-line-formulae description="In-line Formulae" end="lead"?A=(Mw(S)/Mw)−1  (equation 1)in-line-formulae description="In-line Formulae" end="tail"?(wherein Mw is a weight average molecular weight of poly(sodium 4-styrenesulfonate) after a hydrogen peroxide decomposition test in the test at 80° C. in the presence of poly(sodium 4-styrenesulfonate), and Mw(S) is a weight average molecular weight of poly(sodium 4-styrenesulfonate) before the test)in-line-formulae description="In-line Formulae" end="lead"?B=N(PO)/N(cat)  (equation 2)in-line-formulae description="In-line Formulae" end="tail"?(wherein N(po) is a mole number of hydrogen peroxide decomposed per 20 minutes in a hydrogen peroxide decomposition test in the (equation 1), and N(cat) is a mole number per metal atom of a catalyst used).

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