Patent · US Expired

Catalytic oxidation of peroxy salts

US7238290B2 · kind B2 · utility

3Cited by

5References

14Claims

0Family size

Assignee

BIOLAB HOLDINGS, INC. · IL

Inventors

Nidhi Rawat · Duluth, US
David F. Purdy · Decatur, US
Thomas M. Lachocki · Austin, US

Key dates

Filing date	May 7, 2003
Grant date	Jul 3, 2007
Priority date	—
Expiry date	May 18, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC02F2303/20
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

Transition metal ions have the ability to increase the oxidation performance of the inorganic peroxy salts at room temperature by possibly lowering their activation energy or by producing more reactive free radicals. When two transition metal salts are used together to decompose dipersulfate, it provides synergistic oxidation activity, better than obtained by dipersulfate or dipersulfate with either copper or zinc alone. The transition metals mentioned are the water soluble salts of copper and zinc. Oxidation performance of sodium dipersulface in presence of catalytic amount of copper and zinc salts was determined by measuring the destruction of crystal violet dye at a wavelength of 589 nm.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.