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Catalytic activity of Cu(II)-poly(vinyl alcohol) complex for decomposition of hydrogen peroxide

Journal Article · · J. Polym. Sci., Polym. Chem. Ed.; (United States)
Decomposition of hydrogen peroxide was examined by using Cu(II)-poly(vinyl alcohol) (PVA) as catalyst. The rates of decomposition were measured. Electronic spectra and infrared spectra of Cu(II)-PVA complex systems were determined at various stages of decomposition. Effect of addition of various amines to the Cu(II)-PVA system on catalytic action was considered. The relation between the initial rate and the initial concentration of hydrogen peroxide varied in accordance with the rate expression of Michaelis-Menten type. Cu(II)-PVA complex was found to have a large catalytic activity, while the polymeric PVA ligand and copper(II) ion exhibited less activity than Cu(II)-PVA complex. For hydrogen peroxide decomposition, Cu(II)-PVA complex showed catalytic activity when a stable complex of planar structure formed, while many other polymer complexes reported by other authors showed the catalytic activity when they were in unstable complex forms. An amine substituent has a critical influence on the rate of hydrogen peroxide decomposition. The mechanism in the first step of reaction for hydrogen peroxide decomposition is discussed.
Research Organization:
Shinshu Univ., Ueda-shi, Japan
OSTI ID:
6769239
Journal Information:
J. Polym. Sci., Polym. Chem. Ed.; (United States), Journal Name: J. Polym. Sci., Polym. Chem. Ed.; (United States) Vol. 16:2; ISSN JPLCA
Country of Publication:
United States
Language:
English