Oxidation of hydroquinone to  p ‐benzoquinone catalyzed by Cu(II) supported on chitosan flakes | Zendy

Guibal Eric | Zendy; Vincent Thierry | Zendy; Touraud Evelyne | Zendy; Colombo Simon | Zendy; Ferguson Andrew | Zendy

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Oxidation of hydroquinone to p ‐benzoquinone catalyzed by Cu(II) supported on chitosan flakes

Author(s) -

Guibal Eric,

Vincent Thierry,

Touraud Evelyne,

Colombo Simon,

Ferguson Andrew

Publication year - 2006

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.23702

Subject(s) - oxidizing agent , hydroquinone , hydrogen peroxide , benzoquinone , catalysis , chemistry , chitosan , substrate (aquarium) , peroxide , copper , inorganic chemistry , polymer chemistry , organic chemistry , geology , oceanography

Copper (sorbed on chitosan flakes) was used as a catalyst for the oxidation of hydroquinone, with dioxygen (from air) and hydrogen peroxide as oxidizing agents. The supported catalyst was very efficient at oxidizing hydroquinone into p ‐benzoquinone. With hydrogen peroxide at pH 5.8, drastic oxidizing conditions led to the formation of subproducts. With a short contact time, together with the use of a low hydrogen peroxide concentration and a small amount of the catalyst, the formation of subproducts could be minimized. The influence of the catalyst/substrate and hydrogen peroxide/substrate ratios was investigated to determine optimum experimental conditions for a high initial oxidation rate and a high production of p ‐benzoquinone. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 3034–3043, 2006

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