Journal
CATALYSIS COMMUNICATIONS
Volume 8, Issue 11, Pages 1578-1582Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2007.01.003
Keywords
in situ H2O2 generation; hydrogen peroxide; Hydroxylammonium salt; hydroxylamine; Pd/AlO3 catalyst; oxygen
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In situ generation of H2O2 with high yield can be accomplished by reacting 02 with NH2OH from hydroxylammonium salt [NH2OH.HCl or (NH2OH)(2) . H2SO4] in a neutral aqueous medium using a reusable heterogeneous Pd (1.0 wt%)/Al2O3 catalyst, even at low temperature (10 degrees C), with the formation of harmless by-products (viz. N-2 and water). The presence of KCl or KBr in the medium has beneficial effect. The H2O2 generation is strongly influenced by the pH of medium, reaction period and temperature; best results are obtained at the optimum pH and reaction medium. (c) 2007 Elsevier B.V. All rights reserved.
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