Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub


    A polyoxometalate-catalyzed electrochemical process has shown good selectivity in delignifying pulp. This breakthrough in redox catalysis shows promise for the development of a new environmentally benign technology for pulp bleaching. The electrochemical process, applied with a mildly alkaline electrolyte solution containing trace amounts of a vanadium-based polyoxometalate, K5[SiVW11O40], decreased the kappa number of a softwood Kraft pulp by about 40% without significant change in the viscosity of the pulp. In a similar electrochemical process, a softwood semi-bleached Kraft pulp was further bleached to a high brightness pulp, above 85% ISO, by electrolysing a borax-based electrolyte activated with tetraacetylethylenediamine in a pulp suspension.

    Publication Notes

    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.


    Laroche, Helene; Sain, Mohini; Houtman, Carl; Daneault, Claude. 2001. POM-assisted electrochemical delignification and bleaching of chemical pulp. Cellulose chemistry and technology. Vol. 35, nos. 5-6 (2001): Pages 503-511.


    Wood pulp, viscosity, vanadium, electrochemistry, sulphate pulping process, polyoxometalates, bleaching, pulping, chemical reactions, catalysis, lignin, oxidation, hydrogen, ion exchange, tetraacetylenediamine, softwoods, pulp and paper processes, pulp, delignification, brightness, chemical pulp, electrochemistry

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page