PROCESS FOR DELIGNIFICATION AND BLEACHING OF PAPER PULP USING ACTIVATED HYDROGEN PEROXIDE

摘要

The invention relates to a process for the delignification and bleaching of paper pulp, comprising at least one step of bringing the paper pulp into contact with hydrogen peroxide and a molybdenum-based complex of formula (I): in which R represents an unsaturated C5-C6 cycloalkyl group or an unsaturated C5-C6 heterocycloalkyl group, being substituted or unsubstituted, and Ar represents an aryl group, optionally having one or more substitution(s) on the aromatic ring(s) by one or more of the following groups: - linear or branched C1-C4 alkyl, - halogen, -NO2, -OH, -COOH.