Process for the delignifcation and bleaching of a lignocellulose material
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United States of America Patent
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May 20, 1997
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N/A
app pub date -
Feb 23, 1995
filing date -
Jun 22, 1992
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Expired
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Abstract
A method is provided for delignifying and bleaching a lignocellulose material, wherein an aqueous solution of a redox catalyst and an oxidant is reacted with the material. The catalyst comprises an organometallic cation of the general formula [(1)Mno.sub.2 Mn(L)].sup.n+, wherein Mn is manganese (III) or (IV) oxide, the two Mn's of this cation may form a pair in a III-III, III-IV or IV-IV oxidative state, n is 2, 3 or 4, O is oxygen, and L is a ligand comprising 4 nitrogen atoms co-ordinating the manganese.
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