Bleaching mechanical pulps with H2O2:: A unique alkali-free approach

被引：8

作者：

Depew, MC ^{[1
]}

Antimirova, T ^{[1
]}

Chen, YG ^{[1
]}

Wan, JKS ^{[1
]}

机构：

[1] Queens Univ, Dept Chem, Kingston, ON K7L 3N6, Canada

来源：

RESEARCH ON CHEMICAL INTERMEDIATES | 1999年 / 25卷 / 05期

关键词：

D O I：

10.1163/156856799X00086

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A unique hydrogen peroxide bleaching process for mechanical pulps is described, in which the bleaching is carried out at near neutral pH and without the use of any soluble alkali or alkali generating reagents for peroxide activation. Neither metal chelating agents nor peroxide stabilizer agents such as silicates, are required. ISO brightness and b* values at least as good as, and in many cases considerably better than, conventional alkali peroxide bleaching can be obtained by this process.

引用

页码：497 / 504

页数：8

共 16 条

[1]

ANDREWS DH, 1979, PEROXIDE BLEACHING, P211

[2]

Dence C.W., 1988, J PULP PAP SCI, V14, P126

[3]

FRANCIS RC, 1992, Patent No. 5080754

[4]

HEIMBERGER SA, 1993, Patent No. 5248389

[5] PEROXIDE BLEACHING REACTIONS UNDER ALKALINE AND ACIDIC CONDITIONS [J].

HOBBS, GC ;

ABBOT, J .

JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY, 1991, 11 (02) :225-246

[6]

HOLLADAY PC, 1963, TAPPI MONOGRAPH SERI, V27, P180

[7]

KALISCH JH, 1969, Patent No. 3479249

[8]

KALISH JH, 1968, Patent No. 3617435

[9]

KALISH JH, 1969, PULP PAPER MAGAZINE, P55

[10]

LINDQVIST M, 1979, SVENSK PAPPERSTIDNIN, P16

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