氧脱木素过程中超氧阴离子自由基的控制

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氧脱木素过程中超氧阴离子自由基的控制

曹石林^a,b; 詹怀宇^a; 付时雨^a; 陈礼辉^b

^a State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China ^b Institute of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-02-28 发布日期:2007-02-28
通讯作者: 曹石林

Regulation of superoxide anion radical during the oxygen delignification process

CAO Shilin^a,b; ZHAN Huaiyu^a; FU Shiyu^a; CHEN Lihui^b

^a State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China ^b Institute of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China

Received:1900-01-01 Revised:1900-01-01 Online:2007-02-28 Published:2007-02-28
Contact: CAO Shilin

摘要/Abstract

摘要： In this study, the superoxide anion radicals were generated by the auto-oxidation of 1,2,3-trihydroxybenzene and determined by UV spectrophotometry, and the reaction was found to be facilitated by anthraquinone-2-sulfonic acid sodium salt. The bamboo kraft pulps were treated by the 1,2,3-trihydroxybenzene auto-oxidation method or the 1,2,3-trihydroxybenzene auto-oxidation combined with anthraquinone-2-sulfonic acid sodium salt to show the ef-fect of the superoxide anion radicals during the oxygen delignification of bamboo kraft pulp and the enhancing af-fect of anthraquinone compounds as an additive on delignification. The results indicated that the superoxide anion radicals could react with lignin and remove it from pulp with negligible damage on cellulose, and the an-thraquinone-2-sulfonic acid sodium salt could facilitate the generation of superoxide anion radical to enhance delig-nification of pulps. The oxygen delignification selectivity could be improved using the 1,2,3-trihydroxybenzene auto-oxidation system combined with anthraquinone-2-sulfonic acid sodium salt.

关键词: superoxide anion radical;anthraquinone-2-sulfonic acid sodium salt;oxygen delignification;selectivity

Abstract: In this study, the superoxide anion radicals were generated by the auto-oxidation of 1,2,3-trihydroxybenzene and determined by UV spectrophotometry, and the reaction was found to be facilitated by anthraquinone-2-sulfonic acid sodium salt. The bamboo kraft pulps were treated by the 1,2,3-trihydroxybenzene auto-oxidation method or the 1,2,3-trihydroxybenzene auto-oxidation combined with anthraquinone-2-sulfonic acid sodium salt to show the ef-fect of the superoxide anion radicals during the oxygen delignification of bamboo kraft pulp and the enhancing af-fect of anthraquinone compounds as an additive on delignification. The results indicated that the superoxide anion radicals could react with lignin and remove it from pulp with negligible damage on cellulose, and the an-thraquinone-2-sulfonic acid sodium salt could facilitate the generation of superoxide anion radical to enhance delig-nification of pulps. The oxygen delignification selectivity could be improved using the 1,2,3-trihydroxybenzene auto-oxidation system combined with anthraquinone-2-sulfonic acid sodium salt.

Key words: superoxide anion radical, anthraquinone-2-sulfonic acid sodium salt, oxygen delignification, selectivity

曹石林, 詹怀宇, 付时雨, 陈礼辉. 氧脱木素过程中超氧阴离子自由基的控制[J]. , DOI: .

CAO ,Shilin, ,ZHAN ,Huaiyu, ,FU ,Shiyu, CHEN ,Lihui. Regulation of superoxide anion radical during the oxygen delignification process[J]. , DOI: .

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