蒽醌磺酸钠用于竹浆氧脱木素的研究  

Study on Application of Anthraquinone Sodium Sulfonate to Oxygen Delignification of Bamboo Pulp

作　　者：曹石林[1] 詹怀宇[1] 付时雨[1] 陈礼辉[2] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510641 [2]福建农林大学材料工程学院,福建福州350002

出　　处：《中国造纸》2006年第8期5-8,共4页China Pulp & Paper

基　　金：国家自然科学基金(20477046);福建省科技厅重大专项(2004HZ03-4);福建农林大学青年教师科研基金(04B26)资助

摘　　要：通过研究邻苯三酚自氧化体系产生的超氧阴离子自由基(O2.-)对EMCC竹浆卡伯值和黏度的影响,探讨了蒽醌磺酸钠在EMCC竹浆氧脱木素过程中的作用。研究表明,O2.-有助于脱除EMCC竹浆中的木素,而黏度降低很少;蒽醌磺酸钠能促进邻苯三酚自氧化体系中O2.-的产生和邻苯三酚与EMCC竹浆的反应,提高EMCC竹浆氧脱木素过程的木素脱除率及脱木素选择性。Several oxygen-containing species are present during oxygen delignification, including hydroxyl radical （HO·） superoxide anion radical （O2· - ） and so on. In this study, the aim is to investigate the effect of superoxide anion radical on deligniftcation and the method to accelerate the generation of O2·- during oxygen delignification. Superoxide anion radical was generated by the auto-oxidation of 1,2,3-trihydroxybenzene and the relative concentration of O2·- was determined by spectrophotometry. Anthraquinone-2-sulfonic acid sodium could accelerate the generation of superoxide anion radical when it was added in the auto-oxidation system of 1, 2,3-trihydroxybenzene. The results indicated that the superoxide anion radical degraded lignin with very little degradation of carbohydrates. The selectivity of delignification could be improved in the bamboo EMCC pulp oxygen delignification process when the anthraquinone-2-sulfonic acid sodium was added.

关 键 词：超氧阴离子自由基 蒽醌磺酸钠 氧脱木素 脱木素选择性 木素脱除率 

分 类 号：TS745[轻工技术与工程—制浆造纸工程]