高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (4): 719.

• 论文 • 上一篇    下一篇

新型含氮、硫纤维素螯合树脂的合成及其吸附性能

董绮功, 张军平, 李亚荣, 贾婴琦   

  1. 西北大学化学系, 西安 710069
  • 收稿日期:2001-12-27 出版日期:2003-04-24 发布日期:2003-04-24
  • 通讯作者: 董绮功(1941年出生),男,教授,主要从事纤维素科学研究.E-mail:zhangj_p@sina.com E-mail:zhangj_p@sina.com
  • 基金资助:

    陕西省自然科学基金(批准号:98C29)资助

Synthesis and Adsorption Properties of New Type Chelating Cellulose Resins Containing Sulfur and Nitrogen

DONG Qi Gong, ZHANG Jun Ping, LI Ya Rong, JIA Ying Qi   

  1. Department of Chemistry, Northwest University, Xi'an 710069, China
  • Received:2001-12-27 Online:2003-04-24 Published:2003-04-24

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被引次数

119

摘要： 将稻壳纤维素的氯化产物(CDC)分别与水合肼、乙二胺、二乙烯三胺、三乙烯四胺、丁二胺和己二胺反应,合成了6种含氮纤维素螯合树脂(ADC-1～ADC-6);在碱性条件下用环硫氯丙烷交联ADC合成了6种新型含氮、硫纤维素螯合树脂(TADC-1～TADC-6),研究了合成条件和ADC,TADC树脂对金属离子的吸附性能.结果表明,ADC树脂对Cu2+,Cr3+,Ni2+,Hg2+,Zn2+等离子有较好的吸附性,对Hg2+吸附容量可达0.5mmol/g左右;TADC树脂对Ag+,Cu2+,Hg2+等离子有较好的吸附性,对Hg2+和Ag+吸附容量可达1.1mmol/g和1.9mmol/g左右;强酸性条件下,ADC和TADC树脂的吸附容量都降低,它们对金属离子的吸附顺序分别为Hg2+>Cu2+>Ni2+和Ag+>Hg2+>Cu2+,树脂用10%的氨水解吸附可重复使用.

关键词: 稻壳纤维素, 螯合树脂, 环硫氯丙烷, 吸附, 金属离子

Abstract: Rice husk cellulose was treated by thionyl chloride to give 6 chlorodeoxycellulose(6 CDC), which was treated with anhydrous hydrazine, ethylenediamine, diethylenetriamine, triethylenetetramine, 1,4 diaminobutane and hexamethylenediamine respectively in DMSO at 100 ℃ giving six chelating resins(ADC-1-ADC-6). The cross linking of ADC with chloromethylthiiane in the presence of alkaline gave six new chelating resins(TADC-1TADC-6) which contain sulfur and nitrogen. The conditions of synthesis for CDC, ADC and TADC were studied. The adsorption properties of ADC-resins and TADC resins for metal ions were thoroughly studied. It was found that ADC resins possessed high capacities for Hg 2+ (about 0.5 mmol/g) and TADC resins did for Hg 2+ (1.1 mmol/g) and Ag+(1.9 mmol/g). The effect of pH value on adsorption capacities of ADC resins was more remarkable than on TADC resins. The adsorption capacities of ADC resins and TADC resins were in the order Hg 2+ >Cu 2+ >Ni 2+ and Ag+>Hg 2+ >Cu 2+ and they can be reused by desorption of 15% ammonia hydroxide.

Key words: Rice husk cellulose, Chelating resins, Chloromethylthiiane, Adsorption, Metal ions

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