纤维素基磁性聚偕胺肟树脂的研究──Ⅳ.树脂吸附KMn0_4机理  

Studies on Cellulose-Based Magnetic Polyamidoxime Adsorbents──Ⅳ. Adsorption Mechanism of Adsorbents for KmnO_4

作　　者：杨超雄[1] 吴锦远[1] 林力克[1] 

机构地区：[1]中国科学院广州化学研究所,广州510650

出　　处：《纤维素科学与技术》1999年第3期20-28,共9页Journal of Cellulose Science and Technology

基　　金：中国科学院广州化学研究所纤维素化学开放研究实验室课题

摘　　要：研究了酸、碱处理的纤维素基磁芯（AMC、BMC）和酸碱处理的纤维素基磁性聚偕胺肟树脂（AMAO、BMAO）吸附KMn民的行为。发现纤维素基磁芯和纤维素基磁性聚偕胺后树脂都能吸附KMn04。纤维素基磁芯还与KMn04反应生成MnⅡ）和Mn（Ⅳ），但纤维素基磁性聚偕胺行树脂则只有通过偕股后基水解析出羟胺，才能与KMnO4发生氧化还原反应。结合吸附前后红外光谱的变化，讨论了吸附机理。It was found that cellulose - based magnetic cores and polyamidoxime adsorbents, tleated with hydrochioric acid and sodium hydroxide, respectively, have the adsorptivity for KMnO4. The ce1lulose - based magnetic cores reacted with KMnO4 to give Mn(lI ) and/or Mn (IV), but the reaction between cellulose - based magnetic polyamidoxin1e adsorbents and KMnO4 occurved only afer the release of NH2OH from polyadridoxime by hydrolyzation of the amidoxime groups. Combined with the observation of changes in IR spectra of magnetic cores and adsorbents before and afer adsolption, the mechanism of the adsorl,tion was prolosed and discussed.

关 键 词：纤维素 磁性树脂 聚偕胺肟 吸附 

分 类 号：O636.11[理学—高分子化学] O647.32[理学—化学]