Preparation of Cellulose Derivatives Selectively Adsorbing Metal Ions

选择性吸附金属离子的纤维素衍生物的制备

• 批准号: 07651089
• 负责人: NAKAMURA Shigeo
• 金额: $ 1.34万
• 依托单位: Kanagawa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07651089/
• 关键词: Cellulose derivatives; Chlorodeoxycellulose; Bromodeoxycellulose; Metal ions; Selective adsorption; キレート

Cellulose derivatives such as hydrazinodeoxycellulose (HDC), carboxyalkyl hydrazinodeoxycellulose (alpha- and beta-CAHDC), alkylaminodeoxycellulose (AADC) and carboxymethylaminodeoxycellulose (CNADC) were prepared from 6-chloro-deoxycellulose (CDC). They have metal ion-adsorbing groups. The preparation conditions and their adsorbing behavior of divalent heavy metal ions from aqueous dilute solutions were examined in detail. In strongly acidic solutions, these adsorbents are highly swollen because of protonation of their amino groups, and do not adsorb heavy metal ions. However, metal ions are adsorbed rapidly from weakly acidic solutions and the amount of adsorption increases with increasing pH.The adsorption of metal ions occurs in the order of Cu^<2+>>Cd^<2+>>Co^<2+>>Ni^<2+> irrespective of adsorbents and Cu^<2+> ions are selectively adsorbed from solutions containing metal ion mixtures irrespective of adsorbents.The reaction conditions of bromination of cellulose and methyl beta-D-glucopyranoside were also examined in homogeneous systems in order to establish the preparation conditions of bromodeoxycellulose which is more reactive as an intermediate. The resulting bromodeoxycellulose was reacted with 8 thiols and it was found that the products with higher degree of substitution was obtained in homogeneous systems than in heterogeneous systems.

从6-氯-脱氧纤维素（CDC）制备纤维素衍生物如肼基脱氧纤维素（HDC）、羧烷基肼基脱氧纤维素（α-和β-CAHDC）、烷基氨基脱氧纤维素（AADC）和羧甲基氨基脱氧纤维素（CNADC）。它们具有金属离子吸附基团。研究了该树脂的制备条件及其对稀溶液中二价重金属离子的吸附性能。在强酸性溶液中，这些吸附剂由于其氨基的质子化而高度溶胀，并且不吸附重金属离子。然而，在这方面，金属离子在弱酸性溶液中吸附迅速，吸附量随pH值的增加而增加，吸附顺序为Cu^<2+>>Cd^<2 +>>Co^<2+>>Ni^<2+>，与吸附剂和Cu^<2+>无关。本文研究了纤维素溴化反应的反应条件，甲基β-D-吡喃葡萄糖苷也在均相体系中进行了研究，以建立作为中间体更具反应性的溴脱氧纤维素的制备条件。溴代脱氧纤维素与8个硫醇反应，发现在均相体系中得到的产物取代度高于非均相体系。

项目成果

K.Furuhata,S.Nakamura et al: "Bromination of cellulose withtribromoimidazole,triphenylphosphine and imidazole under homogeneous conditions in LiBr-dimethylacetoamide" Carbohydrate Polymers. 26. 25-29 (1995)

K.Furuhata、S.Nakamura 等人：“在均匀条件下，在溴化锂-二甲基乙酰胺中用三溴咪唑、三苯基膦和咪唑对纤维素进行溴化”碳水化合物聚合物。

S.Nakamura and M.Amano: "Preparation of Hydrazinodeoxycellulose and Carboxyalkyl Hydrazinodeoxy cellulose and Their Adsorption Behavior of Heavy Metal Ions" J.Polym.Sci. : Polym.Chem.(in press).

S.Nakamura 和 M.Amano：“肼脱氧纤维素和羧烷基肼脱氧纤维素的制备及其对重金属离子的吸附行为”J.Polym.Sci。

K.Furuhata, N.Aoki, S.Suzuki, M.Sakamoto, Y.Saegusa, and S.Nakamura: "Bromination of cellulose with tribromoimidazole under homogeneous conditions in LiBr-dimethylacetamide" Carbohydrate Polymer. 26. 25-29 (1995)

K.Furuhata、N.Aoki、S.Suzuki、M.Sakamoto、Y.Saegusa 和 S.Nakamura：“在均匀条件下，在溴化锂-二甲基乙酰胺中用三溴咪唑对纤维素进行溴化”碳水化合物聚合物。

Ken-ichi Furuhata: "Synthesis of methyl 3,6-deibromo-3,6-dideoxy-β-D-allopyranoside and -glucopyranoside, and their interconversic in the presence of bromide ion" Carbohydrate Research. 275. 17-24 (1995)

Ken-ichi Furuhata：“甲基 3,6-脱溴-3,6-二脱氧-β-D-吡喃糖苷和吡喃葡萄糖苷的合成，以及它们在溴离子存在下的相互转化”碳水化合物研究 275. 17-24 (1995)。 ）

N.Aoki, K.Furuhata, Y.Saegusa, S.Nakamura, and M.Sakamoto: "Reaction of 6-Bromo-6-deoxycellulose with Thiols in LiBr-N,N-Dimethyl-acetamide" J.Appl.Polym.Sci.61. 1173-1185 (1996)

N.Aoki、K.Furuhata、Y.Saegusa、S.Nakamura 和 M.Sakamoto：“6-溴-6-脱氧纤维素与 LiBr-N,N-二甲基乙酰胺中硫醇的反应”J.Appl.Polym。