含硫弱酸性酚醛树脂对Ag+的吸附性能

含硫配位原子的螯合树脂对过渡金属离子尤其是贵金属离子具有良好的吸附性能[1]。螯合树脂的母体交联聚苯乙烯、聚甲基丙烯酸甲酯[2]具有疏水性,即使引入螯合基团其疏水性仍很强,对在水溶液中的吸附很不利。而含有酚醛骨架的螯合树脂具有亲水性[3]。本文以酚醛树脂为大分子骨架,通过化学反应连接上具有强配位原子硫的巯基羧酸,研究了该巯基弱酸性酚醛树脂对Ag+在各种条件下的吸附性能。1　实验部分1 1　仪器与试剂NicoletMAGNA550(SeriesⅡ)红外光谱仪,SHA C水浴恒温振荡器,3200原子吸收分光光度计,JSM 5600LV扫描电镜,Quest.le…     

胺固化环氧酚醛树脂对Hg~(2+)的吸附性能

螯合树脂能与金属离子形成稳定的配合物,在无机、冶金、分析药物、催化、海洋化学、放射化学、环境保护各领域都有非常重要的应用[1-3]。我们曾以酚醛树脂为大分子骨架与多胺反应制备了一系列螯合树脂并对其结构及对多种金属离子的吸附性能进行了探讨[4,5]。本文则以线型环氧酚醛树脂为大分子骨架、多乙烯多胺为固化剂,制备了五种不同氮含量的氨基环氧酚醛螯合树脂,并考察其对金属离子Ｈｇ2+的吸附性能。1　实验部分1.1　仪器与试剂ＮｉｃｏｌｅｔＭＡＧＮＡ ＩＲ550(ＳｅｒｉｅｓＩＩ)红外分光光度计,ＳＨＡ-Ｃ水浴恒温振荡器,ＰＥ2000…     

巯基树脂对重金属离子的吸附性能

研究了自合成的巯基树脂对重金属离子Pb^2 、Cu^2 、Cd^2 ．Ni^2 、Co^2 的吸附容量、吸附动力学、等温吸附过程等静态吸附性能，同时研究了影响吸附的因素和吸附机理．结果表明，该树脂对软酸型重金属离子吸附容量高．pH=5．0-5．7，低温有利于吸附，树脂对各重金属离子等温吸附在实验浓度范围内均符合Langmuir和Freundnch方程．吸附机理研究表明，巯基与重金属离子发生了离子交换和配位反应，化学吸附起支配作用。     

麦麸对重金属离子的吸附性能研究

以麦麸为天然吸附剂,从水溶液中去除重金属离子.实验表明,麦麸对重金属离子有优良的吸附性能.在约10min内达到吸附平衡,吸附容量分别为:Hg2 70mg/g、Pb2 63mg/g、Cd2 21mg/g、Cu2 15mg/g、Ni2 13mg/g及Cr3 9.3mg/g;吸附速率很快,并且对上述金属离子有良好的选择性.     

新型假冠醚聚合物的合成与对金属离子的吸附特性

新型假冠醚聚合物的合成与对金属离子的吸附特性     

壳聚糖及其衍生物对金属离子的吸附研究(上)

壳聚糖是一种天然高分子,在其分子结构的重复单元中有-NH2和-OH,因而对金属离子有较好地吸附和配位能力.本文较全面地综述了壳聚糖及其衍生物对金属离子的吸附性能,简述了它们与金属离子形成配合物的结构及吸附机理,并对其发展前景作了展望.其中上篇主要讲述了壳聚糖及其衍生物对金属离子吸附性能的研究进展.     

聚氯乙烯负载席夫碱树脂的合成及其对金属离子的吸附

聚氯乙烯负载席夫碱树脂的合成及其对金属离子的吸附刘理中，俞善信，肖立新（湖南师范大学化学系长沙４１００８１）（中南工业大学冶金化学研究所长沙）关键词聚氯乙烯，负载树脂．席夫碱，金属离子，吸附高分子负载席夫碱可用于离子吸附和催化等领域，汪信［１，２］等...     

交联壳聚糖的结构及其对不同金属离子的吸附性能

交联壳聚糖的结构及其对不同金属离子的吸附性能;交联壳聚糖;Cu2+;Co2+;Ni2+;结构;吸附性能     

不同组分下三乙烯四胺交联壳聚糖对重金属离子的吸附性能

三乙烯四胺;交联;壳聚糖;重金属离子;吸附     

金属离子交换分子筛的NO吸附性能

在固定床流动吸附装置上利用吸附一脱附法测定了各种金属离子交换分子筛上NO吸附性能．结果表明，在ZSM－5上NO的可逆吸附量（qrev）与不可逆吸附量（qiir）随交换金属离子的不同而不同．单位交换金属离子的NO可逆吸附量（qrev）与不可逆吸附量（qiir）随分子筛铝含量的减少而增加．qrev与qiir在ZSM－5分子筛上不随交换度变化，而在丝光沸石上却随交换度的变化而改变．     

STUDIES ON THE SYNTHESES AND PROPERTIES OFSNAKE-CAGE TYPE CHELATE RESINS I System of Carboxymethyl-chitosan/B-62/Triethylenetetramine

1INTRODUCTIONCarboxymethyl-chitosan(CMXTS)isakindofwatersolublelinearpolymerpreparedfromcarboxymethylationofchitosan(CTS).DuetoitsEDTA-likemolecularstructUre,ithasgoodchelatesorptionpropertiesformetalionslll.However,itiseasytorunoffinwateranddifficulttoberegenerated.Henceitmustbechemicallycross-linkedbeforebeingusedaschelateresin.Thecommonreagentsforcross-linking,suchasepichlorohydrin,chloromethylthiirane['1andpolyethyleneglycoldiglycidylether'],havedifunctionalgroups,whichreactwith'…     

STUDIES ON THE SYNTHESES AND PROPERTIES OF SNAKE—CAGE TYPE CHELATE RESINS

Using carboxymethyl chitosan(CM-CTS) as snake resin,B-62 resin crosslinked by triethylentetraamine(TETA)as cage resin,a series of novel snake-cage type resin were synthesized.Such factors as the best synthetic conditions,the swelling and regeneration properties.and the sorption capactities of the above mentioned resins for metal ions were investigated.The experimental results show these resins have good swelling properties and mechanical stability,and do not run off in organic and inorganic solvents.The sorption capactities of them for Cu^2+,Ni^2+,Zn^2+,and Pb^2+ were 0.89,0.54,0.32,and 0.22mmol/g,rspectively.     

羧甲基壳聚糖/聚乙烯醇/甘油环氧树脂蛇笼型复合螯合膜的制备及对金属离子的吸附性能

以交联甘油环氧树脂交联的聚乙烯醇(PVA)为笼树脂，羧甲基壳聚糖(CCTS)为蛇树脂制备了具有蛇笼结构的复合螯合膜，研究了其对Cu^2 、Ni^2 、Pb^2 、Fe^3 、Zn^2 ，Hg”^2 、Cd^2 等金属离子的吸附性能，研究表明，该树脂对Cu^2 、Ni^2 、Pb^2 有较好的吸附性能，其中PVA是对Cu^2 的吸附的主要贡献者，而CCTS则是在对Ni^2 的吸附中起主要作用。该树脂可以用于含Cu^2 废水的处理。     

酚醛型苯基硫脲树脂对Pt4+、Pd2+的吸附性能

螯合树脂是一类具有螯合功能基，能从含有金属离子的溶液中有选择的捕集、分离特定金属离子的功能高分子。含N、S、O配位原子的螯合树脂对贵、重金属离子有良好的吸附性能和吸附选择性。利用螯合树脂的吸附性能，     

Synthesis and application of modified poly (styrene‐alt‐maleic anhydride) networks as a nano chelating resin for uptake of heavy metal ions

A chelating resin based on modified poly (styrene‐alt‐maleic anhydride) with 3‐aminobenzoic acid was synthesized. This modified resin was further reacted by 1,2‐diaminoethane or 1,3‐diaminopropane in the presence of ultrasonic irradiation to prepare tridimensional chelating resin for the removal of heavy metal ions from aqueous solutions. The adsorption behavior of Fe(II), Cu(II), Zn(II) and Pb(II) ions was investigated by synthesized chelating resins in various pH. Among the synthesized resins, CSMA‐AB1 and CSMA‐AB2 demonstrated a high affinity for the selected metal ions compared to SMA‐AB, and the order of removal percentage changes as follow: Fe(II) > Cu(II) > Zn(II) > Pb(II). The adsorption of all metal ions in acidic medium was moderate, and it was favored at the pH value of 6 and 7. Also, the prepared resins were examined for removal of metal ions from industrial wastewater and were shown to have a very efficient adsorption in the case of Cu(II), Fe(II) and Pb(II); however, the adsorption of Zn(II) was lower than others. The resin was characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, X‐ray diffraction analysis and thermogravimetric analysis/derivative thermogravimetry. Copyright © 2012 John Wiley & Sons, Ltd.     

SYNTHESES AND ADSORPTION PROPERTIES OF PHENOL-FORMALDEHYDE-TYPE CHELATING RESINS BEARING THE FUNCTIONAL GROUP OF TARTARIC ACID

Several kinds of novel chelating resins bearing the functional group of tartaric acid (TTA-FQ-12, TTA-FQ-23, and TTA-FQ-34) were synthesized by reacting epoxy maleic anhydride, which was prepared through the oxidization reaction of maleic anhydride by hydrogen peroxide, with phenol-formaldehyde resin containing polyamine (FQ resins series). The effects of such factors as reaction time, reaction temperature and pH value on the loading capacity of TTA in resins were investigated. The results showed that the optimum reaction conditions are as follows: time 9-12h; temperature 90-105℃;pH value 6-10. The loading capacities of TTA can reach 0.15, 0.14, and 0.11 mmol/g^-1 when the functional group of FQ resin was -OCH2CH2NHC2H4NH2, -O(CH2CH2NH)2C2H4NH2 and -O(CH2CH2NH)3C2H4NH2), respectively. The structures of resins were characterized by FTIR spectra. The primary study on the adsorption properties of the resins for metal ions showed that there are two kinds of adsorption mechanisms i.e. ion exchange and chelate in the adsorption process. TTA-FQ resins have much higher adsorption selectivity for Pb^2 and Zn^2 than for Cu^2 and Ni^2 . These resins can probably be used for separating Pb^2 or Zn^2 in the mixture of metal ions or for treating wastewater containing heavy metal ions.     

蛇笼型螯合树脂的合成及性能研究Ⅱ·CMC/B-62/TETA体系

以羧甲基纤维素（ＣＭＣ）、甘油环氧树脂（Ｂ－６２）及三乙烯四胺（ＴＥＴＡ）为基本原料,经脱水交联合成了一种ＣＭＣ的蛇／ＴＥＴＡ交联Ｂ－６２树脂为笼的新型弱酸弱碱型蛇笼树脂。研究了该树脂在不同溶剂中的溶胀性能及对Ｃｕ＾２＋、Ｎｉ＾２＋、Ｐｂ＾２＋的吸附量、吸附动力学、等温吸附过程等静态吸附。同时研究了ｐＨ值等因素对吸附性能的影响。实验结果表明,该树脂在所有溶剂中只溶胀而不流失;其对上述三种金属离子的     

螯合树脂研究——Ⅷ.以聚硫醚为主链的氧杂多乙烯多胺型螯合树脂的合成及其吸附性能

由聚[2′-氯乙基-2,3-环硫丙基醚]和多乙烯声胺反应,合成了四种以聚硫醚为主链的氧杂多乙烯多胺型螯合树脂,它们对贵金属离子Au(Ⅲ)、Pd(Ⅱ)、Pt(Ⅳ)、Ag~+等具有优良的吸附性能。     

珠状酚醛系氨基膦酸树脂的制备及其螯合性能

本文采用反相县浮聚合技术,以苯酚、甲醛、乙二胺为起始原料,一步反应制得珠状凝胶型、大孔型胺基树脂,进一步膦酸化后得到珠状氨基膦酸螯合树脂,小球表面光滑,颗粒均匀,对Ｃａ＾２＋和Ｃｕ＾２＋螯合容量分别达到１．３６ｍｍｏｌ／ｇ和２．３１ｍｍｏｌ／ｇ。氨基膦酸树脂对Ｃａ＾２＋的吸附可用Ｆｒｅｕｎｄｌｉｃｈ吸附等温式加以描述,Ｆｒｅｕｎｄｌｉｃｈ参数ｎ＝１．７６９,线性回归方程相关系数γ＝０．９９５８。     

Zn2＋型磺酸树脂对维生素B12的配位吸附及洗脱性能

原位吸附;分离;Zn2＋型磺酸树脂对维生素B12的配位吸附及洗脱性能