SYNTHESIS AND ADSORPTION PROPERTIES OF CHELATING RESINS CONTAING AZA-AND THIO-AZACROWN ETHERS STRUCTURE

XU Yuwu; GAO Feng; DONG Shihua

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SYNTHESIS AND ADSORPTION PROPERTIES OF CHELATING RESINS CONTAING AZA-AND THIO-AZACROWN ETHERS STRUCTURE

Research Article | 更新时间：2021-03-19

- SYNTHESIS AND ADSORPTION PROPERTIES OF CHELATING RESINS CONTAING AZA-AND THIO-AZACROWN ETHERS STRUCTURE
- Acta Polymerica Sinica Issue 1, Pages: 28-34(1996)
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- Published：20 February 1996，
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XU Yuwu, GAO Feng, DONG Shihua. SYNTHESIS AND ADSORPTION PROPERTIES OF CHELATING RESINS CONTAING AZA-AND THIO-AZACROWN ETHERS STRUCTURE. [J]. Acta Polymerica Sinica (1):28-34(1996)
DOI：

XU Yuwu, GAO Feng, DONG Shihua. SYNTHESIS AND ADSORPTION PROPERTIES OF CHELATING RESINS CONTAING AZA-AND THIO-AZACROWN ETHERS STRUCTURE. [J]. Acta Polymerica Sinica (1):28-34(1996) DOI：

摘要

环硫（氧）氯丙烷

不经过预先聚合

直接与三（二）乙醇胶的钠盐进行反应

制得交联的硫、氮杂冠醚型螫合树脂．提出了可能的反应机理．还研究了这类树脂对一些贵金属和非贵金属离子的吸附性能．比较了相应的含硫、氮和氧氮树脂吸附性能的差别．总的说来合硫氮的树脂对贵金属的吸附性能优于含氧、氮树脂．

Abstract

Four crosslinked resins containing aza-or thio-azacrown ether structure were.synthesized by the reaction of chloromethylthiirane(MS)[or chloromethyloxirane(MO)]with triethylolamine(N)and diethyloldmine(NH) respectively in the presence of NaH using dioxane as solvent at the temperature of 50-80℃.The possible mechanism is that the monomer MS(or MO) is carried out anionic ring-opening polymerization bythe initiation of-O-Na+(or=N-Na+) to form linear polymer at first and then the further reaction of elimination of NaCl between the macromolecules and sodium salt of N(or NH)gives the crosslinked resin at last.The order of adsorption capacities of resins for noble metals is Au(Ⅲ)(2.5～4.4mmol/g)

Pd(Ⅱ)(1.3～2.9mmol/g)

Pt(Ⅳ)(0.56～0.76mmol/g).The adsorption capacities of resins containing S and N (MSN

MSNH)for Ag+are much higher (6.6～6.7mmol/g)than those of the resine containing N(1.0～2.5mmol/g).The adsorption percentages of MSN and MSNH for Au(Ⅲ)

Pd(Ⅱ)

Pt(Ⅳ)in low concentration(20～50μg/ml)are also higher (94～99%)than those of the resins of MON and MONH (10～92%) .

关键词

螯合树脂硫氮杂冠醚贵金属吸附性能

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