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不对称二烷基硫醚的合成及其对Au(Ⅲ),Pd(Ⅱ)的萃取性能研究 被引量:5
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作者 张邦劳 《陕西师大学报(自然科学版)》 CSCD 北大核心 1997年第1期67-69,72,共4页
合成了八种不对称二烷基硫醚和两种对称二烷基硫醚.测定了它们的沸点及收率,研究了其对Au(Ⅲ),Pd(Ⅱ)的萃取性能,并与两种对称二烷基硫醚作了比较.结果表明,不对称二烷基硫醚不但有对称二烷基硫醚对Au(Ⅲ),Pd(Ⅱ... 合成了八种不对称二烷基硫醚和两种对称二烷基硫醚.测定了它们的沸点及收率,研究了其对Au(Ⅲ),Pd(Ⅱ)的萃取性能,并与两种对称二烷基硫醚作了比较.结果表明,不对称二烷基硫醚不但有对称二烷基硫醚对Au(Ⅲ),Pd(Ⅱ)高萃取率的优点,且具有明显的结构效应,其结构效应在Pd(Ⅱ)的萃取中比在Au(Ⅲ)中明显.硫醚的烷基支链化对Pd(Ⅱ)萃取的影响大于Au(Ⅲ). 展开更多
关键词 溶剂萃取 二烷基硫醚 合成 萃取
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新型抗氧增效剂——二烷基硫醚
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作者 迪扎.布雷克斯莫热 阎继周 《国外塑料》 1990年第4期41-43,共3页
二烷基硫醚(bisalkyl sulfide),系一种新型的抗氧增效剂,可改善聚合物在长期高温下的热稳定性.在加工过程中,可使聚合物耐热降解。它的非极性质可提高树脂的相容性和耐湿性.
关键词 二烷基硫醚 抗氧增效剂 聚合物
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二烷基二硫醚用途及合成方法研究进展
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作者 徐朝阳 张紫涵 +1 位作者 王锐 姜恒 《化工科技》 CAS 2023年第6期91-99,共9页
二硫醚广泛应用于从生物化学到不同工业重要聚合物的各个领域,也是用于其他精细化学品的合成中间体。寻找和开发高效、温和、环保且廉价的有机二硫化物制备方法,对有机官能团转化具有重要意义。硫醇的氧化偶联是制备二硫醚的最佳和最简... 二硫醚广泛应用于从生物化学到不同工业重要聚合物的各个领域,也是用于其他精细化学品的合成中间体。寻找和开发高效、温和、环保且廉价的有机二硫化物制备方法,对有机官能团转化具有重要意义。硫醇的氧化偶联是制备二硫醚的最佳和最简单的途径。与二芳基二硫醚相比,有关二烷基二硫醚的研究报道相对较少,因此,本文重点关注二烷基二硫醚合成方法,特别是近十年来的反应,从催化或非催化硫醇与分子氧氧化、化学计量合成、电化学氧化及以硫磺作为氧化剂的氧化偶联5个方面综述了各自的合成反应机理、优点和局限性,以期促进该领域的进一步发展。 展开更多
关键词 烷基 合成 生物活性 氧化偶联
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Selective flotation of smithsonite, quartz and calcite using alkyl diamine ether as collector 被引量:7
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作者 Hai-ling ZHU Wen-qing QIN +4 位作者 Chen CHEN Li-yuan CHAI Lai-shun LI San-jun LIU Ting ZHANG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2018年第1期163-168,共6页
The flotation separation of smithsonite from calcite and quartz using a alkyl diamine ether(GE-609)as the collector was investigated through micro-flotation experiments and the real ore flotation experiments.The resul... The flotation separation of smithsonite from calcite and quartz using a alkyl diamine ether(GE-609)as the collector was investigated through micro-flotation experiments and the real ore flotation experiments.The results show that GE-609exhibits good collecting capability to three minerals without selectivity.The presence of sodium sulfide enhances the flotation of smithsonite and calcite while inhibits quartz.Moreover,both sodium silicate and sodium hexametaphosphate exhibit good selective inhibition to calcite.The real ore test results show that a zinc concentrate containing23.51%Zn with the recovery of71.02%is obtained in the closed-circuit test.To understand the adsorption of GE-609on smithsonite surface,zeta potential measurement and FTIR analysis were carried out,and the results indicate that the collector GE-609can adsorb on smithsonite surface through both electrostatic adsorption and chemical adsorption,and the presence of sodium sulfide enhances the adsorption of GE-609. 展开更多
关键词 SMITHSONITE QUARTZ CALCITE alkyl diamine ether sodium sulfide sulphidization flotation
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Separation of Sulfur/Gasoline Mixture with Polydimethylsiloxane/ Polyetherimide Composite Membranes by Pervaporatlon 被引量:5
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作者 赵长伟 李继定 +2 位作者 陈剑 亓荣彬 栾兆坤 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2009年第4期707-710,共4页
Worldwide environment has resulted in a limit on the sulfur content of gasoline.It is urgent to investigate the desulfurization of gasoline.The polydimethylsiloxane(PDMS)/polyetherimide(PEI)composite membranes were pr... Worldwide environment has resulted in a limit on the sulfur content of gasoline.It is urgent to investigate the desulfurization of gasoline.The polydimethylsiloxane(PDMS)/polyetherimide(PEI)composite membranes were prepared by casting a PDMS solution onto porous PEI substrates and characterized by scanning electron microscope(SEM).The membranes were used for sulfur removal from gasoline by pervaporation.The effects of feed temperature,sulfur content in the feed and PDMS layer thickness on membrane performance were investigated,and an activation energy of permeation was obtained.Experimental results indicated that higher feed temperature yielded higher total flux and lower sulfur enrichment factor.The total flux varied little with the increase of sulfur content in the feed,but the sulfur enrichment factor first increased with the amount of thiophene added into the gasoline,and then the variation was little.The increase of PDMS layer thickness resulted in a smaller flux but a larger sulfur enrichment factor.The result indicates that the PDMS/PEI composite membranes are promising for desulfurization by pervaporation. 展开更多
关键词 polydimethylsiloxane (PDMS)/polyetherimide (PEI) composite membranes sulfur removal GASOLINE PERVAPORATION
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STUDIES ON SYNTHESIS AND PROPERTIES OF BIS(β-ALKOXYCARBONYALKYL)TIN POLYTHIOETHERS
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作者 Che Rongrui Wei Rongbao +1 位作者 LiangYa Wu Jinguo 《Chinese Journal of Reactive Polymers》 1994年第1期74-80,共7页
Bib(β--alkoxycarbonylalkyl)tin dichlorides were interfacial condensed with organic dithio--alcohols to give a series of new organo--tin polymers. Experimental parameters were discussed. The polymers synthesized were ... Bib(β--alkoxycarbonylalkyl)tin dichlorides were interfacial condensed with organic dithio--alcohols to give a series of new organo--tin polymers. Experimental parameters were discussed. The polymers synthesized were tested for their effect on the heat--stabilization of PVC resins. The results are of interest in this area of application 展开更多
关键词 Insterfacial condensation TG / DTG PVC heat--stabilizer Organo--tin polythioethers
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