摘要
用环硫氯丙烷分别与硫脲、氨基硫脲、对－亚苯基双硫脲和间－亚苯基双硫脲反应合成了四种新的硫脲型螯合树脂．由于硫脲及其衍生物分子中的硫酰氨基碱性较弱，上述反应要在较高温度下（８０～１００℃）才能顺利进行．研究了这类树脂对贵金属的吸附性能．它们对金、银的吸附容量比对钯、铂的高些，双硫脲型树脂的吸附能力又比单硫脲型树脂强些．Ｘ－光电子能谱的研究表明：此类硫脲型树脂吸附金时。
Four new chelating resins(PSN1 4)containing mercapto and thiourea
groups were synthesized by reaction of chloromethylthiirane (S) with thiourea (N1),
aminothiourea (N2), p phenylenedithiourea (N3) and m phenylenedithiourea
(N4)respectively.The adsorption capacities of all the four resins for Au(Ⅲ) and Ag(Ⅰ) were
higher than those for Pd(Ⅱ) and Pt(Ⅳ) But the capacities of PSN3 and PSN4 for Ag (Ⅰ) and
Au(Ⅲ) were higher than those of the PSN1 and PSN2.X ray photoelectron spectroscopy studies
of resins(PSN1 2) and their metal [Au(Ⅲ)]chelates were made. The results showed that the
adsorption of is belong to a chemical adsorption. During the adsorpton, the metal ions
[Au(Ⅲ)]are electron acceptors while the co ordinate atoms S and N are electron donors.
出处
《武汉大学学报（自然科学版）》
CSCD
1999年第2期129-134,共6页
Journal of Wuhan University(Natural Science Edition)
基金
国家自然科学基金
关键词
硫脲型树脂
X-光电子能谱
螯合树脂
合成
thiourea resin
adsorption
noble metal
X ray photoelectron spectroscopy
