浏览全部资源
扫码关注微信
纸质出版日期:2003-2-20,
扫 描 看 全 文
李家政, 史作清, 范云鸽. 非水体系中磺酸铜型树脂对有机碱的配位吸附[J]. 高分子学报, 2003,(1):39-43.
LI Jiazheng, SHI Zuoqing, FAN Yunge. COORDINATION SORPTION OF AMINES ON SULPHONIC RESIN IN Cu2+ FORM FROM NONAQUEOUS SYSTEM[J]. Acta Polymerica Sinica, 2003,(1):39-43.
研究了磺酸铜型树脂在乙醇、乙酸乙酯和正己烷中对苯胺、N-甲基苯胺和N
N-二甲基苯胺的吸附规律
并与水中的结果相对照 .树脂在正己烷中对苯胺等的吸附量最大
在乙醇、乙酸乙脂和水中依次减小 .在4种不同的介质中
树脂对苯胺的吸附均表现出相同的吸附选择性
即对苯胺的吸附亲合性最大
N
N-二甲基苯胺最小 .在不同的介质中
树脂对苯胺的吸附基本符合Freundlich吸附方程
并计算了在不同介质中对苯胺吸附的吸附焓 .在水中
吸附速率最高
在乙醇、乙酸乙酯和正己烷中
吸附速率依次降低.
Some of the natural products are water unsolvable.For such products
it’s better that the sorption should be carried out in nonaqueous system.But common sorption resins are not effective in nonaqueous system
the simple reason for which is that the sorption on common resins is mainly based on the hydrophobic interaction between the resins and the adsorbate.So it is practically important to exploit resins which fit the nonaqueous system and study their sorption behavior.In this paper
a serious of coordination sorption resins have been prepared by loading different transition metal ions on the macroporous sulphonic resin
and the sorption of aniline
N-methyl aniline and N
N-dimethyl aniline on sulphonic resin in Cu2+ form from ethanol
ethyl acetate and bexane has been studied and compared with that from water. The sulphonic resin in Cu2+ form has the highest sorption capacity from hexane
and has lower sorption capacities from ethanol
ethyl acetate and water sequentially.In all the media
the resin shows the highest sorption affinity for aniline
moderate for N-methylaniline and the lowest for N
N-dimethylaniline. The different sorption affinities for the three anilines are attributed to the different steric hindrance of different anilines coordinating to Cu2+ on the resin.The sorptive isotherms of the anilines from different media fit the Freundlich equation
and the sorption enthalpies have been calculated.The sorption enthalpies of aniline from water and ethanol are higher
but nearly zero from ethyl acetate and hexane. The difference of sorption enthalpies from different media is attributed to the coordination of water to Cu2+ on the resin and the different swelling ratio in various media.The sorption rate of the anilines from water is the highest and decreases from ethanol
ethyl acetate and hexane sequentially.The different sorption rates are also attributed to the different swelling ratio in different media.All these conclusions will be useful for applying the coordination resin to the sorptive separation of some water unsolvable natural products.
配位吸附吸附选择性苯胺吸附焓
0
浏览量
8
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构