IONIC EXCHANGE ON NAX SYNTHETIC ZEOLITES IN THE PRESENCE OF SURFACTANTS

被引:0
|
作者
VASILE, A
POPA, A
CRUCEANU, M
BOLD, A
POPOVICI, E
机构
来源
REVISTA DE CHIMIE | 1993年 / 44卷 / 06期
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中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The paper presents the results of a detailed study upon the equilibrium and kinetics of the Ca2+ and Mg2+ ion exchange on NaX zeolite, in the presence of lineary alkylbenzene sodium sulphonate (LABS) and nonylphenylethoxylate (NF8). The experimental exchange isotherms showed that under the considered working conditions, the Ca2+ and Mg2+ equilibrium is not influenced by the neutral or anionic surfactants presence. In as far as the exchange rate is concerned, a decrease as compared to the witness sample - but a differentiated one - is observed for both cations. The Ca2+ ion exchange rate is diminished mom by the NF8, while the one of the Mg2+ ion is decreased more by the LABS. The surfactants presence in the system leads to a slight decrease of the exchange activation energy, this being an argument for the good washing behaviour of the detergents formulated with zeolites.
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页码:552 / 557
页数:6
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