The model-like adsorption properties of MFI-type zeolites with different degrees of hydrophobicity and charge compensating cations were investigated for the removal of pcresol from different aqueous solutions at 37°C. Pure silica MFI and alumino-silicate MFI (Si/Al = 30.4), with H+, Na+, K+ and Mg2+ as charge compensating cations were used for the study. Adsorption isotherms and microcalorimetric measurements show a strong affinity of pcresol towards all MFI type zeolites. This strong affinity is still present in physiological serum solution containing urea molecules. The effect of the nature of the charge compensating cation and present water molecules on p-cresol affinity is discussed together with spectroscopic results and Monte-Carlo simulations of the adsorption process.
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机译：研究了具有不同程度疏水性和电荷补偿阳离子的MFI型沸石在模型上的吸附特性，用于在37°C下从不同的水溶液中去除去甲酚。本研究使用具有H +，Na +，K +和Mg2 +作为电荷补偿阳离子的纯二氧化硅MFI和铝硅酸盐MFI（Si / Al = 30.4）。吸附等温线和微量热法测量表明，对甲基异戊二烯对所有MFI型沸石都有很强的亲和力。这种强亲和力仍然存在于含有尿素分子的生理血清溶液中。讨论了电荷补偿阳离子和现有水分子的性质对对甲酚亲和力的影响，并讨论了光谱结果和吸附过程的蒙特卡洛模拟。
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