沸石吸附分离2,6-二甲酚/甲酚混合物

Separations Technology Pub Date : 1995-05-01 DOI:10.1016/0956-9618(95)00110-R

Arunabha Raychoudhuri, Vilas G. Gaikar

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引用次数: 10

摘要

用NaX沸石对对甲酚/2,6-二甲酚和间甲酚/2,6-二甲酚等接近沸点的烷基酚混合物进行了分离。研究了阳离子对选择性的影响。NaX分子筛选择性吸附2,6-二甲酚混合物中的对甲酚和间甲酚，而CaX和BaX分子筛优先吸附2,6-二甲酚。选择性似乎是由沸石骨架中的扩散决定的。

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Adsorptive separations of 2,6-xylenol/cresol mixtures with zeolites

Separation of close boiling point mixtures of alkylphenols, such as p-cresol/2,6-xylenol, and m-cresol/ 2,6-xylenol has been attempted using NaX zeolites. Effect of the cation on the selectivity has also been investigated. The NaX zeolite adsorbs p-cresol and m-cresol selectively from their mixtures with 2,6-xylenol, while CaX and BaX zeolites preferentially adsorb 2,6-xylenol. The selectivity seems to be decided by the diffusion in the zeolite framework.

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Separations Technology

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