Sorption of Normal Paraffins by Molecular Sieves Type 5A.
Sorption of Normal Paraffins by Molecular Sieves Type 5A.
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DOI：
10.1021/je60015a043
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发表时间：
1962-10
影响因子：
--
通讯作者：
D. Peterson;O. Redlich
中科院分区：
文献类型：
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作者：
D. Peterson;O. Redlich
IVLOLECULAR SIEVERS为分离提供了极好的机会，否则很难实现。特别是，正链烷烃的分离-石油化学中的一个经典问题-可以非常有效地进行分子筛类型5A。与尿素络合物分离的相似性是显而易见的。这两种分离方法在技术应用中的一些重要细节上也有相似之处：所需试剂量高，试剂再生相当复杂。随着分子筛用途的进一步发展，需要一套广泛的相关数据。本工作的目的，像以前的尿素络合物（15）的研究，是一个系统的描述吸附的正构烷烃作为温度，浓度和分子大小的函数。合理的完整性被认为比高精度更重要。对于实验结果的表示、插值和有限的外推，最近提出的吸附等温线（16）比以前提出的关系式更有用。由此得出了一些关于分子筛吸附机理的粗略结论。与Brunauer、Emmett和Teller的多层吸附理论进行比较，发现了一些有趣的信息。
IVloLECULAR SIEVES offer excellent opportunities for separations which are otherwise difficult to achieve. Particularly, the isolation of normal paraffins—a classical problem in petroleum chemistry—can be very efficiently carried out by Molecular Sieves Type 5A. The similarity to separations by complexes with urea is obvious. The two separation methods are similar also in some details important in techni-cal applications: The amount of reagent required is high, and the regeneration of thereagent is rather complicated. The further development of uses for Molecular Sieves makes desirable an extensive set of pertinent data. The object of the present work, like that of a previous investigation of urea complexes (15), was a systematic description of the sorption of normal paraffins as a function of temperature, concentration, and molecular size. Reasonable completeness was considered to be more important than high accuracy.For the representation, interpolation, and limited extrapolation of the experimental results a recently pro-posed sorption isotherm (16) has been found more useful than previously suggested relations. It leads to some crude conclusions concerning the mechanism of sorption in Molecular Sieves. A comparison with the theory ofmulti-layer sorption of Brunauer, Emmett, and Teller furnishes interesting information.