Alkane sorption on siliceous and aluminophosphate molecular sieves. A comparative study

F. Eder; J. A. Lercher

doi:10.1021/jp961953f

Alkane sorption on siliceous and aluminophosphate molecular sieves. A comparative study

F. Eder, J. A. Lercher

University of Twente

Research output: Contribution to journal › Review article › peer-review

38 Scopus citations

Abstract

The sorption of alkanes on AlPO₄-11 (AEL) and AlPO₄-5 and its all-silica analogue SSZ-24 (AFI) was studied by means of combined gravimetry and calorimetry and compared to the sorption on silicalite and highly siliceous faujasite. The heats of adsorption of all the alkanes investigated are identical on the isostructural aluminophosphate and the all-silica samples of AFI, both showing some contribution of intermolecular interactions of the sorbate. This suggests that the sorption of alkanes is mainly governed by the microporous structure and that the chemical composition has only a minor impact. As with acidic samples the sorption enthalpy increases with decreasing pore diameter and with increasing framework density for all-silica and aluminophosphate-based molecular sieves.

Original language	English
Pages (from-to)	16460-16462
Number of pages	3
Journal	Journal of Physical Chemistry
Volume	100
Issue number	41
DOIs	https://doi.org/10.1021/jp961953f
State	Published - 10 Oct 1996
Externally published	Yes

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title = "Alkane sorption on siliceous and aluminophosphate molecular sieves. A comparative study",

abstract = "The sorption of alkanes on AlPO4-11 (AEL) and AlPO4-5 and its all-silica analogue SSZ-24 (AFI) was studied by means of combined gravimetry and calorimetry and compared to the sorption on silicalite and highly siliceous faujasite. The heats of adsorption of all the alkanes investigated are identical on the isostructural aluminophosphate and the all-silica samples of AFI, both showing some contribution of intermolecular interactions of the sorbate. This suggests that the sorption of alkanes is mainly governed by the microporous structure and that the chemical composition has only a minor impact. As with acidic samples the sorption enthalpy increases with decreasing pore diameter and with increasing framework density for all-silica and aluminophosphate-based molecular sieves.",

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year = "1996",

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AU - Eder, F.

AU - Lercher, J. A.

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N2 - The sorption of alkanes on AlPO4-11 (AEL) and AlPO4-5 and its all-silica analogue SSZ-24 (AFI) was studied by means of combined gravimetry and calorimetry and compared to the sorption on silicalite and highly siliceous faujasite. The heats of adsorption of all the alkanes investigated are identical on the isostructural aluminophosphate and the all-silica samples of AFI, both showing some contribution of intermolecular interactions of the sorbate. This suggests that the sorption of alkanes is mainly governed by the microporous structure and that the chemical composition has only a minor impact. As with acidic samples the sorption enthalpy increases with decreasing pore diameter and with increasing framework density for all-silica and aluminophosphate-based molecular sieves.

AB - The sorption of alkanes on AlPO4-11 (AEL) and AlPO4-5 and its all-silica analogue SSZ-24 (AFI) was studied by means of combined gravimetry and calorimetry and compared to the sorption on silicalite and highly siliceous faujasite. The heats of adsorption of all the alkanes investigated are identical on the isostructural aluminophosphate and the all-silica samples of AFI, both showing some contribution of intermolecular interactions of the sorbate. This suggests that the sorption of alkanes is mainly governed by the microporous structure and that the chemical composition has only a minor impact. As with acidic samples the sorption enthalpy increases with decreasing pore diameter and with increasing framework density for all-silica and aluminophosphate-based molecular sieves.

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ER -

Alkane sorption on siliceous and aluminophosphate molecular sieves. A comparative study

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