TPD of cyclic hydrocarbons in silicalite-1 studied by intelligent gravimetry

Temperature-programmed desorption (TPD) of cyclopentane, benzene and cyclohexane in silicalite-1 from room temperature to 400 °C at different loading has been investigated by intelligent gravimetry. TPD of cyclopentane and benzene at different heating rates (5, 10, 15 and 20 °C/min) has also been st...

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Bibliographic Details
Published in:Thermochimica acta 2005-12, Vol.439 (1), p.121-126
Main Authors: Ban, Hongyan, Gui, Jianzhou, Zhang, Xiaotong, Dai, Min, Song, Lijuan, Sun, Zhaolin, Rees, Lovat V.C.
Format: Article
Language:English
Subjects:
Chemistry
Desorption
Exact sciences and technology
General and physical chemistry
Ion-exchange
Silicalite-1
Surface physical chemistry
Thermogravimetry
TPD
Zeolites: preparations and properties
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Summary:Temperature-programmed desorption (TPD) of cyclopentane, benzene and cyclohexane in silicalite-1 from room temperature to 400 °C at different loading has been investigated by intelligent gravimetry. TPD of cyclopentane and benzene at different heating rates (5, 10, 15 and 20 °C/min) has also been studied. There are two different peaks in cyclopentane and benzene TPD profiles at loading over four molecules per unit cell. Only one peak appears at loading lower than (or equal to) four molecules per unit cell in cyclopentane and benzene TPD profiles and in cyclohexane TPD profiles. The maximum desorption peak temperature increases with the increasing of initial adsorbate loading.
ISSN:0040-6031
1872-762X
DOI:10.1016/j.tca.2004.08.017