Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 49: Issue 2
Heats of chemisorption ofn-Aliphatic alcohols on α-Al2O3 at 25–200°C
A thermokinetic study
Author:
P. Rossi Istituto di Chimica (ICFAM), Facoltà di Ingegneria, Università di Genova, Fiera del Mare, Pad. D. Piazzale J. F. Kennedy, 16129 Genova, Italy

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Pages:
627–634
Online Publication Date:
05 Aug 2005
Publication Date:
01 Aug 1997
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf01996745
Keywords:
adsorption ofn-aliphatic alcohols on alumina; microcalorimetry; thermokinetic investigation
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Abstract  

A differential microcalorimeter (E. Calvet) was used to study the processes of adsorption of five aliphatic alcohols (C1-C5) on α-Al2O3 at 25, 50, 100, 150 and 200°C. In particular, the importance of the thermokinetic study of the chemisorption of such alcohols at different experimental temperatures was demonstrated, with regard to the variations in the thermokinetic parameters (tmax, t1/2 and t0) and the evolution of the alcohol vapor pressure on the adsorbent during the adsorption process. It was concluded that: a)  all the heat emission peaks of alcohol adsorption have the same rounded shape at 25°C; b)  on passing from methanol to 1-pentanol, the area of the adsorption peaks increases as the chain length or molecular weight increases; c)  on passing from 25 to 200°C, the shape of the adsorption peaks becomes more pointed.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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