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Thermoanalytical studies of water on aluminum oxides with different porosities

✍ Scribed by P. Staszczuk; M. Jaroniec; R.K. Gilpin

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 659 KB
Volume: 269
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(92)85146-w

No coin nor oath required. For personal study only.

✦ Synopsis

The thermal desorptlon of water from five alummum oxide samples with different porosltles and speclflc surface areas was studied under dynamic and quast-Isothermal condltlons The thermogravlmetrlc (TG) curves obtained show multi-step weight losses assoclated with the mltlal evaporation of excess water, the removal of the water retained m small pores and the desorptlon of physlsorbed and chemisorbed water from actlve surface sites with different energies Further, It appears that the weight losses at the inflection points of the TG curves can be correlated with the surface free energies and porosltles of the samples studied Keywords Thermometnc methods, Alumma, Waters

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