Thermoanalytical studies of water on aluminum oxides with different porosities

Autor:	Mietek Jaroniec, P. Staszczuk, R.K. Gilpin
Rok vydání:	1992
Předmět:	Aluminium oxides Thermogravimetric analysis Chemistry Inorganic chemistry Evaporation Thermal desorption Analytical chemistry Active surface Biochemistry Analytical Chemistry Thermogravimetry Desorption Environmental Chemistry Porosity Spectroscopy
Zdroj:	Analytica Chimica Acta. 269:157-165
ISSN:	0003-2670
DOI:	10.1016/0003-2670(92)85146-w
Popis:	The thermal desorption of water from five aluminum oxide samples with different porosities and specific surface areas was studied under dynamic and quasi-isothermal conditions. The thermogravimetric (TG) curves obtained show multi-step weight losses associated with the initial evaporation of excess water, the removal of the water retained in small pores and the desorption of physisorbed and chemisorbed water from active 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 porosities of the samples studied.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ee8fcf3e46e33c8d2b59457ddd0cc22d https://doi.org/10.1016/0003-2670(92)85146-w Zobrazit plný text záznamu