EVALUATION OF THE RELATIVE ACID STRENGTH OF CERIUM AND CALCIUM EXCHANGED Y-ZEOLITE BY TG AND DSC

Authors
ARAUJO AS FERNANDES VJ GIOLITO I ZINNER LB
Citation
As. Araujo et al., EVALUATION OF THE RELATIVE ACID STRENGTH OF CERIUM AND CALCIUM EXCHANGED Y-ZEOLITE BY TG AND DSC, Thermochimica acta, 223, 1993, pp. 129-134
Citations number
15
Categorie Soggetti
Chemistry Analytical
Journal title
Thermochimica acta → ACNP
ISSN journal
00406031
Volume
223
Year of publication
1993
Pages
129 - 134
Database
ISI
SICI code
0040-6031(1993)223:<129:EOTRAS>2.0.ZU;2-W
Abstract
The relative acid strength of cerium and calcium Y zeolite was evaluat ed by thermogravimetry (TG) and differential scanning calorimetry (DSC ) methods, using n-butylamine as a molecular probe. The total acidity was calculated from TG curves whereas the relative acid strength given in J per acid site was determined by the DSC curves, using the Borcha rdt-Daniels kinetic model. The enthalpies of these processes are propo rtional to the acid-site strength in each specific temperature range.