THERMOGRAVIMETRIC STUDIES ON TEMPERATURE-PROGRAMMED DESORPTION OF PROBE MOLECULES FROM DEALUMINATED CLINOPTILOLITE

Authors
GREJTAK F KRAJCOVIC J KOMADEL P
Citation
F. Grejtak et al., THERMOGRAVIMETRIC STUDIES ON TEMPERATURE-PROGRAMMED DESORPTION OF PROBE MOLECULES FROM DEALUMINATED CLINOPTILOLITE, Thermochimica acta, 264, 1995, pp. 193-203
Citations number
15
Categorie Soggetti
Chemistry Analytical
Journal title
Thermochimica acta → ACNP
ISSN journal
00406031
Volume
264
Year of publication
1995
Pages
193 - 203
Database
ISI
SICI code
0040-6031(1995)264:<193:TSOTDO>2.0.ZU;2-M
Abstract
Clinoptilorite was dealuminated by (NH4)(2)SiF6 solution. Three, four and five acid site types were determined by TPD of ammonia, pyridine a nd n-butylamine, respectively. Dealumination increased the relative am ount of weak acid sites. Extraframework aluminium remained in the reac tion product and lowered the accessibility of the strong acid sites.