Acidity of montmorillonite pillared by alumina, zirconia and chromia |
| |
| Authors: | Jozef Kraj&# ovi&# , Pavol Hudec, Agáta Smie&# ková, Zdeno &# idek, Mária Kubranová Ivan Horváth |
| |
| Affiliation: | (1) Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská 9, 842 36 Bratislava, Slovak Republic;(2) Department of Petroleum, Faculty of Chemical Technology, Slovak Technical University, Radlinského 9, 812 37 Bratislava, Slovak Republic |
| |
| Abstract: | Acidic properties of Al-, Zr- and Cr- pillared montmorillonites prepared from Jelšovy Potok bentonite (Central Slovakia) have been investigated using temperature-programmed desorption of ammonia. The number of acid sites varied with different interlayer cations from 0.06 to 0.23 mmol g−1. The character of acid sites was similar in the case of Al- and Zr- forms. It is obvious that the chromium analogue contains fewer acid sites, nevertheless, they seem to be stronger compared to Al- and Zr- pillared montmorillonites. |
| |
| Keywords: | montmorillonite (pillared) acidity intercalation temperature-programmed desorption |
| 本文献已被 SpringerLink 等数据库收录！ |
|
