ISSN:
1588-2837
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Hydroxyaluminium and hydroxychromium pillared montmorillonites were prepared by intercalation and subsequent calcination of Ca-montmorillonite separated from Jelšový Potok bentonite (Central Slovakia). Ca-montmorillonite and pillared clays were studied by thermal and X-ray diffraction methods. Nitrogen adsorption-absorption data were used to determine pore size distribution, specific surface area, volume of micropores and surface of mesopores. Isomerization of o-xylene to p- and m-xylene, and o-xylene disproportionation were used to test the catalytic activity of investigated materials. The measurements showed increasing catalytic activity in the order Ca-montmorillonite〈chromium pillared montmorillonite〈aluminium pillared montmorillonite. The results confirmed that increasing surface area had a positive effect on the conversion and disproportionation of o-xylene.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02071185
