Untersuchungen an oxidischen Katalysatoren. XLVI. Synthetische Boroalumosilicate mit Pentasilstruktur (SABO): Strukturelle,oberflächenchemische und katalytische Eigenschaften |
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Authors: | B Unger K-P Wendlandt H Bremer W Reschetilowski D Freude P Kraak |
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Abstract: | Studies on Oxide Catalysts. XLVI. Synthetic Boroaluminosilicates with Pentasil Structure (SABO): Structural, Surface Chemical, and Catalytical Properties A remarkable modification of ZSM-5 type zeolites is possible by isomorphous substitution of silicon and/or aluminium by boron. In the H-forms of these SABO zeolites the boron atoms mainly exist in a trigonal lattice oxygen environment and hence they are not envolved in the formation of Broensted acid sites. Consequences of incorporated boron for catalytic reactions result from a decrease in the strength of existing Broensted sites as well as from a partial lattice contraction. |
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