Abstract
Prolonged heat treatment of highly siliceous, template-free ZSM-5 containing Na+ or K+ causes improvement of the lattice structure, migration of alkaline ions to the outer layers of the zeolite particles as shown by XPS and an increased isolation of = Si–ONa sites from = Si–OH sites, as shown by 29Si CP MAS NMR analyses of silylated products
Original language | English |
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Pages (from-to) | 1523-1526 |
Journal | Chemistry Letters |
Volume | 15 |
Issue number | 9 |
DOIs | |
Publication status | Published - 1986 |