Zeolite-l catalyst preparation method
Abstract
Abstract A LOW ALKALI CONTENT CRYYSTALLINE ALUMINO-SILICATE L-ZEROLITE CATALYST IIS PREPARED BY (A) SELECTING A HIGH SILICAALUMINA CONTENT L-ZEOLITE (SILA1>3); (B) CONTACTING THE ZEOLITE WITH AN AQUEOUS SOLUTION OF AN AMMONIUM SALT, 8C) CALCINING AT A TEMPERATURE BELOW ABOUT 600* C., (B) CONTACTING THE CALCINED ZEOLITE WITH AN AQUEOUS AMMONIUM SALT SOLUTION CONTAINING CHROMATE IONS, (E) REPEATING STEPS (C) AND (D) OR (B) UNTIL THE ALKALI METAL CONTENT IS REDUCED BELOW ABOUT 0.35% WT. AND THE CRYSTALLINITY LOSS IS NOT GREATER THAN 20%, AND (F) COMPOSITING THE ZEOLITE WITH HYDROGENATING-DEHYDROGENATING NETALS OF GROUP VIB AND OR GROUP VIII. THE COMPOSITE IS AN EFFECTIVE ISOMERIZATION OR HYDROCRACKING CATALYST.
Inventors
- 👤 H Schutt
Bibliographic Details
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