Modeling of Nature and Strength of Acid Centres in Ultrastable Zeolites as a Component of Hydrocracking Catalysts

摘要

The methods of X-ray diffraction, IR-spectroscopy and TPD of ammonia had been used for investigation of crystal framework structure, nature of surface hydroxyl groups, number and distribution on strength of ultra stable zeolite Y acid centres and its modifications by acid and ultra stable zeolite the influence of modifying ways on activity and selectrivity of catalysts had been investigated.