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- W1550100180 abstract "Abstract Pillared clays, with pore openings in the 7–15 A range and possessing moderate acid activity have gained notoriety over the past 20 years as co-catalysts for the conversion of heavy feedstocks. [1-3]While “once through” catalysts, incorporating such pillared materials have shown important product selectivity improvements in FCC evaluations (in particular an increase in C 5 + gasoline/ conversion), their lack of hydrothermal stability under realistic FCC regeneration conditions have prevented their widespread use. We have synthesized active, pillared catalysts that have exhibited shape selectivity in model compound test reactions and reasonable hydrothermal stability under steaming conditions at temperatures up to 700°C. These molecular sieves have been developed based on the intercalation of metalloaluminophosphates gels into the layered silicate, kenyaite. Model compound reaction test results indicate that these molecular sieves exhibit product shape selectivity comparable to small 12-membered ring pore opening zeolites such as ZSM- 12 and mordenite. By variation of the reaction composition, various shape selectivities were realized suggesting methods for “tailoring” pore dimensions for particular reactions. Furthermore, the chemical nature of these phosphorus-containing materials suggests a method for the incorporation of catalytically important chemistry into the intercalated catalysts." @default.
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- W1550100180 date "2004-01-01" @default.
- W1550100180 modified "2023-09-26" @default.
- W1550100180 title "The generation of shape selective intercalated kenyaites" @default.
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- W1550100180 doi "https://doi.org/10.1016/s0167-2991(04)80563-9" @default.
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