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- W2493778596 abstract "The acidity of dealuminated Y zeolites prepared either by conventional treatments or isomorphous substitution has been characterized in detail through a microcalorimetric study of the adsorption of ammonia. In agreement with previous studies, microcalorimetry confirms that in steamed products, most of the strong acid sites are poisoned by cationic extra-framework Al species. These sites can be recovered by an optimized post-steaming acid leaching. Isomorphously substituted HY which is free of extra-framework cationic species possesses more acid sites than conventionally dealuminated solids with similar framework Si/AlIV ratio. The catalytic performances of the solids in the conversion of cyclohexene are in qualitative agreement with their acidic properties as determined by calorimetric experiments or other techniques such as TPD of ammonia and infrared spectroscopy." @default.
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- W2493778596 date "1988-05-27" @default.
- W2493778596 modified "2023-09-24" @default.
- W2493778596 title "Strong Acid Sites of Dealuminated Y Zeolites Prepared by Conventional Treatments and Isomorphous Substitution" @default.
- W2493778596 doi "https://doi.org/10.1021/bk-1988-0368.ch006" @default.
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