| 简介 |
The inclusion of silicon (Si) and boron (B) in the matrix of the catalyst improves its activity and selectivity compared to other previous dealuminized zeolite Y catalysts. The catalyst comprises a matrix and a dealuminized zeolite Y with a crystalline parameter of 2.424 nm x 2.455 nm. The molar ratio silica/alumina (SiO2/Al2O3) (global) is greater than 8, the cation content of alkali or alkaline earth metals and/or rare earths is such that the atomic ratio (nMn+)/Al is less than 0.8, the surface area (BET) is greater than 400 m/g and the water adsorption capacity (25 degrees C), for a value P/Po of 0.2, is greater than 6 wt.%. The catalyst also comprises a hydro-dehydrogenating metal and Si deposited on the catalyst. Independent claims are also included for preparation of the above catalyst and its use in hydrocracking reactions. |
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