摘要:
The present invention concerns zeolites with hierarchical porosity having a molar ratio Si/AI of between 1 and 1.4, inclusive, of which the average diameter, as a number, is between 0.1 μm and 20 μm, having controlled and optimised crystallinity, and having mesoporosity such that the mesoporous outer surface area is between 40 m 2 . g-1 and 400 m2.g-1. The present invention also concerns the method for preparing said zeolites with hierarchical porosity.
摘要:
The present invention concerns Y-type FAU zeolites with hierarchical porosity having an Si/AI atomic ratio strictly greater than 1.4 and less than or equal to 6, having controlled and optimised crystallinity, and having mesoporosity such that the mesoporous outer surface area is between 40 m 2 . g-1 and 400 m2. g-1. The present invention also concerns the method for preparing said Y-type FAU zeolites with hierarchical porosity.
摘要:
The present invention relates to a novel method of purifying a gas stream contaminated by CO2, hydrocarbons and/or nitrogen oxides, in particular a gas stream based an air or a syngas, by adsorption an a bed of aggregated zeolitic adsorbent based an an LSX zeolite or LSX and X zeolites, of which at least 90% of the exchangeable cationic sites of the LSX zeolite or of the LSX/X zeolite blend are occupied by sodium Ions, and the inert binder of which represents at most 5% of the weight of the adsorbent.