Phosphorus stabilized zeolites
AssigneeBASF SE
InventorsDavid M. Stockwell, Michelle Scamporino, Alvaro Gordillo Bolonio
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Abstract
Disclosed herein are phosphated low silica to alumina ratio (SAR) zeolites and methods of formation and stabilization thereof to minimize complete de-alumination of tetrahedral framework aluminum. Also disclosed herein are catalyst compositions, catalyst components, adsorbents, and ion exchange materials including said phosphated low SAR zeolites, methods of formation thereof, and methods of use thereof.
Claims17
A zeolite comprising phosphated low silica to alumina ratio (SAR) zeolite, wherein at least 40% of the aluminum remains substantially intact after phosphorus stabilization, wherein the zeolite is template free beta zeolite having an Al2O3 concentration of greater than about 8 wt %, based on total weight of the zeolite, and wherein the low SAR zeolite is a zeolite with a SAR lower than about 30.
A catalyst component comprising phosphated low silica to alumina ratio (SAR) zeolite, wherein at least 40% of the aluminum remains substantially intact after phosphorus stabilization, and wherein the low SAR zeolite is a zeolite with a SAR lower than about 30, and a non-zeolitic matrix.
An adsorbent comprising zeolite comprising phosphated low silica to alumina ratio (SAR) zeolite, wherein at least 40% of the aluminum remains substantially intact after phosphorus stabilization, and wherein the low SAR zeolite is a zeolite with a SAR lower than about 30, and a substrate.
A process for forming phosphated zeolite, comprising:
- performing a phosphorus stabilization reaction of a phosphorus source onto a partially dislodged tetrahedral framework aluminum (AlTd) of a zeolite, wherein the aluminum remains substantially intact, and wherein the zeolite is template free beta zeolite.
Dependencies are inferred from the claim text.