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US 12,290,800 B2Granted
Method for manufacture of co-crystallized pentasil zeolite and zeolite mordenite in the presence of ODSO
AssigneeSaudi Arabian Oil Company
InventorsRobert P. Hodgkins, Omer Refa Koseoglu
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Abstract
The present disclosure is directed to a method of manufacture of co-crystallized pentasil zeolite and zeolite mordenite (hereinafter “MFI/MOR zeolites”). This is accomplished by using an improved sol-gel formulation including a water-soluble fraction of ODSO as an additional component. The resulting products are, or contain, co-crystallized MFI/MOR zeolites, whereas in the absence of the ODSO, the resulting products are analcime, typically considered a zeolite impurity.
Claims20
A method for the preparation of co-crystallized MFI/MOR zeolite comprising:
- forming a homogeneous aqueous mixture of a silica source, an aluminum source, an alkali metal source, an optional structure directing agent, and an effective amount of water-soluble oxidized disulfide oil (ODSO);
- and
- heating the homogeneous aqueous mixture under conditions and for a time effective to form a crystalline zeolite as precipitate suspended in a supernatant, wherein the precipitate comprises co-crystallized MFI/MOR zeolite.
Dependencies are inferred from the claim text.