Westerman, Hattori, Daniels & Adrian, LLP
Method for synthesizing silicoaluminophosphate-34 molecular sieves
A method for synthesizing small crystals of silicoaluminophosphate-34 (SAPO-34) molecular sieves with high structural purity. The method includes forming a first slurry and a second slurry which are aged separately to form a first aged slurry and a second aged slurry. The first slurry includes a first source of phosphorus, a first source of aluminium, a first source of silicon, and at least one first organic structure directing agent. The second slurry includes a second source of phosphorus, a second source of aluminium, a second source of silicon, and at least one second organic structure directing agent. Then, the first aged slurry and the second aged slurry are combined to form a mixture of aged slurries. Finally, crystallization of silicoaluminophosphate molecular sieves comprising the SAPO-34 molecular sieves is induced from the mixture of aged slurries.
W.R. GRACE & CO.—CONN
B C B B C C B
B01J C07C B01J B01J C01B C07C B01J
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Qiuhua Manoj M.
Zhang Koranne