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US 6,645,899 B1Granted
Method of the removal of the templating agent from synthetic zeolites
AssigneeEnichem S.p.A.
InventorsStefano Palmery, Fausto Genoni, Guido Spano′, Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni
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Abstract
The present invention relates to a method for the removal of the templating agent from synthetic zeolites in general and in particular from silicalite, titanium silicalite and from composite materials containing zeolites and for their activation as catalysts. The method consists in treating the above materials with solvents in vapor phase and at a low temperature.
Claims32
A process for removing a templating agent from zeolites, comprising
- treating the zeolites with a vapor phase comprising at least one member selected from the group consisting of methanol, a methyl ester, or a methyl halide at molar concentrations ranging from 20 to 100% molar, at a temperature ranging 250° to 380° C., for a duration of contact time ranging form 0.1 to 5 s and prolonging the treatment for a duration of time ranging from 0.25 to 72 hours.
Dependencies are inferred from the claim text.