Method for producing open framework zeolites

Details Method for producing open framework zeolites Method for producing open framework zeolites

B - Operations, Transporting

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B01J 29/06 (2006.01) C01B 39/04 (2006.01) C01B 39/14 (2006.01) C01B 39/30 (2006.01)

Patent

CA 1038850

A METHOD FOR PRODUCING OPEN FRAMEWORK ZEOLITES Abstract of the Disclosure High purity synthetic zeolites having open frameworks, such as offretite, uncontaminated with detectable traces of other zeolites, can be synthesized by the hydrothermal reaction of a silica source, alumina source, sodium hydroxide and/or potassium hydroxide in the presence of a zeolite nucleation slurry synthesized from a mixture of a silica source, alumina source, sodium hydroxide and/or potassium hydroxide and an organic template agent. The preferred organic template agents are the quaternary compounds wherein the central element is one from Group 5A of the Periodic Table and various conjugated aromatic compounds. The zeolite synthesis mixture itself does not contain any organic ion template agent. With this organic template agent not being required, the nucleation slurry is used to promote crystallization of the synthesis mixture to the open framework type of zeolite. The synthetic zeolites produced were found to have the capacity of a pure mineral offretite in regards to their adsorption capacity for large molecules. - 1 -

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