Zeolite bodies
AssigneeCambridge Enterprise Limited
InventorsLik Hong Wee, David Fairen-Jimenez
Life of this patent
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Abstract
Described herein are zeolite bodies, in particular those having improved physical and chemical properties, methods of manufacturing the zeolite bodies, and uses of the zeolite bodies, in particular in catalysis and gas separation.
Claims21
-21. (canceled)
A mesoporous zeolite body or bodies comprising greater than 85% zeolite by weight of the or each zeolite body,
- wherein the or each zeolite body has a maximum internal diameter of 0.25 mm to 50 mm;
- wherein the or each zeolite body has an envelope density of between 0.7 g/cm3 and 1.8 g/cm3;
- and wherein macropores comprise less than 10% of an envelope volume of the or each zeolite body.
A mesoporous zeolite body or bodies comprising greater than 85% zeolite by weight of the or each zeolite body,
- wherein the or each zeolite body has a maximum internal diameter of 0.25 mm to 50 mm;
- wherein the or each zeolite body has an envelope density of between 0.7 g/cm3 and 1.8 g/cm3;
- wherein the zeolite forming the or each zeolite body is nanocrystalline zeolite having a mean particle size of less than 1000 nm.
A method of preparing one or more zeolite bodies, wherein the method comprises the steps of:
- a. mixing two or more zeolite precursors to form an organic template-containing synthesis solution;
- b. heating the synthesis solution to obtain a nanocrystalline zeolite colloidal suspension;
- c. concentrating the nanocrystalline zeolite colloidal suspension by centrifugation to obtain a wet nanocrystalline zeolite body;
- d. drying the wet nanocrystalline zeolite body at less than 50° C. to form one or more of said zeolite bodies;
- and
- e. removing organic template to obtain one or more substantially template-free zeolite bodies.
A method of preparing one or more zeolite bodies having an envelope density of greater than about 0.7 g/cm3, the method comprising the steps of:
- a. mixing two or more zeolite precursors to form an organic template-containing synthesis solution;
- b. heating the synthesis solution to a sufficient temperature for a sufficient time to obtain a nanocrystalline zeolite colloidal suspension;
- c. concentrating the nanocrystalline zeolite colloidal suspension by centrifugation to obtain a wet nanocrystalline zeolite body;
- d. drying the wet nanocrystalline zeolite body at less than 50° C. to form one or more solid organic template-containing zeolite bodies having a maximum internal diameter of 0.1 mm to 50 mm;
- and
- e. heating the one or more organic template-containing zeolite bodies to remove the organic template and obtain one or more substantially template-free zeolite bodies.
Dependencies are inferred from the claim text.