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US 6,893,624 B2Granted
High activity small crystal ZSM-12
AssigneeExxonMobil Chemical Patents Inc.
InventorsWenyih F. Lai, Ivy D. Johnson
Life of this patent
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Abstract
A porous, crystalline material is described having the framework structure of ZSM-12 and a composition involving the molar relationship: X2O3:(n)YO2 wherein X is a trivalent element, Y is a tetravalent element and n is less than 60. The material has an average crystal size of the material is less than 0.1 micron and a Diffusion Parameter for mesitylene of at least 1000×10−6 sec−1 when measured at a temperature of 100° C. and a mesitylene pressure of 2 torr.
Claims19
A porous, crystalline material having the framework structure of ZSM-12 and a composition involving the molar relationship:
- X2O3:(n)YO2
- wherein X is a trivalent element, Y is a tetravalent element and n is less than 60, wherein the average crystal size of the material is less than 0.1 micron and wherein the material has a Diffusion Parameter for mesitylene of at least 1000×10−6 sec−1 when measured at a temperature of 100° C. and a mesitylene pressure of 2 torr.
Dependencies are inferred from the claim text.