Patent ID: 7244409
Filing Date: 2007-07-17
Classification: B01J,C01B,C07C,Y02P,Y10S

Abstract:
1. A process for producing synthetic zeolites with a MFI structure and a Si/Al atomic ratio of from about 8 to about 45:1 comprising reacting a Si source, an Al source and an organic template under hydrothermal conditions to produce a reaction product; wherein the reaction product comprises primary crystallites of essentially spherical shape and having a size of about 0.01 to 0.05 microns, wherein the ratio between the longest and shortest axis of the primary crystallites is about 1.0 to 1.5:1; and wherein the process is carried out in the presence of seed crystals of the zeolite with an average particle size from about 10 to 100 nm, without separation of the seed crystals from a mother liquor produced from an earlier synthetic zeolite production process.