Synthesis of zsm-48 crystals with heterostructural, non...

Details Synthesis of zsm-48 crystals with heterostructural, non... Synthesis of zsm-48 crystals with heterostructural, non...

C - Chemistry, Metallurgy

01

B

C01B 33/36 (2006.01) C01B 39/00 (2006.01) C01F 7/00 (2006.01)

Patent

CA 2558355

Pure phase, high activity ZSM-48 crystals having a SiO2/A12O3 ratio of less than about 150/1, substantially free from ZSM-50 and Kenyaite, and fibrous morphology crystals. The crystals may further have a specific cross morphology. A method for making such crystals using heterostructural, zeolite seeds, other than ZSM-48 and ZSM-50 seeds.

La présente invention concerne des cristaux ZSM-48 en phase pure et hautement actifs présentant un rapport SiO¿2?/Al¿2?O¿3? inférieur à environ 150/1; sensiblement exempts de ZSM-50 et de Kenyaite, et des cristaux à morphologie fibreuse. Ces cristaux peuvent en outre présenter une morphologie en croix. L'invention concerne également un procédé de fabrication de tels cristaux au moyen de germes zéolites hétérostructuraux autres que ZSM-48 et ZSM-50.

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