Zeolite l

Details Zeolite l Zeolite l

C - Chemistry, Metallurgy

07

C

252/11, 252/2, 2

C07C 7/13 (2006.01) B01J 20/18 (2006.01) B01J 29/60 (2006.01) B01J 29/87 (2006.01) C01B 33/32 (2006.01) C01B 39/08 (2006.01) C01B 39/32 (2006.01) H01L 29/786 (2006.01)

Patent

CA 1332399

ABSTRACT Zeolite L in very small crystalline form is prepared by a process in which an alkaline reaction mixture comprising water, a source of silicon (SiO2), a source of alkali metal (M) (KOH) and a source of aluminium (Al2O3.3H2O) or gallium is heated to a temperature of at least 80°C for a period of time long enough to form zeolite L, the composition of the reaction mixture having the following molar ratios (expressed as oxides): M2O/SiO2 0.4 to 0.5 H2O/M2O 15 to 30 and SiO2/Al2O3 or GA2O3 5 to 11 where M is potassium or a mixture of potassium and one or more other alkali metals.

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