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In a further embodiment of the invention, the autoclavation temperature is varied from 150 to 250°C, preferably under supercritical temperature of organic solvent.In yet another embodiment of the invention, the autoclavation pressure is varied from 20 to 50 atm near to sub-critical and supercritical pressure of the organic solvent used.(4) The definite Si/Al ratio in the gel and the product (5) product yield.Objects of the invention Accordingly it is an object of the invention to provide a process for the preparation of ZSM-5 catalyst which is commercially feasible.
The ZSM-5 material showed characteristic X-ray diffraction pattern.
It is another object of the invention, to provide a process for the preparation of ZSM - 5 catalyst which shows high X-ray and crystalline phase purity and specific Si/Al ratios.