zeolites may be natural or synthetic and are inorganic crystalline aluminosilicates , with a highly regular structure of pores and channels rendering them suitable for molecular sieving , adsorption , ion exchange , dehydration , and rehydration processes for example . they generally have a definite crystalline structure as evidenced by x - ray diffraction . the present invention relates to the area of zeolites and its method of production . more particularly but not exclusively it relates to a novel zeolite ics - 3 in its “ as synthesized ” and its calcined forms and the method of producing both these forms .