cost of the raw materials the slurry was prepared from 14 g of calcium hydroxide 51 g of strontium hydroxide octahydrate 445 g of silica sol 149 g of alumina sol 12 g of ferrierite powder and 279 g of water the ratio of reactants in the slurry was 0 5 sro 0 5 cao al 2 o 3 10 sio 2 125h 2 o the slurry was placed in a pressure vessel sealed and heated at 300 u00b0 c for three days the product was recovered washed with hot deionized water dried and the x ray diffraction pattern was determined the product was shown to be ferrierite the chemical analysis of the product was as follows an effort was made to determine whether a suitable product would be prepared if a smaller amount of a natural ferrierite was added to seed the synthesis slurry a slurry having the oxide ratio of sro 1 al 2 o 3 10 sio 2 125 h 2 o was prepared by mixing 8 5 g of natural table c__________________________________________________________________________x ray powder patterns of synthetic ferrieritesexampleno 1 20 22 25type of strontium strontium lithium strontium ferrierite lithium potassium sodiumhkl da i da i da i da i__________________________________________________________________________200 9 50 47 9 50 49 9 50 81 9 50 53020 7 02 14 7 08 17 7 02 31 7 08 23101 6 91 14 6 91 12 6 91 26 6 96 13011 6 60 39 6 60 30 6 60 23 6 60 22310 5 79 10 5 79 11 5 79 11 5 79 13220 5 68 8 5 71 8 5 68 8 5 68 10211 5 37 5 5 40 4 5 43 1 5 43 2121 5 01 3 4 98 2 4 95 8 4 95 5301 4.