| الملخص | This research studied the preparation of faujasite zeolite Y from Kaolin and Bentonite clays. To prepare zeolite Y from kaolin , two procedures were used to increase the ratio of SiO2/Al2O3in the reaction mixture: the first was by adding sodium silicate, while the second was treating metakaolin with sulfuric acid solutions at different conc. Entrations and temperatures. In the first process metakaolin was added to sodium hydroxide and sodium silicate, different parameterswere tested: SiO2/Al2O3, ageing periods and crystallization temperatures.
The optimum crystallinity was 104.8% achieved by SiO2/Al2O3 5.5, ageing time 3 days and crystallization at 95°C.In the second procedure amorphous dealuminated metakaolin (SiO2/Al2O3=7.64) was mixed with sodium hydroxidesolution, aged and crystallized at the same optimum conditions above. The crystallinity was 48%.Calcined bentonite was mixed with sodium hydroxide solution SiO2/Al2O3 =5.3, aged at room temperature for different periods, crystallized at 95°C. The crystallinity was 27.1%.Prepared zeolite was formed with kaolin clay. Bulk density, bulk crushing strength, and surface area were tested.The adsorption capacity for separation of H2O and H2S from LPG was 7.82gH2O/g and 0.3755gH2S/g. | en_US |
