Petroleum Processing and Petrochemicals ›› 2013, Vol. 44 ›› Issue (5): 10-13.

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INFLUENCE OF SOURCE OF SILICA AND ALUMINUM ON SYNTHESIS OF ZEOLITE L

  

  • Received:2012-09-13 Revised:2012-10-11 Online:2013-05-12 Published:2013-06-05

Abstract: To study the influence of raw materials on the synthesis of zeolite L, Al(OH)3 from different sources and fumed-silica of different grades were used. The samples were characterized by XRD and BET. The relative crystallinity was calculated. Results show that the carbonation Al(OH)3 is the best aluminum source for increasing relative crystallinity of L zeolite, and the high purity fumed-silica as a single silicon source has also higher crystallinity of L zeolite . Ultrafine fumed-silica can improve the filtering property of zeolite L,and the optimum ratio of ultrafine fumed-silica in hybrid silicon source is 50%, the highest overall efficiency may be achieved at this point.