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Crystal Research and Technology |
Cryst. Res. Technol. 41, 145 (2006) - Abstract -
Synthesis of nanosized ZSM-5 using different alumina sources
A. A. Ismail, R. M. Mohamed, O. A. Fouad, and I. A. Ibrahim
Central Metallurgical R&D Institute, CMRDI, P. O. Box 87, Helwan, Cairo, Egypt
Alumina sources can influence different aspects of ZSM-5 crystallization and it leads to change in the properties of the final product. The crystallinity of nanosized ZSM-5 zeolite from precursors mixtures containing different alumina sources, e.g. sodium aluminate, aluminum sulphate, aluminum hydroxide and alumina has been studied. The produced samples were investigated using XRD, SEM, FT- IR and BET surface area. The product obtained by sodium aluminate and aluminum sulphate was ZSM-5 phase. Whereas, the product obtained by aluminum hydroxide and alumina was the albit phase. As-synthesized ZSM-5 was prepared by sodium aluminate, as alumina source was the highest crystallinity. It was found that the average crystallite size increased in the following order; alumina
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