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KMID : 0385519970100010018
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Analytical Science & Technology
1997 Volume.10 No. 1 p.18 ~ p.30
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Spectroscopic Studies on Crystallization of Na, TPA-ZSM-5 synthesized at Low Temperature and Atomospheric pressure
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Yun Young-Ja
Ha Jae-Mok
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Abstract
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Using low temperature and atmospheric pressure method, we synthesized Na, TPA-ZSM-5 with Si/Al ratio of about 100. We employed 27Al and 29Si MAS NMR spectroscopy and FT-IR to investigate the crystallization process as a function of time. The chemical shift depends on the initial composition of reactants and changes during the course of synthesis different from those reported by others earlier. However, the chemical shift of our final product showed in the range of typical ZSM-5. And the defect site was removed by the calcine. From XRD and SEM data, the formation of ZSM-5 was also confirmed.
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KEYWORD
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synthesized at low temperature and atmospheric pre
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