Analytical Science and Technology (분석과학)

The Korean Society of Analytical Sciences (한국분석과학회)
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Spectroscopic Studies on Crystallization of Na, TPA-ZSM-5 synthesized at Low Temperature and Atomospheric pressure

저온 상압에서 합성된 Na, TPA-ZSM-5의 결정화에 관한 분광학적 고찰

  • Yun, Young Ja (Department of Chemistry, Soongsil University) ;
  • Ha, Jae Mok (National Institute of Technology and Quality)
  • Received : 1996.09.19
  • Published : 1997.02.25
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Abstract

Na, TPA-ZSM-5 with Si / Al mole ratio of about 130 was synthesized at low temperature and atmospheric pressure. These intermediate products were characterized by using XRD, XRF, FT-IR, NMR, and SEM. As a result, intermediate product were different from those that synthesized by autoclave method but spectroscopic characteristics of the final products showed to be in the typical ZSM-5 region. The defect sites were observed in the final product and removed by calcination at $540^{\circ}C$. Na, TPA-ZSM-5, aboveall, was synthesized at this condition within 48hr.

Si / Al비가 130 정도인 Na, TPA-ZSM-5를 저온 상압법으로 합성하였으며, 이들의 결정화 과정을 XRD, XRF, FT-IR, NMR 및 SEM을 이용하여 고찰하였다. 결정의 형성과정은 autoclave법과는 다소 다르게 나타났으나 최종 생성물의 분광학적 특성은 전형적인 ZSM-5 영역에서 나타났다. 또한 반응 도중 생성된 국부결함은 소성에 의해 제거됨을 알 수 있었으며, 저온상압하에서도 반응시간을 48시간 이내로 단축할 수 있음을 알 수 있었다.

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