Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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The Crystallization of ZSM-5 at Low Temperature and Atmospheric Pressure

저온 상압하에서 ZSM-5의 결정화 반응

  • Kim, Wha Jung (Department of Industrial Chemistry, College of Engineering, Kon Kuk University) ;
  • Lee, Myung Churl (Department of Industrial Chemistry, College of Engineering, Kon Kuk University) ;
  • Kim, Jo Woong (Catalyst Laboratory in Division of Chemistry, National Institute of Technology and Quality) ;
  • Ha, Jae Mok (Catalyst Laboratory in Division of Chemistry, National Institute of Technology and Quality)
  • 김화중 (건국대학교 공과대학 공업화학과) ;
  • 이명철 (건국대학교 공과대학 공업화학과) ;
  • 김조웅 (국립기술품질원) ;
  • 하재목 (국립기술품질원)
  • Received : 1997.01.22
  • Accepted : 1997.03.14
  • Published : 1997.04.10
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Abstract

ZSM-5 was crystallized at low temperature and atmospheric pressure using reflux unit. The overall molar composition used in this study was $7.83Na_2O-0.25Al_2O_3-100SiO_2-xTPABr-yH_2O$ where x is 1 and 3 mol, and y is 3000 mol, 3500 mol, and 4000 mol. $2^3$ factorial experiments were performed with the results of kinetics studies, showing $Na_2O$, TPABr, and $H_2O$ as main factors. The result suggested that the concentration of $H_2O$ is the most important. The morphology of final product was very uniform showing well-defined crystals with BET surface area of ca. $410m^2/g$.

환류장치를 이용하여 저온-상압하에서 ZSM-5의 결정화 반응을 수행하였다. 반응에 사용된 몰조성은 $7.83Na_2O-0.25Al_2O_3-100SiO_2-xTPABr-yH_2O$로써 x는 1몰 및 3몰, y는 3000몰, 3500몰, 및 4000몰이었다. 또한 저온-상압하에서 수행한 반응속도 연구를 통하여 얻어진 기초 자료를 토대로 $Na_2O$, TPABr 및 $H_2O$를 주요 인자로 한 $2^3$ factorial 실험을 수행한 결과 물의 농도가 가장 중요한 인자임을 알 수 있었다. 생성된 결정은 형태가 매우 균일하고 잘 발달된 결정임을 알 수 있었고 BET 표면적은 평균 $410m^2/g$에 이르는 것을 알 수 있었다.

Keywords

Acknowledgement

Supported by : 통상산업부

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