Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Synthesis and Characterization of Aluminosilicate Prepared Using Structure Directing Agent Containing Piperidine Moiety

피페리딘형 구조유도분자를 이용한 알루미노실리케이트 제올라이트의 합성 및 특성 연구

  • Kim, Su Hyun (School of Applied Chemical Engineering and the Institute of Catalysis Research, Chonnam National University) ;
  • Park, Sung Jun (School of Applied Chemical Engineering and the Institute of Catalysis Research, Chonnam National University) ;
  • Shin, Na Ra (School of Applied Chemical Engineering and the Institute of Catalysis Research, Chonnam National University) ;
  • Cho, Sung June (School of Applied Chemical Engineering and the Institute of Catalysis Research, Chonnam National University)
  • 김수현 (전남대학교 응용화학공학부) ;
  • 박성준 (전남대학교 응용화학공학부) ;
  • 신나라 (전남대학교 응용화학공학부) ;
  • 조성준 (전남대학교 응용화학공학부)
  • Received : 2012.12.10
  • Accepted : 2013.01.03
  • Published : 2013.04.01
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Abstract

Zeolites with different structures were synthesized from the hydrothermal synthesis condition employing simple structure directing agent (SDA) containing piperidine moiety. The gel containing $1.0SiO_2$:0.9SDA:$0.062NaAlO_2$:0.217NaOH:$20H_2O$ was subject to hydrothermal synthesis at 413~453 K for 7 days. FER type zeolite was obtained at 433 K when piperidine was employed as SDA, whereas TON and MFI type zeolites were also obtained at 433 K when 2,6-dimethylpiperidine and 2,2,6,6-tetramethylpiperidine were used, respectively. Further increase of hydrothermal synthesis temperature to 453 K resulted in the formation of TON type zeolite when 2-mtheylpiperidine was used. The structural analysis of powder X ray diffraction pattern over FER type zeolite suggested that the SDA, piperidine interacted intimately with the zeolite where it located close to the framework.

피페리딘 구조가 포함된 구조유도분자를 이용하여 알루미노실리케이트 제올라이트를 합성하고 특성을 분석하였다. 제올라이트 합성은 $1.0SiO_2$:0.9SDA:$0.062NaAlO_2$:0.217NaOH:$20H_2O$ 조성의 겔을 413~453 K로 수열합성 온도를 조절하여 7일 동안 수열합성을 하였다. 구조유도분자의 크기와 온도가 증가함에 따라 다양한 제올라이트를 얻을 수가 있었다. 피페리딘은 433 K의 수열합성 조건에 FER 제올라이트 구조형성을 유도하였으며 2,6-디메틸피페리딘과 2,2,6,6-테트라메틸피페리딘은 동일한 조건에서 각각 TON형 제올라이트와 MFI형 제올라이트 구조 형성을 유도하였다. 수열합성온도를 453 K로 증가시키면 2-메틸피페리딘은 TON형 제올라이트 구조 형성을 유도하였다. 분말 X 선 회절법의 분석결과로부터 FER형 제올라이트를 형성한 피페리딘 구조유도분자가 제올라이트 골격과 강한 상호작용을 하고 있음을 확인하였다.

Keywords

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