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비이온성 계면활성제 수용액에서 Na2SiO3와 H2SiF6의 반응을 통한 메조포러스 실리카의 제조

Preparation of Mesoporous Molecular Sieve by the Reaction of Na2SiO3 and H2SiF6 in the Presence of an Aqueous Nonionic Surfactant Solution

  • 김진영 (전남대학교 화공생명공학과) ;
  • 권오윤 (전남대학교 화공생명공학과)
  • Kim, Jin-Yeong (Department of Chemical and Biomolecular Engineering, Chonnam National University) ;
  • Kwon, Oh-Yun (Department of Chemical and Biomolecular Engineering, Chonnam National University)
  • 투고 : 2017.11.20
  • 심사 : 2017.12.04
  • 발행 : 2018.02.10

초록

비이온성 계면활성제 수용액 중에서 $Na_2SiO_3$$H_2SiF_6$의 빠른 반응을 통하여 메조포러스 분자체를 제조하였다. 침전은 수초 이내에 형성되었으며, 시료의 XRD분석은 d-spacing이 3.1-5.8 nm인 잘 발달된 피크를 나타내어 메조포러스분자체임을 확인할 수 있었다. 비표면적은 비이온 계면활성제에 따라 $290-1,018m^2/g$의 큰 값을 나타내었으며, 기공분포는 2.5-3.1 nm의 일정한 값을 보여주었다. SEM을 통해 관찰한 입자의 모양은 크기가 ${\sim}0.5{\mu}m$로 균일하고 잘 분리된 구형이었으며, TEM은 기공의 형태가 일정크기의 벌레구멍 모양임을 보여주었다.

키워드

nonionic surfactant;mesoporous material;sodium silicate;fluorosilisic acid

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