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

비이온성 계면활성제 수용액에서 Na2SiO3와 H2SiF6의 반응을 통한 메조포러스 실리카의 제조

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

Abstract

Mesoporous molecular sieves were prepared by the reaction of $Na_2SiO_3$ and $H_2SiF_6$ using nonionic micelle templates in an aqueous solution. Well-crystalline mesoporous molecular sieves were obtained after several seconds at atmospheric conditions. Powder samples exhibited d-spacing of 3.8-5.1 nm with the sharpness of the d00l peak, showing well-crystalline mesoporous molecular sieves, pore size distributions of 2.5-3.1 nm and large specific surface areas of $290-1,018m^2/g$, depending on types of surfactants. SEM images of samples showed well-divided spherical particles with an uniform size of ${\sim}0.5{\mu}m$ and TEM images demonstrated uniform pores with a worm hole shape.

Keywords

nonionic surfactant;mesoporous material;sodium silicate;fluorosilisic acid

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