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Silane 처리에 의한 MCM-41과 KIT-1 메조포러스 물질의 수열 및 기계적 안정성 증진

Improvement of Hydrothermal and Mechanical Stabilities of MCM-41 and KIT-1 Mesoporous Material by Silane Modification

정권희 김종호 서곤

Jung KH Kim JH Seo G

HWAHAK KONGHAK, December 1997, 35(6), 895-899(5), NONE

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Abstract

MCM-41과 KIT-1 메조포러스 물질의 실란 처리로 인한 수열 및 기계적 안정성 증진 효과를 수열 및 압축 처리 후 X-선 회절 패턴과 질소 흡착등온선으로 조사하였다. KIT-1 메조포러스 물질은 MCM-41 메조포러스 물질에 비해 수열 안정성이 우수한 반면, 기계적 안정성은 MCM-41 메조포러스 물질이 더 우수하였다. 실란 처리로 수열 및 기계적 안정성은 뚜렷이 증진되었으며, 실란이 히드록실기와 반응하여 주변이 실리카로 침적되므로 물의 접촉을 차단하고 균열 발생을 지연시켜서 안정성이 증진되는 것으로 설명되었다.

The improvement in hydrothermal and mechanical stabilities of MCM-41 and KIT-1 mesoporous material were examined from X-ray diffraction patterns and N₂ adsorption isotherms after hydrothermal and compression treatments. KIT-1 mesoporous material shows better hydrothermal stability than MCM-41 mesoporous material, while mechanical stability is better for MCM-41 mesoporous material. The hydrothermal and mechanical stabilities of mesoporous material are remarkably improved by silane modification. Silane reacts with surface hydroxyl group, resulted in the improvement of the stabilities due to inhibition from water attack and crack initiation.

Keywords

Mesoporous Material MCM-41 KIT-1 Silane Modification Hydrothermal and Mechanical Stabilities

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