シリカライト膜をコートしたムライト質ハニカム多孔体の水熱合成と特性

概要

論文の詳細を見る
The formation and some properties of sintered kaolin honeycomb monolith with thick silicalite film, prepared by a hydrothermal reaction, were investigated. To enhance the adhesion strength of the silicalite film onto the honeycomb surface and the mechanical strength of the honeycomb body, the Malaysian kaolin was sintered at 1500℃ and then treated in 1M NaOH solution at 180℃ to form a partially porous mullite layer on the honeycomb. Silicalite film was hydrothermally prepared on porous honeycomb from colloidal silica, NaOH, tetrapropylammonium bromide and H_2O at 180℃. The effect of hydrothermal reaction time on the formation of the siilcalite film onto the porous honeycomb surface and Teflon vessel was studied. Due to the formation of a porous mullite layer of 150 to 160 μm in thickness on the honeycomb surface by leaching silica in the honeycomb, the adhesion strength of silicalite film on the honeycomb was improved, and a sintered kaolin honeycomb monolith with high strength which was coated with a silicalite film of 100 to 150 μm in thickness at 180℃ for 25 to 30 h could be prepared by hydrothermal reaction.
社団法人日本セラミックス協会の論文
2001-10-01