Premium
Formation of Novel ZSM‐5/Porous Mullite Composite from Sintered Kaolin Honeycomb by Hydrothermal Reaction
Author(s) -
Katsuki Hiroaki,
Furuta Sachiko,
Komarneni Sridhar
Publication year - 2000
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2000.tb01336.x
Subject(s) - mullite , materials science , composite number , hydrothermal circulation , honeycomb , microporous material , porosity , zsm 5 , zeolite , composite material , crystallization , honeycomb structure , amorphous solid , chemical engineering , ceramic , chemistry , catalysis , biochemistry , organic chemistry , engineering
The formation and properties of continuous ZSM‐5 film on a porous mullite honeycomb have been investigated. The porous mullite honeycomb coated with ZSM‐5 film provides a novel microporous (0.5 nm in diameter)–macroporous (0.5–0.6 μm in diameter) composite. Amorphous silica‐glass in the kaolin honeycomb sintered at 1650°C is used as a source for ZSM‐5 formation. The honeycomb is hydrothermally treated in NaOH, tetrapropylammonium bromide, and water to prepare a novel honeycomb–zeolite composite by in situ crystallization of ZSM‐5 film. This paper describes the effects of hydrothermal conditions—such as reaction temperature, time, and concentration of NaOH solution—on the formation of ZSM‐5 film on the honeycomb, and on the mechanical strength and porous properties of the honeycomb composite.