Effect of steam on the steam-assisted crystallization of *bEA-type zeolite

Satoshi Inagaki; Kei Nakatsuyama; Eiichi Kikuchi; Masahiko Matsukata

doi:10.1246/bcsj.20090016

Effect of steam on the steam-assisted crystallization of *bEA-type zeolite

Satoshi Inagaki, Kei Nakatsuyama, Eiichi Kikuchi, Masahiko Matsukata^*

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We have studied the effect of steam in the steam-assisted crystallization (SAC) of *BEA-type zeolite. It was found that after an aluminosilicate dry gel with SiO₂/Al₂O₃ = 100 was treated with steam in an autoclave at 130 °C and autogenous pressure, the thermal treatment of a resulting product at 130 °C in an autoclave without the addition of water gave *BEA nanoparticles with a high crystallinity. It was presumed that pseudo-*BEA structures as intermediates were formed during the SAC treatment, and the dehydration of silanols in the pseudo-*BEA solids during the thermal treatment in the presence of a minimum amount of water possibly promoted the transformation of the pseudo-*BEA phase into *BEA crystalline phase with a periodicity in long-range order.

Original language	English
Pages (from-to)	69-74
Number of pages	6
Journal	Bulletin of the Chemical Society of Japan
Volume	83
Issue number	1
DOIs	https://doi.org/10.1246/bcsj.20090016
Publication status	Published - 2010

ASJC Scopus subject areas

Chemistry(all)

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abstract = "We have studied the effect of steam in the steam-assisted crystallization (SAC) of *BEA-type zeolite. It was found that after an aluminosilicate dry gel with SiO2/Al2O3 = 100 was treated with steam in an autoclave at 130 °C and autogenous pressure, the thermal treatment of a resulting product at 130 °C in an autoclave without the addition of water gave *BEA nanoparticles with a high crystallinity. It was presumed that pseudo-*BEA structures as intermediates were formed during the SAC treatment, and the dehydration of silanols in the pseudo-*BEA solids during the thermal treatment in the presence of a minimum amount of water possibly promoted the transformation of the pseudo-*BEA phase into *BEA crystalline phase with a periodicity in long-range order.",

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AU - Nakatsuyama, Kei

AU - Kikuchi, Eiichi

AU - Matsukata, Masahiko

PY - 2010

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AB - We have studied the effect of steam in the steam-assisted crystallization (SAC) of *BEA-type zeolite. It was found that after an aluminosilicate dry gel with SiO2/Al2O3 = 100 was treated with steam in an autoclave at 130 °C and autogenous pressure, the thermal treatment of a resulting product at 130 °C in an autoclave without the addition of water gave *BEA nanoparticles with a high crystallinity. It was presumed that pseudo-*BEA structures as intermediates were formed during the SAC treatment, and the dehydration of silanols in the pseudo-*BEA solids during the thermal treatment in the presence of a minimum amount of water possibly promoted the transformation of the pseudo-*BEA phase into *BEA crystalline phase with a periodicity in long-range order.

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Effect of steam on the steam-assisted crystallization of *bEA-type zeolite

Abstract

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