Abstract
ZSM-5 zeolite having a SiO2/Al2O3 molar ratio of 39.4 was treated in a NaOH alkali solution and the changes in structural and acidic properties were investigated. A siliceous species was selectively dissolved from the framework of zeolite, although a lower amount of Al was also eluted. In this procedure, mesopores with a uniform size were formed on the zeolite, while the microporous structure remained. The acidic property was changed very little quantitatively or qualitatively, even though the catalytic activity for cracking of cumene was enhanced by the alkali-treatment. This can be explained by the facts that adsorptive and diffusive properties of cumene through micropores of the ZSM-5 are increased by the creation of mesopores.
| Original language | English |
|---|---|
| Pages (from-to) | 33-43 |
| Number of pages | 11 |
| Journal | Applied Catalysis A: General |
| Volume | 219 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 2001 Oct 5 |
| Externally published | Yes |
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Keywords
- Acidity
- Alkali-treatment
- Mesopore
- ZSM-5
ASJC Scopus subject areas
- Catalysis
- Process Chemistry and Technology
Cite this
Alkali-treatment technique - New method for modification of structural and acid-catalytic properties of ZSM-5 zeolites. / Ogura, Masaru; Shinomiya, Shin Ya; Tateno, Junko; Nara, Yasuto; Nomura, Mikihiro; Kikuchi, Eiichi; Matsukata, Masahiko.
In: Applied Catalysis A: General, Vol. 219, No. 1-2, 05.10.2001, p. 33-43.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Alkali-treatment technique - New method for modification of structural and acid-catalytic properties of ZSM-5 zeolites
AU - Ogura, Masaru
AU - Shinomiya, Shin Ya
AU - Tateno, Junko
AU - Nara, Yasuto
AU - Nomura, Mikihiro
AU - Kikuchi, Eiichi
AU - Matsukata, Masahiko
PY - 2001/10/5
Y1 - 2001/10/5
N2 - ZSM-5 zeolite having a SiO2/Al2O3 molar ratio of 39.4 was treated in a NaOH alkali solution and the changes in structural and acidic properties were investigated. A siliceous species was selectively dissolved from the framework of zeolite, although a lower amount of Al was also eluted. In this procedure, mesopores with a uniform size were formed on the zeolite, while the microporous structure remained. The acidic property was changed very little quantitatively or qualitatively, even though the catalytic activity for cracking of cumene was enhanced by the alkali-treatment. This can be explained by the facts that adsorptive and diffusive properties of cumene through micropores of the ZSM-5 are increased by the creation of mesopores.
AB - ZSM-5 zeolite having a SiO2/Al2O3 molar ratio of 39.4 was treated in a NaOH alkali solution and the changes in structural and acidic properties were investigated. A siliceous species was selectively dissolved from the framework of zeolite, although a lower amount of Al was also eluted. In this procedure, mesopores with a uniform size were formed on the zeolite, while the microporous structure remained. The acidic property was changed very little quantitatively or qualitatively, even though the catalytic activity for cracking of cumene was enhanced by the alkali-treatment. This can be explained by the facts that adsorptive and diffusive properties of cumene through micropores of the ZSM-5 are increased by the creation of mesopores.
KW - Acidity
KW - Alkali-treatment
KW - Mesopore
KW - ZSM-5
UR - http://www.scopus.com/inward/record.url?scp=0035812991&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035812991&partnerID=8YFLogxK
U2 - 10.1016/S0926-860X(01)00645-7
DO - 10.1016/S0926-860X(01)00645-7
M3 - Article
VL - 219
SP - 33
EP - 43
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
SN - 0926-860X
IS - 1-2
ER -