Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/4630
Title: Acylation of 2-methoxynaphthalene over ion-exchanged ß-zeolite
Authors: Kantarlı, İsmail Cem
Artok, Levent
Bulut, Hatice
Yılmaz, Selahattin
Ülkü, Semra
Kantarlı, İsmail Cem
Artok, Levent
Bulut, Hatice
Yılmaz, Selahattin
Ülkü, Semra
Keywords: Acetic anhydride
Chemical structure
Catalysis
Acid anhydride
Issue Date: 2002
Publisher: Elsevier Ltd.
Source: Kantarlı, İ. C., Artok, L., Bulut, H., Yılmaz, S., and Ülkü, S. (2002). Acylation of 2-methoxynaphthalene over ion-exchanged β-zeolite. Studies in Surface Science and Catalysis, 142, 799-806. doi:10.1016/S0167-2991(02)80104-5
Abstract: Friedel-Crafts acylation of 2-Methoxynaphthalene was carried out over various ion-exchanged β zeolites (Mn+β, where Mn+: In3+, Zn2+, Al3+, Fe3+, La3+) with various anhydride (acetic, propionic and benzoic anhydrides), or acyl chloride (acetyl, propionyl and benzoyl chlorides) acylating reagents. The results suggested that selectivity towards the 6-substituted products was higher with the larger size anhydrides, propionic and benzoic anhydrides. The metal cation type within the zeolite significantly influenced the extent of conversion and product distribution. That La3+ exchanged zeolite displayed higher selectivity for the 6-position acylated product with anhydrides ascribed mainly to narrowing of channels by the presence of La(OH)2+ ions that leave no room for the formation of more bulky isomeric forms and to enhanced Bronsted acidity of the zeolite. With acyl chlorides, the recovery of ketone products was found to be remarkably low. 1-Acyl-2-methoxynaphthalenes actively underwent deacylation when acyl chlorides were used as the acylation reagent.
Description: Impact of Zeolites and other Porous Materials on the new Technologies at the Beginning of the New Millennium, Proceedings of the 2 International FEZA (Federation of the European Zeolite Associations) Conference
URI: http://doi.org/10.1016/S0167-2991(02)80104-5
http://hdl.handle.net/11147/4630
ISBN: 9780444511744
ISSN: 0167-2991
0167-2991
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Chemistry / Kimya
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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