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On the Role of Zeolite Structure and Acidity in Toluene Acylation with Isobutyric Acid Derivatives
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SYSNO ASEP 0101103 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název On the Role of Zeolite Structure and Acidity in Toluene Acylation with Isobutyric Acid Derivatives Překlad názvu Vliv struktury různých typů zeolitů a jejich kyselosti na acylaci toluenu deriváty isobutyrové kyseliny Tvůrce(i) Klisáková, Jana (UFCH-W)
Červený, L. (CZ)
Čejka, Jiří (UFCH-W) RID, ORCID, SAIZdroj.dok. Applied Catalysis A - General. - : ELSEVIER SCIENCE BV - ISSN 0926-860X
Roč. 272, č. 1 (2004), s. 79-86Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova toluene acylation ; isopropyltolyl ketone ; zeolite catalysts Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEP GA203/03/0804 GA ČR - Grantová agentura ČR KJB4040402 GA AV ČR - Akademie věd CEZ AV0Z4040901 - UFCH-W Anotace Zeolite catalysts of various structures and type and concentration of acid sites were investigated in a liquid phase acylation of toluene with derivatives of isobutyric acid. The highest conversions of isobutyryl chloride or isobutyric anhydride were obtained over three-dimensional large pore zeolite Beta and zeolite Y possessing medium concentration of acid sites. In general, the conversion of acylating agents increases with increasing pore size diameter and dimensionality of the channel system. Large-pore zeolites with three-dimensional channel system enable easier desorption and transport of bulky isopropyltolyl ketone. The activity of the zeolites used can be also controlled by tailoring their hydrophobic/hydrophilic properties. The higher initial rate of toluene acylation with isobutyric anhydride compared to isobutyryl chloride was found. However, only one possible acylating group of isobutyric anhydride is used for acylation reaction. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2005
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