. "RIV/61388955:_____/04:00101103" . . "79;86" . "On the Role of Zeolite Structure and Acidity in Toluene Acylation with Isobutyric Acid Derivatives"@en . "0926-860X" . "577922" . "Klis\u00E1kov\u00E1, Jana" . . "Applied Catalysis" . "Vliv struktury r\u016Fzn\u00FDch typ\u016F zeolit\u016F a jejich kyselosti na acylaci toluenu deriv\u00E1ty isobutyrov\u00E9 kyseliny"@cs . . "Katalytick\u00E1 aktivita zeolit\u016F r\u016Fzn\u00FDch strukturn\u00EDch typ\u016F s rozd\u00EDlnou koncentrac\u00ED kysel\u00FDch center byla studov\u00E1na na acyla\u010Dn\u00ED reakci toluenu. Acylace toluenu s deriv\u00E1ty isobutyrov\u00E9 kyseliny prob\u00EDhala v kapaln\u00E9 f\u00E1zi. Nejvy\u0161\u0161\u00ED konverze isobutyryl chloridu nebo anhydridu kyseliny isobutyrov\u00E9 bylo dosa\u017Eeno na zeolitu beta a zeolitu Y se st\u0159edn\u00ED koncentrac\u00ED kysel\u00FDch center. Obecn\u011B konverze acyla\u010Dn\u00EDch \u010Dinidel roste s rostouc\u00EDm rozm\u011Brem p\u00F3r\u016F zeolit\u016F a dimenz\u00ED kan\u00E1lov\u00E9ho syst\u00E9mu. \u0160irokopor\u00E9zn\u00ED zeolity s trojrozm\u011Brnou kan\u00E1lovou strukturou umo\u017E\u0148uj\u00ED snadn\u011Bj\u0161\u00ED desorpci a transport rozm\u011Brn\u00E9ho isopropyltolyl ketonu. Bylo zji\u0161t\u011Bno, \u017Ee vy\u0161\u0161\u00ED po\u010D\u00E1te\u010Dn\u00ED rychlosti acylace je dosa\u017Eeno s anhydridem kyseliny isobutyrov\u00E9."@cs . . "\u010Cerven\u00FD, L." . "toluene acylation; isopropyltolyl ketone; zeolite catalysts"@en . . . "On the Role of Zeolite Structure and Acidity in Toluene Acylation with Isobutyric Acid Derivatives" . "[4EB2FB78694C]" . . "2"^^ . "3"^^ . "Vliv struktury r\u016Fzn\u00FDch typ\u016F zeolit\u016F a jejich kyselosti na acylaci toluenu deriv\u00E1ty isobutyrov\u00E9 kyseliny"@cs . . "P(GA203/03/0804), P(KJB4040402), Z(AV0Z4040901), Z(MSM 223100001)" . "NL - Nizozemsko" . . . "\u010Cejka, Ji\u0159\u00ED" . "RIV/61388955:_____/04:00101103!RIV/2005/AV0/A54005/N" . . . . "1" . . . . "On the Role of Zeolite Structure and Acidity in Toluene Acylation with Isobutyric Acid Derivatives"@en . "On the Role of Zeolite Structure and Acidity in Toluene Acylation with Isobutyric Acid Derivatives" . "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." . . . "272" . . "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."@en . "8"^^ .