. . "3"^^ . . . "154;160" . . "Porosity of micro/mesoporous composites"@en . . . "92" . . "1387-1811" . "5"^^ . "\u010Cejka, Ji\u0159\u00ED" . . "The porous structure of a series of micro/mesoporous composite materials synthesized from a mixture of precursor solutions generally used for preparation of Beta microporous molecular sieves and pure mesoporous MCM-48 silica has been investigated. A short crystallization time of the precursor solutions results in the formation of small crystalline zeolitic domains, while after prolonged synthesis the development of larger Beta zeolitic crystallites id observed. An analysis of nitrogen isotherms based on the .alpha.s - method has revealed a relationship between the synthesis conditions and the development of both micro- and mesoporosity of these materials. With increasing the size of the zeolitic domains the mesoporosity of the composite materials decreases while the microporosity is increased. The structural features of these composites determined by XRD corroborate with the nitrogen sorption results."@en . . "492998" . . . "Zukal, Arno\u0161t" . "NL - Nizozemsko" . "Porozita mikro/mesopor\u00E9zn\u00EDch kompozit\u016F"@cs . "Fojt\u00EDkov\u00E1, P." . "The porous structure of a series of micro/mesoporous composite materials synthesized from a mixture of precursor solutions generally used for preparation of Beta microporous molecular sieves and pure mesoporous MCM-48 silica has been investigated. A short crystallization time of the precursor solutions results in the formation of small crystalline zeolitic domains, while after prolonged synthesis the development of larger Beta zeolitic crystallites id observed. An analysis of nitrogen isotherms based on the .alpha.s - method has revealed a relationship between the synthesis conditions and the development of both micro- and mesoporosity of these materials. With increasing the size of the zeolitic domains the mesoporosity of the composite materials decreases while the microporosity is increased. The structural features of these composites determined by XRD corroborate with the nitrogen sorption results." . "1-3" . "Porosity of micro/mesoporous composites" . "Microporous and Mesoporous Materials" . . . . . "\u017Dilkov\u00E1, Nad\u011B\u017Eda" . "Porosity of micro/mesoporous composites"@en . "Byla zkoum\u00E1na por\u00E9zn\u00ED struktura mikro/mesopor\u00E9zn\u00EDch kompozitn\u00EDch materi\u00E1l\u016F, je\u017E byly syntetizov\u00E1ny z prekursor\u016F pro p\u0159\u00EDpravu mikropor\u00E9zn\u00EDho molekulov\u00E9ho s\u00EDta Beta a mesopor\u00E9zn\u00ED siliky MCM-48. P\u0159i kr\u00E1tk\u00E9 dob\u011B krystalizace vznikaly jen mal\u00E9 zeolitick\u00E9 dom\u00E9ny, s prodlou\u017Een\u00EDm doby krystalizace byl pozorov\u00E1n r\u016Fst \u010D\u00E1stic zeolitu Beta. Anal\u00FDza isoterem dus\u00EDku, proveden\u00E1 pomoc\u00ED .alpha.s metody, odhalila vz\u00E1jemn\u00FD vztah mezi podm\u00EDnkami synt\u00E9zy a charakterem mikropor\u00E9zn\u00ED a mesopor\u00E9zn\u00ED struktury studovan\u00FDch materi\u00E1l\u016F. S rostouc\u00ED velikost\u00ED zeolitick\u00FDch dom\u00E9n se u p\u0159ipraven\u00FDch materi\u00E1l\u016F sni\u017Eovala mesoporozita a zvy\u0161ovala mikroporozita. Strukturn\u00ED poznatky, z\u00EDskan\u00E9 z adsorp\u010Dn\u00EDch dat, byly potvrzeny m\u011B\u0159en\u00EDm rentgenov\u00E9 difrakce."@cs . . . "7"^^ . "RIV/61388955:_____/06:00039034!RIV07-AV0-61388955" . . "Porozita mikro/mesopor\u00E9zn\u00EDch kompozit\u016F"@cs . "RIV/61388955:_____/06:00039034" . "Porosity of micro/mesoporous composites" . . "micro/mesoporous composite; nitrogen adsorption; porous structure development"@en . "Mintova, S." . "P(FT-TA/040), P(GA203/05/0197), Z(AV0Z40400503)" . "[AAC6D2F47FFE]" .