About: Synthesis of isomorphously substituted extra-large pore UTL zeolites

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Description	The influence of various synthesis parameters (e.g. gel composition, pH of the reaction mixture, duration of crystallization) on the phase selectivity of zeolite formation in germanosilicate reaction medium in the presence of different three-valent heteroatoms (B, Al, Ga, Fe or In) was systematically studied and compared with a controlled crystallization from pure germanosilicate media. The boundary conditions of the formation of the pure phase of isomorphously substituted extra-large pore zeolite UTL were established. In the presence of 1 mol% of the respective heteroelement in the initial gel the pH borders of UTL formation are found to be 7.5–11.9 for Fe-, 7.8–12.0 for B-, 8.2–11.0 for Ga-, 11.0–12.0 for In-, and 11.3–12.0 for Al-containing reaction mixtures. The maximum concentration of heteroelements in the reaction mixture for the successful synthesis of UTL is 1.5 mol% for Al and Ga, 6 mol% for In, and 13 mol% for B. The size of UTL crystals decreases in the order Al- > In- > Ga- > Fe- B-UTL. The nature of isomorphous substituent influences the textural properties (pore size distribution) of the respective UTL zeolites. The influence of various synthesis parameters (e.g. gel composition, pH of the reaction mixture, duration of crystallization) on the phase selectivity of zeolite formation in germanosilicate reaction medium in the presence of different three-valent heteroatoms (B, Al, Ga, Fe or In) was systematically studied and compared with a controlled crystallization from pure germanosilicate media. The boundary conditions of the formation of the pure phase of isomorphously substituted extra-large pore zeolite UTL were established. In the presence of 1 mol% of the respective heteroelement in the initial gel the pH borders of UTL formation are found to be 7.5–11.9 for Fe-, 7.8–12.0 for B-, 8.2–11.0 for Ga-, 11.0–12.0 for In-, and 11.3–12.0 for Al-containing reaction mixtures. The maximum concentration of heteroelements in the reaction mixture for the successful synthesis of UTL is 1.5 mol% for Al and Ga, 6 mol% for In, and 13 mol% for B. The size of UTL crystals decreases in the order Al- > In- > Ga- > Fe- B-UTL. The nature of isomorphous substituent influences the textural properties (pore size distribution) of the respective UTL zeolites. (en)
Title	Synthesis of isomorphously substituted extra-large pore UTL zeolites Synthesis of isomorphously substituted extra-large pore UTL zeolites (en)
skos:prefLabel	Synthesis of isomorphously substituted extra-large pore UTL zeolites Synthesis of isomorphously substituted extra-large pore UTL zeolites (en)
skos:notation	RIV/61388955:_____/12:00378723!RIV13-GA0-61388955
http://linked.open...avai/predkladatel	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GA203/08/0604), P(GAP106/11/0819)
http://linked.open...iv/cisloPeriodika	31
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Zukal, Arnošt Čejka, Jiří Chlubná, Pavla
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...dnocenehoVysledku	172967
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/12:00378723
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	synthesis; UTL zeolites; influence (en)
http://linked.open.../riv/klicoveSlovo	influence synthesis UTL zeolites
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[3B9E1605C5AD]
http://linked.open...i/riv/nazevZdroje	Journal of Materials Chemistry
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	10 (xsd:int)
http://linked.open...vavai/riv/projekt	Understanding and controlling the location of acid sites in zeolites for their catalytic applications Advanced molecular sieves for capture and storage of CO2 and H2
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	22
http://linked.open...iv/tvurceVysledku	Zukal, Arnošt Čejka, Jiří Shamzy, M. V. Shvets, O. V. Yaremov, P. S. Chlubná, Pavla Hartmann, M. Marthala, V. R. Opanasenko, V. Sarkisyan, L. G.
http://linked.open...ain/vavai/riv/wos	000306479600046
issn	0959-9428
number of pages	11 (xsd:int)
http://bibframe.org/vocab/doi	10.1039/C2JM31725G
is http://linked.open...avai/riv/vysledek of	Synthesis of isomorphously substituted extra-large pore UTL zeolites

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