About: Synthesis and catalytic properties of titanium containing extra-large pore zeolite CIT-5

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Titanium containing extra-large pore zeolite CIT-5 (IZA code: CFI) was successfully prepared by direct synthesis using Cab-O-Sil M5 and titanium(IV) butoxide in the presence of LiOH. N-Methylsparteinium hydroxide was used as a structure directing agent. The product crystallized into thin plate crystals with an approximate size of 20 x 5 x 0.2 mu m. The lowest achieved Si/Ti ratio was 23. The necessary duration of hydrothermal synthesis increased with increasing concentration of Ti in the reaction mixture from 11 days (Si/Ti = 63 in product) to 17 days (Si/Ti = 36) at 155 degrees C. Prepared Ti-CFI samples exhibit BET surface areas in the range of 308-346 m(2)/g and micropore volumes of 0.094-0.097 cm(3)/g. CFI possesses extralarge pores (14-ring, 7.2 x 7.5 A) accessible for bulky molecules, therefore, Ti-CFI is a useful catalyst for epoxidation of double bonds in bulky molecules used in perfumery and pharmacy. The Ti-CFI samples proved to be catalytically active in epoxidation of 1-octene, cyclooctene, cv-pinene, and norbornene with hydrogen peroxide as oxidation agent. Titanium containing extra-large pore zeolite CIT-5 (IZA code: CFI) was successfully prepared by direct synthesis using Cab-O-Sil M5 and titanium(IV) butoxide in the presence of LiOH. N-Methylsparteinium hydroxide was used as a structure directing agent. The product crystallized into thin plate crystals with an approximate size of 20 x 5 x 0.2 mu m. The lowest achieved Si/Ti ratio was 23. The necessary duration of hydrothermal synthesis increased with increasing concentration of Ti in the reaction mixture from 11 days (Si/Ti = 63 in product) to 17 days (Si/Ti = 36) at 155 degrees C. Prepared Ti-CFI samples exhibit BET surface areas in the range of 308-346 m(2)/g and micropore volumes of 0.094-0.097 cm(3)/g. CFI possesses extralarge pores (14-ring, 7.2 x 7.5 A) accessible for bulky molecules, therefore, Ti-CFI is a useful catalyst for epoxidation of double bonds in bulky molecules used in perfumery and pharmacy. The Ti-CFI samples proved to be catalytically active in epoxidation of 1-octene, cyclooctene, cv-pinene, and norbornene with hydrogen peroxide as oxidation agent. (en)
Title	Synthesis and catalytic properties of titanium containing extra-large pore zeolite CIT-5 Synthesis and catalytic properties of titanium containing extra-large pore zeolite CIT-5 (en)
skos:prefLabel	Synthesis and catalytic properties of titanium containing extra-large pore zeolite CIT-5 Synthesis and catalytic properties of titanium containing extra-large pore zeolite CIT-5 (en)
skos:notation	RIV/61388955:_____/14:00427877!RIV15-GA0-61388955
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GBP106/12/G015)
http://linked.open...iv/cisloPeriodika	MAY 2014
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Přech, Jan Kubů, Martin Čejka, Jiří
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	48964
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/14:00427877
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	zeolite CIT-5; titanosilicate; epoxidation (en)
http://linked.open.../riv/klicoveSlovo	zeolite CIT-5 epoxidation titanosilicate
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[31D89801729D]
http://linked.open...i/riv/nazevZdroje	Catalysis Today
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Intelligent design of nanoporous adsorbents and catalysts
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	227
http://linked.open...iv/tvurceVysledku	Kubů, Martin Přech, Jan Čejka, Jiří
http://linked.open...ain/vavai/riv/wos	000332412900013
issn	0920-5861
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.cattod.2014.01.003

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