Titanium impregnated borosilicate zeolites for epoxidation catalysis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F15%3A00443285" target="_blank" >RIV/61388955:_____/15:00443285 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.micromeso.2015.03.015" target="_blank" >http://dx.doi.org/10.1016/j.micromeso.2015.03.015</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.micromeso.2015.03.015" target="_blank" >10.1016/j.micromeso.2015.03.015</a>

Result language
angličtina
Original language name
Titanium impregnated borosilicate zeolites for epoxidation catalysis
Original language description
Titanium containing molecular sieves, known as effective epoxidation catalysts, can be prepared either by direct synthesis or by post-synthesis impregnation. Controlled incorporation of titanium during the post-synthesis modification can be achieved whentitanium atoms are inserted into the framework positions previously occupied by heteroatoms such as boron. In this contribution, we report the post-synthesis incorporation of titanium into borosilicates SSZ-24, SSZ-33, SSZ-42 and CIT-5. Parent borosilicates were deboronated using an HCl solution and subsequently impregnated with titanium (IV) butoxide or titanium (IV) chloride. The character of the titanium active sites was investigated using DR-UV/Vis spectroscopy showing that the titanium was incorporated into the framework positions with tetrahedral coordination. In some samples, other titanium species were present as well. The prepared Ti-SSZ-33 provides high yield of cyclooctene oxide 28.3% (after 240 min at 60 °C in acetonitrile,
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Project
<a href="/en/project/GAP106%2F11%2F0819" target="_blank" >GAP106/11/0819: Understanding and controlling the location of acid sites in zeolites for their catalytic applications</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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