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Highly selective synthesis of campholenic aldehyde over Ti-MWW catalysts by α-pinene oxide isomerization
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SYSNO ASEP 0493777 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Highly selective synthesis of campholenic aldehyde over Ti-MWW catalysts by α-pinene oxide isomerization Tvůrce(i) Pitínová-Štekrová, Martina (UFCH-W)
Eliášová, P. (CZ)
Weissenberger, T. (DE)
Shamzhy, Mariya (UFCH-W) RID, ORCID
Musilová, Zuzana (UFCH-W)
Čejka, Jiří (UFCH-W) RID, ORCID, SAIZdroj.dok. Catalysis Science &Technology. - : Royal Society of Chemistry - ISSN 2044-4753
Roč. 8, č. 18 (2018), s. 4690-4701Poč.str. 12 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova aldehydes ; Catalyst selectivit ; α-pinene oxide Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry CEP GA17-01440S GA ČR - Grantová agentura ČR Institucionální podpora UFCH-W - RVO:61388955 UT WOS 000448144600013 EID SCOPUS 85053733647 DOI 10.1039/C8CY01231H Anotace Campholenic aldehyde is a highly valuable fine chemical that can be obtained by multistep synthesis from monoterpene α-pinene isolated from turpentine oil. Therefore, economical and environmentally benign synthesis of this aldehyde is of great interest. In this study, different titanosilicates were prepared and tested in selective campholenic aldehyde synthesis via isomerization of α-pinene oxide. Titanosilicates with MWW zeolitic structure were synthesized directly and compared with Ti impregnated SBA-15 and commercial titanium silicalite-1. The catalysts were thoroughly characterized and compared in terms of their catalytic activity and selectivity toward the desired aldehyde in isomerization reactions performed either in toluene as a solvent at 70 °C or in N,N-dimethylacetamide at 140 °C. Ti-MWW catalysts showed very high catalytic activity with total conversion of α-pinene oxide. The highest selectivity to campholenic aldehyde, being 96% at the total conversion, was reached over the Ti-MCM-22 catalyst in toluene at 70 °C. This result substantially exceeds any other results published so far in the literature. The great catalytic performance of Ti-MCM-22 was attributed to the combination of the presence of isolated tetrahedrally coordinated Ti species, which act as crucial Lewis acid centres, the absence of undesired Brønsted acidity, and the MWW architecture that facilitates the formation of the target aldehyde.
Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2019
Počet záznamů: 1