Highly selective synthesis of campholenic aldehyde over Ti- MWW catalysts by alpha-pinene oxide isomerization

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10386101" target="_blank" >RIV/00216208:11310/18:10386101 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1039/c8cy01231h" target="_blank" >https://doi.org/10.1039/c8cy01231h</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c8cy01231h" target="_blank" >10.1039/c8cy01231h</a>

Result language

angličtina

Original language name

Highly selective synthesis of campholenic aldehyde over Ti- MWW catalysts by alpha-pinene oxide isomerization

Original language description

Campholenic aldehyde is a highly valuable fine chemical that can be obtained by multistep synthesis from monoterpene -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 -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 degrees C or in N,N-dimethylacetamide at 140 degrees C. Ti-MWW catalysts showed very high catalytic activity with total conversion of -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 degrees 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 BrOnsted acidity, and the MWW architecture that facilitates the formation of the target aldehyde.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10404 - Polymer science

Project

<a href="/en/project/GA17-01440S" target="_blank" >GA17-01440S: Engineering of advanced catalysts from modular parts</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Catalysis: Science and Technology

ISSN

2044-4753

e-ISSN

—

Volume of the periodical

8

Issue of the periodical within the volume

18

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

4690-4701

UT code for WoS article

000448144600013

EID of the result in the Scopus database

2-s2.0-85053733647