Aldol condensation of benzaldehyde and heptanal: a comparative study of laboratory and industrially prepared Mg-Al mixed oxides

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F18%3A43916130" target="_blank" >RIV/60461373:22310/18:43916130 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22810/18:43916130

Result on the web

<a href="https://onlinelibrary.wiley.com/doi/pdf/10.1002/jctb.5336" target="_blank" >https://onlinelibrary.wiley.com/doi/pdf/10.1002/jctb.5336</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/jctb.5336" target="_blank" >10.1002/jctb.5336</a>

Result language

angličtina

Original language name

Aldol condensation of benzaldehyde and heptanal: a comparative study of laboratory and industrially prepared Mg-Al mixed oxides

Original language description

Several layered double hydroxides (with Mg:Al ratio varying from 2:1 to 4:1) were prepd. by a co-pptn. method at const. pH value. The activity of lab. prepd. samples was compared with that of industrially prepd. layered double hydroxides with the same Mg/Al ratio in aldol condensation of benzaldehyde with heptanal. Characterization of all solid catalysts was performed using different techniques (ICP-MS, thermogravimetry, X-ray diffraction, DRIFT spectroscopy, nitrogen physisorption method, SEM). Acid-base properties of prepd. materials were investigated using ammonia (carbon dioxide, resp.) temp. programmed desorption. Heptanal conversion and selectivity to two main products, i.e., 2-pentylcinnamylaldehyde (jasmine aldehyde) and 2-pentylnon-2-enal, were monitored. All catalysts resulted in heptanal conversions higher than 95%. The highest selectivity to jasmine aldehyde (66% at 70% heptanal conversion, 46% theor. yield) was obtained using ESM 3:1 catalyst (100°, heptanal:benzaldehyde = 1:2 M, solvent-free synthesis).

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

10401 - Organic chemistry

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2018

Confidentiality

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

Name of the periodical

Journal of Chemical Technology and Biotechnology

ISSN

0268-2575

e-ISSN

—

Volume of the periodical

93

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

166-173

UT code for WoS article

000417508100021

EID of the result in the Scopus database

2-s2.0-85021347482