Influence of the support on the catalytic properties of Keggin type heteropolyacids supported on niobia according to two different methodologies: evaluation of isopropanol dehydration and Friedel-Crafts alkylation reaction

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18450%2F18%3A50014755" target="_blank" >RIV/62690094:18450/18:50014755 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s11144-018-1349-5" target="_blank" >https://link.springer.com/article/10.1007/s11144-018-1349-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11144-018-1349-5" target="_blank" >10.1007/s11144-018-1349-5</a>

Result language

angličtina

Original language name

Influence of the support on the catalytic properties of Keggin type heteropolyacids supported on niobia according to two different methodologies: evaluation of isopropanol dehydration and Friedel-Crafts alkylation reaction

Original language description

In this study, Keggin type heteropolyacids (HPW) supported on niobia were prepared following two different methodologies, including the incipient wetness impregnation technique, and using water as a polar solvent. In methodology I, the support was impregnated after calcination at 300 A degrees C, with HPW concentrations equivalent to 30 and 50% of coverage, while in methodology II the support, without pretreatment, was impregnated with HPW concentrations equivalent to 30 and 50% of coverage and further calcined at 300 A degrees C. The catalysts were characterized by X-ray diffraction, nitrogen adsorption, chemical analysis by optical emission spectrometry from plasma, FT-IR, FT-Raman, P-31 MAS NMR, and acidity determination by catalytic decomposition of isopropanol. It was found that the best catalysts, after lixiviation tests, were the ones with 50% of HPW content produced through methodology II (50MIIL300). After identification of the best catalyst in the reaction of dehydration of isopropanol, we studied the reaction of anisole with benzyl alcohol and benzyl chloride and the results obtained were comparable to other catalysts reported in literature.

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

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OECD FORD branch

10401 - Organic chemistry

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

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

Name of the periodical

REACTION KINETICS MECHANISMS AND CATALYSIS

ISSN

1878-5190

e-ISSN

—

Volume of the periodical

124

Issue of the periodical within the volume

1

Country of publishing house

DE - GERMANY

Number of pages

18

Pages from-to

317-334

UT code for WoS article

000430556600022

EID of the result in the Scopus database

2-s2.0-85040943067