Hydrodeoxygenation of stearic acid and tall oil fatty acids over Ni-alumina catalysts: Influence of reaction parameters and kinetic modelling

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F17%3A39912064" target="_blank" >RIV/00216275:25310/17:39912064 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.cej.2017.01.117" target="_blank" >http://dx.doi.org/10.1016/j.cej.2017.01.117</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cej.2017.01.117" target="_blank" >10.1016/j.cej.2017.01.117</a>

Result language

angličtina

Original language name

Hydrodeoxygenation of stearic acid and tall oil fatty acids over Ni-alumina catalysts: Influence of reaction parameters and kinetic modelling

Original language description

Kinetics in the hydrodeoxygenation of stearic acid was investigated over Ni-gamma-Al2O3 catalyst. The main variables were catalyst prereduction mode, reaction atmosphere and hydrogen pressure in the total pressure range of 7-30 bar. The results revealed that high conversion, 99% in 360 min and high selectivity to heptadecane, 97% were achieved at 300 degrees C under 30 bar total pressure. The yield of an intermediate hydrogenation product, stearyl alcohol increased with increasing hydrogen pressure as expected. Higher reaction rates and conversion levels were also achieved with the prereduced catalyst and carrying out the reaction in the presence of hydrogen. As a comparison to stearic acid, hydrodeoxygenation of tall oil fatty acids, an industrial feedstock was successfully demonstrated with Ni-gamma-Al2O3 under the same conditions. A kinetic model including the pressure effect was derived and applied for data with Ni-gamma-Al2O3 as well as for Pd/C, Ni-H-Y-80 and Ni/SiO2 catalysts. The model described well the kinetic data.

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

20400 - Chemical engineering

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

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

Name of the periodical

Chemical Engineering Journal

ISSN

1385-8947

e-ISSN

—

Volume of the periodical

316

Issue of the periodical within the volume

May

Country of publishing house

CH - SWITZERLAND

Number of pages

9

Pages from-to

401-409

UT code for WoS article

000398985200043

EID of the result in the Scopus database

2-s2.0-85012065420