The long-term catalytic performance of mixed oxides in fixed-bed reactors in transesterification

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F19%3A39914518" target="_blank" >RIV/00216275:25310/19:39914518 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0960148119307566?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0960148119307566?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.renene.2019.05.083" target="_blank" >10.1016/j.renene.2019.05.083</a>

Result language

angličtina

Original language name

The long-term catalytic performance of mixed oxides in fixed-bed reactors in transesterification

Original language description

Mg-Al and Mg-Fe mixed oxides with a constant molar ratio (3:1) were tested in the transesterification of rapeseed oil with methanol in a fixed-bed reactor. The mixed oxides were obtained from parent layered double hydroxides by calcination at 500 degrees C. The synthesized materials were characterized by several experimental techniques such as XRD, TG-MS, TPD-CO2, DRIFT and SEM. The transesterification was carried out at different weight hour space velocities (WHSVs; 1, 2 and 3 h(-1)) and different reaction temperatures (115, 150 and 200&apos;C), with every parameter tested for 32 h. Moreover, the stability of the catalysts was tested by the determination of the metal content in the reaction mixture. The ester yield increases with decreasing WHSV and with increasing reaction temperature. The Mg-Al mixed oxides were more active for all WHSVs and for temperatures of 115 degrees C and 150 degrees C due to the lower crystallite size and particularly higher concentration of basic species. For the reaction temperature of 200&apos;C, the catalyst activity was almost the same for both catalysts. A long-term catalytic test (300 h) for the verification of the catalyst lifetime and stability was also carried out with insignificant leaching of metals. (C) 2019 Elsevier Ltd. All rights reserved.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

20704 - Energy and fuels

Project

<a href="/en/project/GA19-00669S" target="_blank" >GA19-00669S: The relations between activity and structure of Mg-Al/Fe mixed oxides including post-treatment for transesterification and Guerbet reaction</a><br>

Continuities

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

Publication year

2019

Confidentiality

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

Name of the periodical

Renewable Energy

ISSN

0960-1481

e-ISSN

—

Volume of the periodical

143

Issue of the periodical within the volume

December

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

1259-1267

UT code for WoS article

000482686100022

EID of the result in the Scopus database

2-s2.0-85067023620