Statistical evaluation of the mutual relations of properties of Mg/Fe hydrotalcites and mixed oxides as transesterification catalysts

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F18%3A39912571" target="_blank" >RIV/00216275:25310/18:39912571 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.clay.2017.12.039" target="_blank" >http://dx.doi.org/10.1016/j.clay.2017.12.039</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.clay.2017.12.039" target="_blank" >10.1016/j.clay.2017.12.039</a>

Result language
angličtina
Original language name
Statistical evaluation of the mutual relations of properties of Mg/Fe hydrotalcites and mixed oxides as transesterification catalysts
Original language description
The Mg-Fe mixed oxides with different Mg/Fe molar ratio (from 1:1 to 8:1) and temperature pre-treatment (0-900 degrees C) were prepared from layered double hydroxides (LDH) as precursors. The LDH were synthesized by co-precipitation method. The formed mixed oxides (calcined LDH) were tested within the transesterification of rapeseed oil including the leaching of magnesium and iron to the liquid products. All synthesized materials were characterized by several techniques such as XRD, thermogravimetric analysis, specific surface area and SEM. The mutual relations between material properties were found by statistical analysis. Moreover, the real molar ratio of Mg/Fe was determined by two independent methods (atomic absorption spectroscopy and X-ray fluorescence-XRF) with nearly the same results. It is possible to use only faster and cheaper XRF. It was found, that mixed oxides were formed at Mg/Fe molar ratio from 2 to 6 and at temperature between 400 and 600 degrees C. The highest yield of oil was achieved with Mg/Fe molar ratio 5:1 calcined at 500 degrees C. Moreover, statistical evaluation with the aim to find the relations between properties of synthesized material was carried out.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering

Project
<a href="/en/project/GA15-21817S" target="_blank" >GA15-21817S: Analysis of the structure/activity relationship of Mg/Al, Ca/Al and Zn/Al mixed oxides in aldol condensation and transesterification reactions</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

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