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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA15-21817S" target="_blank" >GA15-21817S: Analýza vztahu mezi strukturou/basicitou Mg/Al, Ca/Al a Zn/Al směsných oxidů a jejich aktivitou v aldol kondenzaci a transesterifikaci</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Applied Clay Science

ISSN

0169-1317

e-ISSN

—

Svazek periodika

154

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

28-35

Kód UT WoS článku

000424722900004

EID výsledku v databázi Scopus

2-s2.0-85040637244