Solvent-free, improved synthesis of pure bixbyite phase of iron and manganese mixed oxides as low-cost, potential oxygen carrier for chemical looping with oxygen uncoupling

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F17%3A00474954" target="_blank" >RIV/61388980:_____/17:00474954 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1515/pac-2016-1127" target="_blank" >http://dx.doi.org/10.1515/pac-2016-1127</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/pac-2016-1127" target="_blank" >10.1515/pac-2016-1127</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Solvent-free, improved synthesis of pure bixbyite phase of iron and manganese mixed oxides as low-cost, potential oxygen carrier for chemical looping with oxygen uncoupling

Popis výsledku v původním jazyce

Chemical looping with oxygen uncoupling (CLOU) is the tendency of releasing gaseous oxygen of an oxygen carrier upon heating, which is the key property for the efficient and cleaner combustion of solid fuels for their wide exploitation for thermal power applications. The solvent-free, improved synthesis method was developed for the synthesis of pure bixbyite, FeMnO3 (Ia3-, a=b=c=0.94 nm) as a low-cost, oxygen carrier by exposing of the abundantly available precursors (Fe3O4 and MnO) under inert- or reduction- atmosphere followed by air at 900°C. The bixbyite FeMnO3 showed the enhanced, stable multi-cycle CLOU performance than that of the physical mixture and it is converted into FeMn2O4 after the complete exhaustion of reactive oxygen under CLOU conditions. FeMnO3 showed the uniform elemental distribution of Fe, Mn and O, which facilitate the regeneration in air upon heating for multi-cycle performance. 3.2 wt.% of reactive oxygen can be obtained compared to the mass of FeMnO3 which is almost equal to the theoretical value under CLOU conditions. The lattice of FeMnO3 is altered linearly above 100°C with the increase of temperature, however, without the decomposition of the bixbyite phase and it was reinstated virtually upon cooling in air.

Název v anglickém jazyce

Solvent-free, improved synthesis of pure bixbyite phase of iron and manganese mixed oxides as low-cost, potential oxygen carrier for chemical looping with oxygen uncoupling

Popis výsledku anglicky

Chemical looping with oxygen uncoupling (CLOU) is the tendency of releasing gaseous oxygen of an oxygen carrier upon heating, which is the key property for the efficient and cleaner combustion of solid fuels for their wide exploitation for thermal power applications. The solvent-free, improved synthesis method was developed for the synthesis of pure bixbyite, FeMnO3 (Ia3-, a=b=c=0.94 nm) as a low-cost, oxygen carrier by exposing of the abundantly available precursors (Fe3O4 and MnO) under inert- or reduction- atmosphere followed by air at 900°C. The bixbyite FeMnO3 showed the enhanced, stable multi-cycle CLOU performance than that of the physical mixture and it is converted into FeMn2O4 after the complete exhaustion of reactive oxygen under CLOU conditions. FeMnO3 showed the uniform elemental distribution of Fe, Mn and O, which facilitate the regeneration in air upon heating for multi-cycle performance. 3.2 wt.% of reactive oxygen can be obtained compared to the mass of FeMnO3 which is almost equal to the theoretical value under CLOU conditions. The lattice of FeMnO3 is altered linearly above 100°C with the increase of temperature, however, without the decomposition of the bixbyite phase and it was reinstated virtually upon cooling in air.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Pure and Applied Chemistry

ISSN

0033-4545

e-ISSN

—

Svazek periodika

89

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

511-521

Kód UT WoS článku

000403319800012

EID výsledku v databázi Scopus

2-s2.0-85019357010