Effect of transition metal on stability and activity of La-Ca-M-(Al)-O (M ¼ Co, Cr, Fe and Mn) perovskite oxides during partial oxidation of methane
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F17%3APU124494" target="_blank" >RIV/00216305:26620/17:PU124494 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.ijhydene.2017.06.075" target="_blank" >http://dx.doi.org/10.1016/j.ijhydene.2017.06.075</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijhydene.2017.06.075" target="_blank" >10.1016/j.ijhydene.2017.06.075</a>
Alternative languages
Result language
angličtina
Original language name
Effect of transition metal on stability and activity of La-Ca-M-(Al)-O (M ¼ Co, Cr, Fe and Mn) perovskite oxides during partial oxidation of methane
Original language description
Perovskite oxides of the type of LaxCa1-xMyAl1-yO3-d (M ¼ Co, Cr, Fe, Mn; x ¼ 0.5; y ¼ 0.7e1.0) were prepared using the polymerization methods and evaluated via N2 adsorption, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning transmission electron microscopy (STEM), energy dispersive X-ray (EDX) spectroscopy, temperature-programmed reduction by hydrogen (TPR-H2) and temperature-programmed oxidation by oxygen (TPOO2). Catalytic behaviour of the perovskite oxides during methane oxidation was studied using a tubular fixed-bed reactor. In a partial oxidation, which proceeded in two steps, there was total oxidation in the first step and CO2 and H2O were formed; in the second step, the total oxidation products oxidized methane by (dry and wet) reforming reactions to yield CO and H2. Total oxidation and the two reforming reactions proceeded on two types of an active centre formed by transition metal ions, oxygen vacancies and oxide ions. The catalytic system La-Ca-Co-Al-O which contained aluminium, decomposed in partial oxidation of methane (POM) into a composite that contained firmly bonded cobalt nanoparticles in the surface of a substrate made up of La2O3, CaO and Al2O3 which catalysed POM with a high methane conversion and hydrogen selectivity.
Czech name
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Czech description
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Classification
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
10403 - Physical chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
ISSN
0360-3199
e-ISSN
1879-3487
Volume of the periodical
42
Issue of the periodical within the volume
31
Country of publishing house
GB - UNITED KINGDOM
Number of pages
15
Pages from-to
19920-19934
UT code for WoS article
000408180900034
EID of the result in the Scopus database
2-s2.0-85021713612