Nanosized mesoporous CuO-CeO2-TiO2 and CuO-ZrO2-TiO2 composites as catalysts for methanol decomposition: effect of modification procedure

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F21%3A00543120" target="_blank" >RIV/61388980:_____/21:00543120 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0320403" target="_blank" >http://hdl.handle.net/11104/0320403</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Nanosized mesoporous CuO-CeO2-TiO2 and CuO-ZrO2-TiO2 composites as catalysts for methanol decomposition: effect of modification procedure

Popis výsledku v původním jazyce

Mesoporous CeO2-TiO2 and ZrO2-TiO2 composites were synthesized by template-assisted hydrothermal technique. CuO was supported on the obtained materials using chemisorption-hydrolysis (CH) and incipient wetness impregnation (WI) procedures. The samples were characterized by nitrogen physisorption, XRD, UV-Vis, Raman and TPR with hydrogen. The catalytic behaviour of the obtained materials was studied in methanol decomposition as hydrogen carrier. All ternary materials exhibit higher dispersion, well developed specific surface area, pore volume and improved reducibility as compared their binary analogues and this was more pronounced for the samples prepared by the CH technique. It was assumed that the improved catalytic behavior of the composites in methanol decomposition is related to the formation of complex highly active Cu-Zr(Ce)-Ti „interface layer“ where the electron transfer is facilitated and this can be controlled by the samples composition. The appearance of maximum in most of the conversion curves indicates significant changes with the catalysts during the catalytic test.

Název v anglickém jazyce

Nanosized mesoporous CuO-CeO2-TiO2 and CuO-ZrO2-TiO2 composites as catalysts for methanol decomposition: effect of modification procedure

Popis výsledku anglicky

Mesoporous CeO2-TiO2 and ZrO2-TiO2 composites were synthesized by template-assisted hydrothermal technique. CuO was supported on the obtained materials using chemisorption-hydrolysis (CH) and incipient wetness impregnation (WI) procedures. The samples were characterized by nitrogen physisorption, XRD, UV-Vis, Raman and TPR with hydrogen. The catalytic behaviour of the obtained materials was studied in methanol decomposition as hydrogen carrier. All ternary materials exhibit higher dispersion, well developed specific surface area, pore volume and improved reducibility as compared their binary analogues and this was more pronounced for the samples prepared by the CH technique. It was assumed that the improved catalytic behavior of the composites in methanol decomposition is related to the formation of complex highly active Cu-Zr(Ce)-Ti „interface layer“ where the electron transfer is facilitated and this can be controlled by the samples composition. The appearance of maximum in most of the conversion curves indicates significant changes with the catalysts during the catalytic test.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Journal of Chemical Technology and Metallurgy

ISSN

1314-7471

e-ISSN

1314-7978

Svazek periodika

56

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

BG - Bulharská republika

Počet stran výsledku

9

Strana od-do

782-790

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85106620566