Hydrodesulfurization Activities of NiMo Catalysts Supported on Mechanochemically Prepared Al‐Ce Mixed Oxides.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F16%3A00455543" target="_blank" >RIV/67985858:_____/16:00455543 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/S1872-2067(15)61016-6" target="_blank" >http://dx.doi.org/10.1016/S1872-2067(15)61016-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/S1872-2067(15)61016-6" target="_blank" >10.1016/S1872-2067(15)61016-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hydrodesulfurization Activities of NiMo Catalysts Supported on Mechanochemically Prepared Al‐Ce Mixed Oxides.

Popis výsledku v původním jazyce

Al2O3‐CeO2 supports containing 1–10 wt% Ce were prepared mechanochemically by milling aluminum and/or cerium nitrates with NH4HCO3. Heteropolymolybdate, (NH4)4NiMo6O24, was used as thenprecursor of the Ni and Mo to prepare NiMo6/Al2O3‐CeO2 components in catalysts by impregnation method. The physicochemical properties of the catalysts were determined using chemical analysis, X‐ray diffraction, temperature‐programmed H2 reduction, temperature‐programmed NH3 desorption, X‐ray photoelectron spectroscopy (XPS), and the Brunauer–Emmett–Teller method. The catalyst acidity decreased with increasing Ce concentration in the support. XPS showed that the NiS/MoS ratio decreased two‐fold for the Ce‐modified alumina support. NiMo6/Al2O3, which had the highest acidity, showed the highest activity in hydrodesulfurization of 1‐benzothiophene (normalized per weight of catalyst). The concentration of surface MoOxSy species (which is equal to the concentration of Mo5+) gradually decreased to zero for catalysts with Ce concentrations 10 wt%. However, the activities of all the catalysts prepared mechanochemically from Al2O3 and Al2O3‐CeO2nsupports significantly exceeded that of a reference NiMo6/Al2O3 catalyst prepared by impregnation method using the same precursor and with the same composition.

Název v anglickém jazyce

Hydrodesulfurization Activities of NiMo Catalysts Supported on Mechanochemically Prepared Al‐Ce Mixed Oxides.

Popis výsledku anglicky

Al2O3‐CeO2 supports containing 1–10 wt% Ce were prepared mechanochemically by milling aluminum and/or cerium nitrates with NH4HCO3. Heteropolymolybdate, (NH4)4NiMo6O24, was used as thenprecursor of the Ni and Mo to prepare NiMo6/Al2O3‐CeO2 components in catalysts by impregnation method. The physicochemical properties of the catalysts were determined using chemical analysis, X‐ray diffraction, temperature‐programmed H2 reduction, temperature‐programmed NH3 desorption, X‐ray photoelectron spectroscopy (XPS), and the Brunauer–Emmett–Teller method. The catalyst acidity decreased with increasing Ce concentration in the support. XPS showed that the NiS/MoS ratio decreased two‐fold for the Ce‐modified alumina support. NiMo6/Al2O3, which had the highest acidity, showed the highest activity in hydrodesulfurization of 1‐benzothiophene (normalized per weight of catalyst). The concentration of surface MoOxSy species (which is equal to the concentration of Mo5+) gradually decreased to zero for catalysts with Ce concentrations 10 wt%. However, the activities of all the catalysts prepared mechanochemically from Al2O3 and Al2O3‐CeO2nsupports significantly exceeded that of a reference NiMo6/Al2O3 catalyst prepared by impregnation method using the same precursor and with the same composition.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/GAP106%2F11%2F0902" target="_blank" >GAP106/11/0902: Nekonvenční složení a příprava sulfidických hydrorafinačních katalyzátorů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Chinese Journal of Catalysis

ISSN

0253-9837

e-ISSN

—

Svazek periodika

37

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CN - Čínská lidová republika

Počet stran výsledku

10

Strana od-do

258-267

Kód UT WoS článku

000371376600007

EID výsledku v databázi Scopus

2-s2.0-84958181330