Počet záznamů: 1
Hydrodesulfurization Activities of NiMo Catalysts Supported on Mechanochemically Prepared Al‐Ce Mixed Oxides.
- 1.
SYSNO ASEP 0455543 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Hydrodesulfurization Activities of NiMo Catalysts Supported on Mechanochemically Prepared Al‐Ce Mixed Oxides. Tvůrce(i) Jirátová, Květa (UCHP-M) RID, ORCID, SAI
Spojakina, A. (BG)
Kaluža, Luděk (UCHP-M) RID, ORCID, SAI
Palcheva, R. (BG)
Balabánová, Jana (UCHP-M) RID, ORCID, SAI
Tyuliev, G. (BG)Zdroj.dok. Chinese Journal of Catalysis - ISSN 0253-9837
Roč. 37, č. 2 (2016), s. 258-267Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. CN - Čína Klíč. slova nickel ; molybdenum ; alumina Vědní obor RIV CI - Průmyslová chemie a chemické inženýrství Obor OECD Chemical process engineering CEP GAP106/11/0902 GA ČR - Grantová agentura ČR Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000371376600007 EID SCOPUS 84958181330 DOI 10.1016/S1872-2067(15)61016-6 Anotace 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 the precursor 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‐CeO2
supports significantly exceeded that of a reference NiMo6/Al2O3 catalyst prepared by impregnation method using the same precursor and with the same composition.Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2017
Počet záznamů: 1