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NiMo Catalysts Supported on Al-Based Mixed Oxide Prepared By Hydrothermal Method: Effect of Zn/Al Ratio and Addition of Silica on HDS Activity
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SYSNO ASEP 0532119 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název NiMo Catalysts Supported on Al-Based Mixed Oxide Prepared By Hydrothermal Method: Effect of Zn/Al Ratio and Addition of Silica on HDS Activity Tvůrce(i) Palcheva, R. (BG)
Kaluža, Luděk (UCHP-M) RID, ORCID, SAI
Moravčík, Jan (UCHP-M) SAI
Tyuliev, G. (BG)
Dimitrov, L. (BG)
Jirátová, Květa (UCHP-M) RID, ORCID, SAI
Avdeev, G. (BG)
Tenchev, K. (BG)
Spojakina, A. (BG)Zdroj.dok. Catalysis Letters - ISSN 1011-372X
Roč. 150, č. 11 (2020), s. 3276-3286Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova NiMo/al–znx catalysts ; silica addition ; 12-molybdophosphoric acid Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry CEP GA17-22490S GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000529122300001 EID SCOPUS 85084224433 DOI 10.1007/s10562-020-03232-w Anotace The effect of Zn/Al ratio and addition of silica to Al–Znx oxides on the structure and catalytic properties of supported NiMo catalysts in hydrodesulfurization reaction of thiophene was studied. Colloidal SiO2 was added to the Al–Znx oxides (Si/Al = 0.3 ratio) to modify textural and structural properties of NiMo catalysts. The surface area of the supports calcined at 500 °C, decreases with the increasing Zn/Al ratio, which could be due to the interaction of the Zn with the alumina, leading to formation of Zn-spinel. After impregnation of the supports with NiMo active components, the presence of Zn increases the amount of surface Mo in octahedral sites at Zn/Al = 0.21 ratio. At this ratio maximum in HDS activity of NiMo/Al–Znx samples was observed. Addition of silica to Al-Zn mixed oxide (Zn/Al = 0.16) leads to more active NiMo catalyst due to formation of more Ni(Zn)–Mo–S active species as revealed by XRD and HRTEM. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2021 Elektronická adresa http://hdl.handle.net/11104/0311280
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