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Hydrodesulfurization NiMo Catalysts over Gamma-Alumina Prepared Mechanochemically.

SYSNO ASEP	0491065
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Hydrodesulfurization NiMo Catalysts over Gamma-Alumina Prepared Mechanochemically.
Author(s)	Kaluža, Luděk (UCHP-M)_{RID, ORCID, SAI} Jirátová, Květa (UCHP-M)_{RID, ORCID, SAI} Tyuliev, G. (BG) Gulková, Daniela (UCHP-M)_{RID, ORCID, SAI} Balabánová, Jana (UCHP-M)_{RID, ORCID, SAI} Palcheva, R. (BG) Koštejn, Martin (UCHP-M)_{RID, SAI, ORCID} Spojakina, A. (BG)
Source Title	Reaction Kinetics Mechanism and Catalysis. - : Springer - ISSN 1878-5190 Roč. 125, č. 1 (2018), s. 319-337
Number of pages	19 s.
Language	eng - English
Country	NL - Netherlands
Keywords	hydrodesulfurization ; NiMo catalyst ; NiMo polyoxocomplexes
Subject RIV	CF - Physical ; Theoretical Chemistry
OECD category	Physical chemistry
R&D Projects	GA17-22490S GA ČR - Czech Science Foundation (CSF)
Institutional support	UCHP-M - RVO:67985858
UT WOS	000443009300023
EID SCOPUS	85048820756
DOI	10.1007/s11144-018-1436-7
Annotation	The novel ˠ-Al2O3 synthesis by mechanochemical activation of aluminum nitrate hydrate was applied to prepare hydrodesulfurization (HDS) NiMo catalysts. Impregnation techniques using the complex made by dissolution of nitrilotriacetic acid (NTA), ammonium heptamolybdate and nickel nitrate and the Anderson-type heteropolyoxymolybdate ((NH4)4Ni(OH)6Mo6O18) complex were compared with conventional impregnation using subsequent deposition of ammonium heptamolybdate (first) and nickel nitrate (second) with calcination in between. Properties of the support and HDS catalysts were studied by N2 physisorption, Raman spectroscopy, H2 temperature-programmed reduction (H2-TPR), O2 chemisorption and X-ray photoelectron spectroscopy (XPS). Both catalysts prepared from the complexes were at least 1.5-fold more active in the HDS reaction of 1-benzothiophene (360 °C and 1.6 MPa) than the catalyst prepared conventionally. The most promising preparation method for gaining highly active HDS catalyst on the studied ˠ-Al2O3 was the deposition of (NH4)4Ni(OH)6Mo6O18. This catalyst exhibited about 1.9 and 1.4 higher HDS activity in comparison to the conventionally prepared NiMo and reference commercial NiMo counterparts, respectively.
Workplace	Institute of Chemical Process Fundamentals
Contact	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Year of Publishing	2019

Number of the records: 1