Effect of Co on HDS Activity of Alumina-supported Heteropolymolybdate

The hydrotreating CoMo/γ-Al₂O₃ catalysts (12 wt% Mo and 0.7-5.0 wt% Co) have been prepared by impregnation. The CoMo catalysts obtained from Anderson heteropolyoxomolybdate (NH₄)₃[Co(OH)₆Mo₆O₁₈]·7H₂O has been investigated by nitrogen physisorption, XRD, UV-Vis DRS, FT-IR, and TPR. The results are di...

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Bibliographic Details
Published in:Catalysis letters 2010-07, Vol.137 (3-4), p.216-223
Main Authors: Palcheva, R, Spojakina, A, Jiratova, K, Kaluza, L
Format: Article
Language:English
Subjects:
1-benzothiophene
Aluminum oxide
Benzothiophene
Catalysis
Catalysts
Catalytic activity
Chemistry
Chemistry and Materials Science
Co heteropolyoxomolybdate
Cobalt
CoMo/γ-Al₂O
Exact sciences and technology
General and physical chemistry
Hydrodesulfurization
Hydrogen sulfide
Industrial Chemistry/Chemical Engineering
Organometallic Chemistry
Phase composition
Physical Chemistry
Surface physical chemistry
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Thiophene
Transitional aluminas
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Summary:The hydrotreating CoMo/γ-Al₂O₃ catalysts (12 wt% Mo and 0.7-5.0 wt% Co) have been prepared by impregnation. The CoMo catalysts obtained from Anderson heteropolyoxomolybdate (NH₄)₃[Co(OH)₆Mo₆O₁₈]·7H₂O has been investigated by nitrogen physisorption, XRD, UV-Vis DRS, FT-IR, and TPR. The results are discussed in relation to the catalytic activity for the thiophene and 1-benzothiophene reactions. The influence of Co content on both the phase composition and catalytic activity in the HDS reactions has been shown. The effect of Co on the activity in the HDS reactions depends on its previously loaded amount. It is the most pronounced with the catalyst having Co/Mo ratio equal to 0.27. Graphical Abstract [graphic removed]
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-010-0361-9