NDLI: Influence of the composition and morphology of nanosized transition metal sulfides prepared using the Anderson-type heteropoly compounds [X(OH)$_{6}$Mo$_{6}$O$_{18}$]$^{ n−}$ (X = Co, Ni, Mn, Zn) and [Co$_{2}$Mo$_{10}$O$_{38}$H$_{4}$]$

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Influence of the composition and morphology of nanosized transition metal sulfides prepared using the Anderson-type heteropoly compounds [X(OH)$_{6}$Mo$_{6}$O$_{18}$]$^{ n−}$ (X = Co, Ni, Mn, Zn) and [Co$_{2}$Mo$_{10}$O$_{38}$H$_{4}$]$_{6−}$ on their catalytic properties

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Influence of the composition and morphology of nanosized transition metal sulfides prepared using the Anderson-type heteropoly compounds [X(OH)$_{6}$Mo$_{6}$O$_{18}$]$^{ n−}$ (X = Co, Ni, Mn, Zn) and [Co$_{2}$Mo$_{10}$O$_{38}$H$_{4}$]$_{6−}$ on their catalytic properties

Content Provider	Springer Nature Link
Author	Nikul’shin, P. A. Mozhaev, A. V. Ishutenko, D. I. Minaev, P. P. Lyashenko, A. I. Pimerzin, A. A.
Copyright Year	2012
Abstract	Using the Anderson-type heteropoly compounds (HPCs) [X(OH)$_{6}$Mo$_{6}$O$_{18}$]$_{ n− }$ (X = Co, Ni, Mn, Zn) and [Co$_{2}$Mo$_{10}$O$_{38}$H$_{4}$]$_{6−}$ and cobalt (or nickel) nitrate, XMo/Al$_{2}$O$_{3}$ and Co(Ni)-XMo/Al$_{2}$O$_{3}$ catalysts were prepared. The catalysts were studied by low-temperature nitrogen adsorption, X-ray diffraction, and high-resolution transmission electron microscopy. The average length of the active-phase particles of the catalysts was 3.5 to 3.9 nm, and the average number of MoS$_{2}$ layers in a packet was 1.4 to 2.1. The catalytic properties of the samples, which were estimated in dibenzothiophene (DBT) hydrodesulfurization and in the hydrotreating of the diesel fraction, are considerably dependent upon both the type and composition of the HPC, and the nature of the applied promoter (Ni or Co). As compared to the Ni-promoted catalysts, the Co-promoted samples exhibit a higher desulfurization activity, whereas the hydrogenation ability of the Ni-XMo/Al$_{2}$O$_{3}$ catalysts surpasses that of the Co-XMo/Al$_{2}$O$_{3}$ ones. The catalytic properties depend on the morphology of the nanostructured active phase. With a growing number of MoS$_{2}$ layers in the packet of the catalysts’ active phase, the DBT hydrodesulfurization rate constants for both the direct desulfurization route and the preliminary hydrogenation rote rise linearly and the selectivity falls linearly for the hydrogenation route. The selectivity of Ni-XMo/Al$_{2}$O$_{3}$ decreases to a greater extent than that of Co-XMo/Al$_{2}$O$_{3}$. The dependences of the catalytic properties on the morphology of the catalysts’ active phase are consistent with the “dynamic” model of the functioning of the active sites of transition metal sulfides.
Starting Page	620
Ending Page	631
Page Count	12
File Format	PDF
ISSN	00231584
Journal	Kinetics and Catalysis
Volume Number	53
Issue Number	5
e-ISSN	16083210
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2012-09-27
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Catalysis Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis Modeling and Simulation Computer Science Applications

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Heteropoly Complexes Na$_{0.5}$Cs$_{2 − x }$[H$_{0.5 − x }$M x II X$^{III}$(OH)$_{6}$Mo$_{6}$O$_{18}$] · 7−8H$_{2}$O (M$^{II}$ = Fe, Mn; X$^{III}$ = Cr, Al)

Synthesis and Crystal Structure of Potassium–Nickel Heteropoly Hexatungstonickelate (II) K$_{3}$Ni$_{0,5}$[Ni(OH)$_{6}$W$_{6}$O$_{18}$]·12H$_{2}$O with Anderson-Type Anion and Potassium–Nickel Paratungstate B K$_{6}$Ni$_{2}$[W$_{12}$O$_{40}$(OH)$_{2}$]·22H$_{2}$O

Moessbauer resonance and magnetochemical studies of heteropoly complexes Na$_{0.5}$Cs$_{2−x }$[H$_{0.5−x }$Fe$_{x}$X(OH)$_{6}$Mo$_{6}$O$_{18}$] · (7–8)H$_{2}$O

Synthesis and Structure of a Novel Polyoxomolybdate Lanthanide Complex: [Er$_{2}$(H$_{2}$O)$_{14}$Cr(OH)$_{6}$Mo$_{6}$O$_{18}$][Cr(OH)$_{6}$Mo$_{6}$O$_{18}$] · 14H$_{2}$O

One Dimensional Face-to-Face Stacking of Anderson–Evans [Cr(OH)$_{6}$Mo$_{6}$O$_{18}$]$^{3−}$ Polyoxometalate Anion: Synthesis, Structure, and Physical Properties of (BEDT-TTF)$_{4}$[Cr(OH)$_{6}$Mo$_{6}$O$_{18}$]⋅2H$_{2}$O

Use of (NH$_{4}$)$_{4}$[Ni(OH)$_{6}$Mo$_{6}$O$_{18}$]·nH$_{2}$O heteropoly compound in fabrication of sulfide catalysts for hydropurification of diesel fractions

Phase formation in the Ni$^{2+}$-WO 4 2− -H$^{+}$-H$_{2}$O system (Z = 1.00). Crystal structure and properties of sodium heteropolyhexatunsten nickelate(2+) Na$_{4}$[Ni(OH)$_{6}$W$_{6}$O$_{18}$]·16H$_{2}$O

Intercluster porous nanocomposites from combination of [AlO$_{4}$Al$_{12}$(OH)$_{24}$(H$_{2}$O)$_{12}$]$^{7+}$ cation and Anderson-type [Al$_{1−x }$Cr$_{ x }$Mo$_{6}$O$_{24}$H$_{6}$]$^{3−}$ anion: XRD, TG-DTA, SEM-EDAX and EPR studies

Sodium heteropolyhexamolybdenumnickelate (II) Na$_{4}$[Ni(OH)$_{6}$Mo$_{6}$O$_{18}$]•16H$_{2}$O with an anderson anion: Synthesis and crystal structure

Influence of the composition and morphology of nanosized transition metal sulfides prepared using the Anderson-type heteropoly compounds [X(OH)$_{6}$Mo$_{6}$O$_{18}$]$^{ n−}$ (X = Co, Ni, Mn, Zn) and [Co$_{2}$Mo$_{10}$O$_{38}$H$_{4}$]$_{6−}$ on their catalytic properties

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