Development of cobalt catalyst supported on MgO–Ln2O3 (Ln = La, Nd, Eu) mixed oxide systems for ammonia synthesis

TiO2-ZrO2 mixed-oxide membranes were prepared via polymeric sol-gel technique. The final composition is already predefined during the preparation of the sols by using the corresponding quantities of the starting alkoxides. The mixed-oxide membranes were characterized by Xray diffraction, nitrogen sorption, and field emission scanning electron microscopy as well as filtration and corrosion tests. The observed results prove the positive influence on the investigated properties by addition of a second oxide. Depending on the composition of the mixed-oxide membranes, a remarkable increase in the crystallization temperatures is demonstrated. Using mixed-oxide systems, the retardation of grain growth is confirmed.

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The correlation of various properties of thin films of MoO3 and of the mixed oxide systems MoO3-In2O3 and MoO3-SiO

Journal of Materials Science ◽

10.1007/bf01129962 ◽

1990 ◽

Vol 25 (11) ◽

pp. 4918-4928 ◽

Cited By ~ 8

Author(s):

M. Anwar ◽

C. A. Hogarth

Keyword(s):

Thin Films ◽

Mixed Oxide ◽

Oxide Systems

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Carbon-supported cobalt catalyst for ammonia synthesis: Effect of preparation procedure

Journal of Catalysis ◽

10.1016/j.jcat.2005.10.029 ◽

2006 ◽

Vol 237 (1) ◽

pp. 207-210 ◽

Cited By ~ 27

Author(s):

W RAROGPILECKA ◽

E MISKIEWICZ ◽

M MATYSZEK ◽

Z KASZKUR ◽

L KEPINSKI ◽

...

Keyword(s):

Cobalt Catalyst ◽

Ammonia Synthesis ◽

Preparation Procedure

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Efficient depolymerization of Kraft lignin to liquid fuels over an amorphous titanium-zirconium mixed oxide supported partially reduced nickel-cobalt catalyst

Bioresource Technology ◽

10.1016/j.biortech.2019.03.126 ◽

2019 ◽

Vol 284 ◽

pp. 293-301 ◽

Cited By ~ 11

Author(s):

Chaofeng Zhu ◽

Xiaomeng Dou ◽

Wenzhi Li ◽

Xiaohao Liu ◽

Qingqing Li ◽

...

Keyword(s):

Mixed Oxide ◽

Cobalt Catalyst ◽

Kraft Lignin ◽

Liquid Fuels ◽

Nickel Cobalt ◽

Titanium Zirconium

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Preparation of La-Mo-V mixed-oxide systems and their application in the direct synthesis of acetic acid

Journal of Natural Gas Chemistry ◽

10.1016/s1003-9953(08)60054-7 ◽

2008 ◽

Vol 17 (3) ◽

pp. 213-224 ◽

Cited By ~ 17

Author(s):

Hamid Reza Arandiyan ◽

Matin Parvari

Keyword(s):

Acetic Acid ◽

Mixed Oxide ◽

Direct Synthesis ◽

Oxide Systems

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Effects of Promoter on Structural and Surface Properties of Zirconium Oxide-Based Catalyst Materials

Molecules ◽

10.3390/molecules25112619 ◽

2020 ◽

Vol 25 (11) ◽

pp. 2619

Author(s):

Ekaterina S. Borovinskaya ◽

Steffen Oswald ◽

Wladimir Reschetilowski

Keyword(s):

Surface Properties ◽

Mixed Oxide ◽

Zirconium Oxide ◽

Active Sites ◽

Surface Composition ◽

One Pot ◽

Oxide Systems ◽

Catalytically Active ◽

Temperature Programmed ◽

Ternary Mixed Oxide

Ternary mixed oxide systems CuO/ZnO/ZrO2 and CuO/NiO/ZrO2 were synthesized by one-pot synthesis for a better understanding of the synthesis-property relationships of zirconium oxide-based catalyst materials. The prepared mixed oxide samples were analysed by a broad range of characterisation methods (XRD, N2-physisorption, Temperature-Programmed Ammonia Desorption (TPAD), and XPS) to examine the structural and surface properties, as well as to identify the location of the potential catalytically active sites. By XPS analysis, it could be shown that a progressive enrichment of the surface composition with copper takes place by changing from ZnO to NiO as a promoter. Thus, by addition of the second component, not only electronic but also the geometric properties of active sites, i.e., copper species distribution within the catalyst surface, can be affected in a desired way.

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