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Structural Characterization of Al_2O_3 and CeO_2 Supported Ni, Co Loaded Ceramic Monolithic Catalysts

100%
Guldal N., Baykara S.
Acta Physica Polonica A
|
2014
|
vol. 125
|
issue 2
281-284
EN
This paper discusses structural characterizations of monolithic catalysts prepared by incorporating Ni and Co supported over a porous alumina and ceria layer by using respective nitrates and H_2PtCl_6 as precursors. Monolithic catalysts were synthesized by dip-coating of 400 cpsi cordierite ceramic monolithic pieces cut in 20 × 13 mm^2 (L× D) into appropriate solutions of metals, followed by calcination in air at 800C for 4 h. Phases of catalysts were characterized with X-ray diffraction. Morphological analysis and elemental composition were determined by scanning electron microscope and energy dispersive spectroscopy. The specific surface area analysis have been studied using the Brunauer-Emmett-Teller method. Metal contents were determined by inductively coupled plasma optical emission spectrometry.
2
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Preparation and Characterization of Co-Mo/γ-Al_2O_3, Ni-Mo/γ-Al_2O_3 and (Co/Ni)-Mo/γ-Al_2O_3 Metal Oxides by Sol-Gel Process

100%
Figen H., Baykara S.
Acta Physica Polonica A
|
2012
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vol. 121
|
issue 1
224-226
EN
In this study, Co-Mo/γ-Al_2O_3, Ni-Mo/γ-Al_2O_3 and (Co/Ni)-Mo/γ-Al_2O_3 metal oxides have been prepared by the sol-gel process using citric acid and calcined at 800C for 5 h. Phases of synthesized materials were characterized with X-ray diffraction. Morphological analysis and elemental composition of oxides were determined by scanning electron microscope and energy dispersion spectroscopy. Surface analyses of the metal oxides have been studied using the Brunner-Emmett-Teller surface analyzer. Effects of substitution of cobalt and nickel together on the physical properties of the synthesized oxides were also investigated.
3
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Preparation and Characterization of LaMoO_3, La_xSr_{y}V_{z}O_3 and La_{x}Sr_{y}Mo_{z}O_3 Perovskite Type Oxides by the Sol-Gel Citrate Method

81%
Figen H., Guldal N., Baykara S.
Acta Physica Polonica A
|
2014
|
vol. 125
|
issue 2
278-280
EN
In this study, LaMoO_3, La_{x}Sr_{y}V_{z}O_3 and La_{x}Sr_{y}Mo_{z}O_3 perovskites have been prepared by the sol-gel citrate method and calcined at 1000C for 5 h. Ammonium carbonate and citric acid were used as complexing agent and solvent. Phases of synthesized materials were characterized with X-ray diffraction. Morphological analysis and elemental composition of perovskites were determined by scanning electron microscope and energy dispersive spectroscopy. The surface analyses of the solids have been studied using the Brunauer-Emmett-Teller surface analyzer. The effects of substitution of x, y, and z on the physical properties of the synthesized perovskites were also investigated.
4
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Effects of Cobalt and Nickel Substitution οn Physical Properties of Perovskite Type Oxides Prepared by the Sol-Gel Citrate Method

81%
Yarbay R., Figen H., Baykara S.
Acta Physica Polonica A
|
2012
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vol. 121
|
issue 1
44-46
EN
In this study, lanthanum and Co-, Ni-based oxides at different compositions were prepared by the sol-gel citrate method. Ammonium carbonate and citric acid were used as complexing agent and solvent. The oxides were characterized by scanning electron microscopy-energy-dispersive spectroscopy, X-ray diffraction, and the Brunauer-Emmett-Teller method. Surface area analysis was carried out and the effects of substitution of cobalt and nickel on the physical properties of the synthesized oxides were investigated.
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