Thermal solid–solid interactions and catalytic properties of V2O5/Al2O3 system treated with Li2O and Ag2O

Shaheen, W.M.

doi:10.1016/j.mseb.2006.08.056

Cited by 12 publications

(3 citation statements)

References 16 publications

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“…From the above, the mechanism of H 2 O 2 decomposition on (CuO-MoO 3 ) catalysts can be summarized as follows [7,13] 6-There is no measurable catalytic activity of solids preheated at 1000 o C because of formation of inactive oxides and/ or sintering process of active phases.…”

Section: Catalytic Activity Measurement Of Pure An Mixed (Cuo-moo 3 )mentioning

confidence: 99%

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Characterization and catalytic properties of a series of CuO-MoO3 mixed oxides

Shaheen¹,

Selim²

2017

Egypt. J. Chem.

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A SERIES of single and mixed oxides of CuO-MoO 3 system were prepared by thermal treatment of pure and mixed basic copper carbonate and ammonium molybdate tetrahydrate solids. The thermal behavior of the pure and binary salts has been studied using thermal analysis (TG-DTA) technique. The thermal products were characterized using the X-ray diffraction analysis. The results revealed that, pure solids decomposed to CuO, MoO 3 and Cu 2 O phases at 250, 340 and 1000 o C respectively. Solid-solid interaction takes place between single oxides forming different phases of copper molybdate depending on treatment temperature and mixture composition. The degree of cystallinty of detected phases affected by calcination temperature solids and composition. The catalytic activity of single and binary oxides was tested in decomposition of hydrogen peroxide as a model reaction. The catalytic activity of mixed oxides was found to be higher than that of single oxides at different treatment temperature. The mechanism of decomposition reaction over the prepared oxides was discussed.

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Section: Catalytic Activity Measurement Of Pure An Mixed (Cuo-moo 3 )mentioning

confidence: 99%

“…The compound formed may have new physicochemical and catalytic properties better than that of the pure components. Therefore, the catalytic activities of mixed catalysts were often much higher than the activities of mechanical mixtures of the same composition [7][8].…”

Section: Introductionmentioning

confidence: 99%

Characterization and catalytic properties of a series of CuO-MoO3 mixed oxides

Shaheen¹,

Selim²

2017

Egypt. J. Chem.

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“…These changes can be normally accompanied by possible changes in surface and catalytic activity of the doped catalytic systems. Other physicochemical properties, such as thermal stability and oxidation state of solid catalysts could be also modified by the doping process [17]. On the other hand, among various metal oxides, molybdates play an important role in technological applications such as catalysts, optical materials, electrode materials, and many other applications [18,19].…”

Section: Introductionmentioning

confidence: 99%

Thermal solid–solid interactions and physicochemical properties of Co3O4/MoO3 system treated with Al2O3

Shaheen¹,

Maksod²

2009

Journal of Alloys and Compounds

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Structural and optical properties of electron‐beam evaporated Al₂O₃‐doped V₂O₅ thin films for various applications

Ali

Hakeem

2010

Physica Status Solidi (a)

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The solid‐state reaction method was used to prepare tablets of (V2O5)100−x (Al2O3)x with x = 5, 10, 15, 20 wt. %. Thin films of Al2O3‐doped V2O5 were deposited onto glass substrates using an electron‐beam evaporation technique. The influence of doping and annealing temperature on the structural and optical characteristics has been investigated in detail. Optical properties of the films were studied extensively in the wavelength range 200–2500 nm from the measurements of the optical transmittance (T) and optical reflectance (R). It was observed that the optical properties such as transmittance, reflectance, optical bandgap, and refractive index of (V2O5)100−x (Al2O3)x films were strongly affected by the ratio of Al2O3 and the temperature of annealing.

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Thermal solid–solid interactions and catalytic properties of V2O5/Al2O3 system treated with Li2O and Ag2O

Cited by 12 publications

References 16 publications

Characterization and catalytic properties of a series of CuO-MoO3 mixed oxides

Characterization and catalytic properties of a series of CuO-MoO3 mixed oxides

Thermal solid–solid interactions and physicochemical properties of Co3O4/MoO3 system treated with Al2O3

Structural and optical properties of electron‐beam evaporated Al₂O₃‐doped V₂O₅ thin films for various applications

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Thermal solid–solid interactions and catalytic properties of V2O5/Al2O3 system treated with Li2O and Ag2O

Cited by 12 publications

References 16 publications

Characterization and catalytic properties of a series of CuO-MoO3 mixed oxides

Characterization and catalytic properties of a series of CuO-MoO3 mixed oxides

Thermal solid–solid interactions and physicochemical properties of Co3O4/MoO3 system treated with Al2O3

Structural and optical properties of electron‐beam evaporated Al2O3‐doped V2O5 thin films for various applications

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Product

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Structural and optical properties of electron‐beam evaporated Al₂O₃‐doped V₂O₅ thin films for various applications