Surface and catalytic investigations of CuO–Cr2O3/Al2O3 system

El-Shobaky, G.A.; El-Khouly, Sahar M.; Ghozza, A.M.; Mohamed, Ghada M.

doi:10.1016/j.apcata.2006.01.022

Cited by 31 publications

(20 citation statements)

References 30 publications

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“…The general behavior observed was expected since, once the oxide species cover the support, they form aggregates and may form mixed oxide species, which have lower surface areas [14]. Although the catalyst with 25 mass% loading showed the lowest specific surface area of all catalysts prepared, it has a surface area considerably higher than the ones observed for other copper containing catalysts [17,18], and for the pure metal oxides [19].…”

Section: Textural and Structural Characterizationmentioning

confidence: 61%

Acidic Characterization of Copper Oxide and Niobium Pentoxide Supported on Silica–Alumina

et al. 2007

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Copper oxide and niobium pentoxide were supported on silica-alumina with 2, 5, 10, 15 and 25 mass% loadings and 1:1 mass ratio of CuO:Nb 2 O 5 . XRD and BET measurements confirmed that monolayer coverage is reached with loadings between 5-10 mass% (~308 m 2 g -1 ). The DRIFTS spectra of pyridine adsorbed catalysts showed bands associated with Brönsted, Lewis and a combination of both acidic sites. Thermal analysis and liquid phase microcalorimetry provided the parameters for the best catalyst (10 mass%), which has the highest number of acidic sites (0.38 mmol g -1 ) and enthalpies of interaction with pyridine for Brönsted and Lewis sites (DH 1 = -107.5 and DH 2 = -64.4 kJ mol -1 , respectively).

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Section: Textural and Structural Characterizationmentioning

confidence: 61%

Acidic Characterization of Copper Oxide and Niobium Pentoxide Supported on Silica–Alumina

et al. 2007

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“…So, the percentage decrease of the pressure of the reacting gases at a given time interval determines the percentage conversion of the catalytic reaction at that time. The saturation vapor pressure of CO at À196°C being 160 Torr makes its liquefaction at that pressure improbable under the employed conditions (2 Torr) [44].…”

Section: Techniquesmentioning

confidence: 99%

Effect of CeO2-doping on surface and catalytic properties of CuO–ZnO system

El-Shobaky

Hassan

Yehia

et al. 2010

Journal of Non-Crystalline Solids

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“…The % decrease in pressure at a given time determines the percentage conversion of the catalytic reaction at that time. The saturation vapour pressure of CO at −196 • C being 160 Torr makes its liquefaction at that pressure improbable under the employed conditions (2 Torr) as shown by El-Shobaky et al [43].…”

Section: Measurements Of Different Surface Characteristicsmentioning

confidence: 87%