Steam reforming of ethanol over Co3O4/CeO2 catalysts prepared by different methods

Wang, H.; Ye, J.L.; Liu, Y.; Li, Y.D.; Qin, Yunan

doi:10.1016/j.cattod.2006.10.012

Cited by 110 publications

(47 citation statements)

References 41 publications

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“…Among the Co,Ce/HAp-H catalysts, the higher hydrogen yield (3.49 mol H 2 /mol C 2 H 5 OH) ensures the catalyst containing 5 wt% Co. With further increase in Co content to 7.5 wt%, the hydrogen yield is decreased. Similar results concerning the effect of cobalt spinel loading was reported by Wang et al 9 . On the other hand, Co,Ce/HAp-S catalysts also show a high and comparable with the Co,Ce/HAp-H catalysts ethanol conversion (Fig.…”

supporting

confidence: 90%

“…So for, SRE has been investigated over a different noble (Rh, Pt, Ru, Pd, Ir) 3, 4 and base metals (Ni, Cu, Co, Ni-Co, Ni-Cu) 5-7 and over oxide catalysts such as MgO, Al 2 O 3 , ZnO, TiO 2 , CeO 2 , V 2 O 5 or others 8, 9 . Noble based catalysts exhibit high catalytic activity over wide range of temperatures (400-600°C) in terms of hydrogen yield and ethanol conversion.…”

Section: Introductionmentioning

confidence: 99%

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Catalytic activity of cobalt and cerium catalysts supported on calcium hydroxyapatite in ethanol steam reforming

Dobosz

Hull

Zawadzki

2016

Polish Journal of Chemical Technology

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In this paper, Co,Ce/Ca 10 (PO 4 ) 6 (OH) 2 catalysts with various cobalt loadings for steam reforming of ethanol (SRE) were prepared by microwave-assisted hydrothermal and sol-gel methods, and characterized by XRD, TEM, TPR-H 2 , N 2 adsorption-desorption measurements and cyclohexanol (CHOL) decomposition tests. High ethanol conversion (close to 100%) was obtained for the catalysts prepared by both methods but these ones prepared under hydrothermal conditions (HAp-H) ensured higher hydrogen yield (3.49 mol H 2 /mol C 2 H 5 OH) as well as higher amount of hydrogen formed (up to 70%) under reaction conditions. The superior performance of 5Co,10Ce/HAp-H catalyst is thought to be due to a combination of factors, including increased reducibility and oxygen mobility, higher density of basic sites on its surface, and improved textural properties. The results also show a signifi cant effect of cobalt loading on catalysts effi ciency in hydrogen production: the higher H 2 yield exhibit catalysts with lower cobalt content, regardless of the used synthesis method.

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supporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Catalytic activity of cobalt and cerium catalysts supported on calcium hydroxyapatite in ethanol steam reforming

Dobosz

Hull

Zawadzki

2016

Polish Journal of Chemical Technology

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“…The intensity of the peak at 2θ = 33 for Co 3 O 4 is higher for the Co 20 /γ-Al 2 O 3 -CeO 2 sample compared with the Co 10 /γ-Al 2 O 3 -CeO 2 sample. This suggests that the cobalt oxide on the Co 20 /γ-Al 2 O 3 -CeO 2 surface has a higher crystallinity and larger particle size and also that the Co 3 O 4 is well dispersed on the Co 10 /γ-Al 2 O 3 -CeO 2 surface (Soykal et al, 2012a;Wang et al, 2007).…”

Section: Characterization Of the Catalystsmentioning

confidence: 99%

Catalytic oxidation of volatile organic compounds (n-hexane, benzene, toluene, o-xylene) promoted by cobalt catalysts supported on γ-Al2O3-CeO2

Balzer

Probst

Drago

et al. 2014

Braz. J. Chem. Eng.

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-Cobalt catalysts supported on γ-alumina, ceria and γ-alumina-ceria, with 10 or 20%wt of cobalt load, prepared by the wet impregnation method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), field emission transmission electron microscopy (FETEM), N 2 adsorptiondesorption isotherms (BET/BJH methods), energy-dispersive X-ray spectroscopy (EDX), X-ray photoemission spectroscopy (XPS), O 2 -chemisorption and temperature programmed reduction (TPR) were used to promote the oxidation of volatile organic compounds (n-hexane, benzene, toluene and o-xylene). For a range of low temperatures (50-350 °C), the activity of the catalysts with a higher cobalt load (20% wt) was greater than that of the catalysts with a lower cobalt load (10% wt). The Co/γ-Al 2 O 3 -CeO 2 catalytic systems presented the best performances. The results obtained in the characterization suggest that the higher catalytic activity of the Co 20 /γ-Al 2 O 3 -CeO 2 catalyst may be attributed to the higher metal content and amount of oxygen vacancies, as well as the effects of the interaction between the cobalt and the alumina and cerium oxides.

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“…A relatively systematic investigation of the effect of supports was performed by Llorca and his coworkers [65]. [66][67][68][69]. The introduction of Ca creates oxygen vacancies, which is beneficial for the enhancement of oxygen mobility [70,71].…”

Section: Catalyst Optimization Strategiesmentioning

confidence: 99%

Catalytic Hydrogen Production from Bioethanol

Song

2017

Hydrogen Production Technologies

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Steam reforming of ethanol over Co3O4/CeO2 catalysts prepared by different methods

Cited by 110 publications

References 41 publications

Catalytic activity of cobalt and cerium catalysts supported on calcium hydroxyapatite in ethanol steam reforming

Catalytic activity of cobalt and cerium catalysts supported on calcium hydroxyapatite in ethanol steam reforming

Catalytic oxidation of volatile organic compounds (n-hexane, benzene, toluene, o-xylene) promoted by cobalt catalysts supported on γ-Al2O3-CeO2

Catalytic Hydrogen Production from Bioethanol

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