Low-Temperature Catalytic Performance of Ni-Cu/Al2O3 Catalysts for Gasoline Reforming to Produce Hydrogen Applied in Spark Ignition Engines

Tuấn, Lê Anh; Luong, Nguyen The; Ishihara, Keiichi N.

doi:10.3390/catal6030045

Cited by 16 publications

(8 citation statements)

References 57 publications

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“…The reduction of Ni-Cu alloy is evident from the high temperature peak (>873 K) corresponding to the spinel phase which is the form for strong metal–support interaction. Such a strong reduction peak at high temperature justifies greater metal dispersion . Similar peaks were obtained in the case of Ni-Cu/LMMO prepared by the IP technique.…”

Section: Resultssupporting

confidence: 76%

Ni–Cu and Ni–Co Supported on La–Mg Based Metal Oxides Prepared by Coprecipitation and Impregnation for Superior Hydrogen Production via Steam Reforming of Glycerol

Shejale

Yadav

2018

Ind. Eng. Chem. Res.

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Catalytic steam reforming of glycerol, a byproduct of the biodiesel industry, is a candidate technique for sustainable hydrogen (H 2 ) production. Steam reforming of glycerol to produce hydrogen is a potential method to produce hydrogen from biosources. The current work focuses on the synthesis and comparison of two novel catalysts, viz., Ni-Cu/La 2 O 3 -MgO and Ni-Co/La 2 O 3 -MgO, prepared by coprecipitation (CP) and impregnation (IP) techniques. The synthesis procedures were evaluated in terms of glycerol conversion, H 2 yield, and time on stream (TOS) studies. The results so obtained revealed that the CP method was effective for producing superior H 2 quantity owing to better metal anchorage with support and high surface area. Further, both the catalysts prepared by CP exhibited satisfactory activity and stability. On optimization, both the catalysts reported enhanced H 2 concentration with Ni-Cu/La 2 O 3 -MgO reporting the highest H 2 of 96.1 mol % at 773 K and S/C of 9 mol/mol. In addition, both the catalysts demonstrated multicycle durability, thus making them potential materials for large scale application. Finally, a catalytic reaction mechanism was suggested.

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Section: Resultssupporting

confidence: 76%

Ni–Cu and Ni–Co Supported on La–Mg Based Metal Oxides Prepared by Coprecipitation and Impregnation for Superior Hydrogen Production via Steam Reforming of Glycerol

Shejale

Yadav

2018

Ind. Eng. Chem. Res.

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“…In the first step, Ni 2 O 3 was reduced to NiO at 550 °C and the second step involved the reduction of NiO to Ni at 800 °C. The peak appearing at 975 °C was attributed to the reduction of very small metal particles and mixed metal–support oxides. − The addition of Ni to alumina promoted the reduction of the Mo species.…”

Section: Resultsmentioning

confidence: 99%

Cryochemical Approach To Develop Catalysts for Intensification of the Hydrodesulfurization Reaction

Saha

Bhattacharjee

Sandilya

et al. 2019

Ind. Eng. Chem. Res.

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catalysts were synthesized both by conventional and cryochemical coprecipitation methods, and their performances for hydrodesulfurization of a model fuel have been explored. The catalysts were characterized by Brunauer, Emmett, and Teller analysis, X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, atomic force microscopy, temperature programmed desorption, Xray photoelectron spectroscopy, and Fourier transform infrared. Analyses showed that catalysts prepared by the cryochemical technique have higher dispersion, surface area, and chemical homogeneity compared to the conventionally prepared ones. Hydrodesulphurization of a model fuel, composed of dodecane with a definite concentration of dibenzothiophene as a sulfur compound, was carried out in batch mode using in situ generated hydrogen obtained by ethanol reforming. Experimental results showed that Ni− Mo/Al 2 O 3 catalyst is superior to Co−Mo/Al 2 O 3 for the reaction, and the cryochemical catalyst performed better than the conventional catalyst at all temperatures. The absence of any mass transfer resistance, external and internal is established, and the reaction is intrinsically kinetically controlled. The endothermicity of the reaction was proven by thermodynamic analysis.

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“…The reaction ( 5) is strongly endothermic, and almost all the reactants are consumed [17]. The carbon dioxide methanation reaction accomplishes reaction (5) in analyzing range of temperatures:…”

Section: Thermodynamic Modelmentioning

confidence: 99%

“…This is also the main problem during the conventional reforming process of hydrocarbons. In the literature, several publications about carbon deposition formation in reforming processes can be found, for example, during steam reforming [12], steam reforming of methanol [13], carbon dioxide reforming [14,15], reforming of biogas [16], and gasoline reforming [17]. Furthermore, there is a lack of information in the literature regarding carbon deposition formation during the reforming process of APG.…”

Section: Introductionmentioning

confidence: 99%

A Thermodynamic Analysis of Heavy Hydrocarbons Reforming for Solid Oxide Fuel Cell Application as a Part of Hybrid Energy Systems

Kaczmarczyk

Gurgul

2021

Energies

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A thermodynamical analysis of steam reforming of Associated Petroleum Gas (APG) was conducted in the presented research. The reforming process of heavy hydrocarbons for small scale power generation is a complex issue. One of the main issues is that a set of undesired chemical reactions deposit solid carbon and, consequently, block the reactor’s catalytic property. The experimental investigation is crucial to design an APG reforming reactor. However, a numerical simulation is a key tool to design a safe operating condition. Designing the next generation of reactors requires a complex coupling of mathematical models, kinetics, and thermodynamic analysis. In practice, the thermodynamic analysis should be applied in each control volume to assure realistic results. This is not easy to apply in practice since both thermodynamic analysis and CFD modeling can be time-consuming. In this paper, the authors suggest using a mathematical formalism called Parametric Equation Formalism to calculate the equilibrium composition. The novelty lies in the mathematical approach in which any complex system at equilibrium can be reduced to the problem of solving one non-linear equation at a time. This approach allows implementing a thermodynamic analysis easily into CFD models to assure the reasonability of obtained results and can be used for research and development of solid oxide fuel cells as a part of hybrid energy systems.

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Low-Temperature Catalytic Performance of Ni-Cu/Al2O3 Catalysts for Gasoline Reforming to Produce Hydrogen Applied in Spark Ignition Engines

Cited by 16 publications

References 57 publications

Ni–Cu and Ni–Co Supported on La–Mg Based Metal Oxides Prepared by Coprecipitation and Impregnation for Superior Hydrogen Production via Steam Reforming of Glycerol

Ni–Cu and Ni–Co Supported on La–Mg Based Metal Oxides Prepared by Coprecipitation and Impregnation for Superior Hydrogen Production via Steam Reforming of Glycerol

Cryochemical Approach To Develop Catalysts for Intensification of the Hydrodesulfurization Reaction

A Thermodynamic Analysis of Heavy Hydrocarbons Reforming for Solid Oxide Fuel Cell Application as a Part of Hybrid Energy Systems

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