Nickel phosphide catalyst for autothermal reforming of surrogate gasoline fuel

Liu, Lei; Hong, Liang

doi:10.1002/aic.12505

Cited by 17 publications

(9 citation statements)

References 35 publications

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“…60 Liu et al suggested that Ce 4þ ions on the surface of support can oxidize the deposited coke to form Ce 3þ ions in the presence of NiP nanoparticles, leading to the formation of oxygen vacancies. 61 da Silva et al examined the effect of support reducibility on the stability of ESR and concluded that the high oxygen/OH mobility of the CeO 2 support contributed to the high stability and reactivity of the catalyst. 62 Laosiripojana et al proposed that enhanced redox properties of doped ceria prevented carbon deposition by oxidizing the adsorbed surface hydrocarbons on nickel surface.…”

Section: Nickel Catalystsmentioning

confidence: 98%

Enhanced oxygen mobility and reactivity for ethanol steam reforming

Zhang

et al. 2011

AIChE Journal

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This article describes a strategy for increasing oxygen storage capacity (OSC) of ethanol steam reforming (ESR) catalysts. Sintering and carbon deposition are major defects of nickel-based catalysts for ESR; tuning oxygen mobility (OM) of CeO 2 -based supports can overcome these drawbacks and promote H 2 production. We have successfully increased OSC and OM by adding Mg into the lattice of Ni/CeO 2 to promote H 2 production in ESR. The insertion of Mg into the CeO 2 lattice efficiently promotes the reduction of Ce 4þ according to X-ray powder diffraction (XRD) and temperature-programmed reduction (TPR) analysis. Mg-modified Ni/CeO 2 catalysts have larger OSC and smaller nickel crystallite size compared with bare Ni/CeO 2 . The optimal Mg addition is 7 mol % (Ni/7MgCe) with the best OM. We also present evidence indicating that Mg addition significantly promotes ethanol conversion and H 2 production in ESR, and that Ni/7MgCe yields the best performance due to the high OM of the support. These Mg-modified catalysts also produce less carbon deposition compared with Ni/ CeO 2 , and the amount of deposited carbon decreases with increasing Mg addition. Ni/ 7MgCe has the best resistance to carbon deposition owing to the excellent OM.

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Section: Nickel Catalystsmentioning

confidence: 98%

Enhanced oxygen mobility and reactivity for ethanol steam reforming

Zhang

et al. 2011

AIChE Journal

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“…Hence, the effect of CeO 2 addition to Pt/Al 2 O 3 catalyst is only the improvement of initial conversion and elimination of coke formation. Liu et al proposed that the Ce 4+ ions on the CeO 2 surface can oxidize the coke formed while being reduced to Ce 3+ . Laosiripojana et al suggested that the strengthened redox property of doped CeO 2 suppressed coke formation by oxidizing the hydrocarbons on metal surface and then contributed to the higher catalytic stability .…”

Section: Discussionmentioning

confidence: 99%

Effects of Ga doping on Pt/CeO₂‐Al₂O₃ catalysts for propane dehydrogenation

et al. 2016

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This paper describes catalytic consequencesThis paper describes catalytic consequences of Pt/CeO 2 -Al 2 O 3 catalysts promoted with Ga species for propane dehydrogenation. A series of PtGa/CeO 2 -Al 2 O 3 catalysts were prepared by a sequential impregnation method. The as-prepared catalysts were characterized employing N 2 adsorption-desorption, X-ray diffrtaction, temperature programmed reduction, O 2 volumetric chemisorption, H 2 -O 2 titration, and transmission electron microscopy. We have shown that Ga 31 cations are incorporated into the cubic fluorite structure of CeO 2 , enhancing both lattice oxygen storage capacity and surface oxygen mobility. The enhanced reducibility of CeO 2 is indicative of higher capability to eliminate the coke deposition and thus is beneficial to the improvement of catalytic stability. Density functional theory calculations confirm that the addition of Ga is prone to improve propylene desorption and greatly suppress deep dehydrogenation and the following coke formation. The catalytic performance shows a strong dependence on the content of Ga addition. The optimal loading content of Ga is 3 wt %, which results in the maximal propylene selectivity together with the best catalytic stability against coke accumulation.

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“…The reduction property of nitrogen monoxide was also investigated over the Cu/(active carbon) catalyst, which copper component was loaded onto the active carbon by the electroless plating [22,23]. Furthermore, the reforming property of hydrocarbon (n-octane) over the Ni/CeO 2 catalyst, which deposited a nickel component onto cerium oxide by the electroless plating, was investigated [24]. However, all catalysts prepared by these researches were granular type, and were not a structured (plate) type that can be used in the wall-type reaction system.…”

Section: Introductionmentioning

confidence: 99%

Structured Catalysts Prepared by Electroless Plating Technique onto a Metal Substrate, for a Wall-Type Hydrogen Production System

Fukuhara

Igarashi

2012

Catal Surv Asia

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This article reviews our works on the structured catalysts for a wall-type hydrogen production system including methanol steam reforming (MSR), CO shift reaction (CO SR) and methanol decomposition (MD). The structured catalysts were copper-based, palladium-based and nickel-based catalysts. Such a series of structured catalysts were prepared by the electroless plating technique that is a novel method for preparing a structured type catalyst onto a metal-substrate. The copper-based catalyst exhibited high performance for MSR and CO SR, the palladium-based catalyst high for MSR, and the nickelbased catalyst high for MD. The catalytic properties of these catalysts were affected by the difference of the plating condition and the pretreatment condition prior to the reaction. In the copper-based catalyst, the reforming and shift activities were enhanced by the oxidation treatment. One of the factors of such activity enhancement by the oxidation was thought to be in close proximity existence of copper and zinc atoms. A lot of monodentate-type formate species having high reactivity was formed on the oxidized catalyst, which would be correlated to the activity enhancement. In the palladium-based catalyst, the reforming activity was improved by the continuous reduction treatment followed by the oxidation. Such continuous pretreatment formed the PdZn alloy species thought to be a reforming site in the surface layer. The decomposition performance of the nickel-based catalyst depended on the ratio of the crystallite size of nickel particles to that of aluminum particles. The electronic influence of zinc and phosphorous components incorporated in the plated layer contributed to the improvement of the selectivity of product.

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Nickel phosphide catalyst for autothermal reforming of surrogate gasoline fuel

Cited by 17 publications

References 35 publications

Enhanced oxygen mobility and reactivity for ethanol steam reforming

Enhanced oxygen mobility and reactivity for ethanol steam reforming

Effects of Ga doping on Pt/CeO₂‐Al₂O₃ catalysts for propane dehydrogenation

Structured Catalysts Prepared by Electroless Plating Technique onto a Metal Substrate, for a Wall-Type Hydrogen Production System

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Nickel phosphide catalyst for autothermal reforming of surrogate gasoline fuel

Cited by 17 publications

References 35 publications

Enhanced oxygen mobility and reactivity for ethanol steam reforming

Enhanced oxygen mobility and reactivity for ethanol steam reforming

Effects of Ga doping on Pt/CeO2‐Al2O3 catalysts for propane dehydrogenation

Structured Catalysts Prepared by Electroless Plating Technique onto a Metal Substrate, for a Wall-Type Hydrogen Production System

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Effects of Ga doping on Pt/CeO₂‐Al₂O₃ catalysts for propane dehydrogenation