Ni supported Ce0.9Sm0.1O2-δ nanowires: An efficient catalyst for ethanol steam reforming for hydrogen production

Rodrigues, Thenner Silva; Moura, Arthur B. L. de; Silva, Felipe A. e; Candido, Eduardo Guimarães; Silva, Anderson G. M. da; Oliveira, Daniela C. de; Quiroz, Jhon; Camargo, Pedro Henrique Cury de; Bergamaschi, Vanderlei S.; Ferreira, João Cardoso; Linardi, Marcelo; Fonseca, Fábio C.

doi:10.1016/j.fuel.2018.10.053

Cited by 50 publications

(31 citation statements)

References 68 publications

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“…Apart from the nature and composition of the mixed oxides, the different preparation methods of these mixed oxides have been studied to achieve high hydrogen yields , , , , , , . The sol‐gel method can produce a mesoporous structure of the catalysts , , , , , , which can improve the mass transfer efficiency and diminish the deactivation rate .…”

Section: Effects Of the Supportmentioning

confidence: 89%

“…Mixtures of acidic-basic oxides were also employed to improve the stability, the hydrogen yield, and the selectivity [55,[61][62][63][64]92]. Additionally, methods for the preparation of supports and catalysts were extensively studied, with the aim of furthering the highest yield of hydrogen [28,59,[61][62][63][64][65][66]75].…”

Section: Effects Of the Supportmentioning

confidence: 99%

“…The new nanowire-structure Ni/Ce 0.9 Sm 0.1 O 2-d showed superior catalyst properties, with a higher surface area and better Ni dispersion, in comparison with similar commercial materials. In addition, it exhibited a high concentration of oxygen vacancies at the surface and high stability in the ESR [75]. Moreover, several methods, such as dealumination [102], coprecipitation [103], perovskite-type oxides [38,104], a three- Figure 5.…”

Section: Reviewmentioning

confidence: 99%

“…The new nanowire‐structure Ni/Ce 0.9 Sm 0.1 O 2– δ showed superior catalyst properties, with a higher surface area and better Ni dispersion, in comparison with similar commercial materials. In addition, it exhibited a high concentration of oxygen vacancies at the surface and high stability in the ESR . Moreover, several methods, such as dealumination , coprecipitation , perovskite‐type oxides , , a three‐dimensional pore network material (KIT‐6) , and the use of different impregnation media (ethanol or water) , have been developed to improve the catalytic performance in the ESR reaction.…”

Section: Effects Of the Supportmentioning

confidence: 99%

“…The supports not only promote the interaction between the metal catalysts and the supports but also enhance the dispersion of the metal on the support surface , , . Both acidic and basic materials were employed as supports , and mixed oxides were also used to improve the properties of the catalysts , , , , , , , . In the case of the promoters, different groups of metals, including alkaline earth metals (Ca, Mg, Sr, Ba), transition metals (La, Ce, Co, Zr, Cu), and noble metals (Rh, Pt, Pd, Au), have been applied to boost the catalytic activity , , , , , .…”

Section: Introductionmentioning

confidence: 99%

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Effect of Supports and Promoters on the Performance of Ni‐Based Catalysts in Ethanol Steam Reforming

et al. 2020

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Ethanol steam reforming (ESR) is one of the potential processes to convert ethanol into valuable products. Hydrogen produced from ESR is considered as green energy for the future and can be an excellent alternative to fossil fuels with the aim of mitigating the greenhouse gas effect. The ESR process has been well studied, using transition metals as catalysts coupled with both acidic and basic oxides as supports. Among various reported transition metals, Ni is an inexpensive material with activity comparable to that of noble metals, showing promising ethanol conversion and hydrogen yields. Additionally, different promoters and supports were utilized to enhance the hydrogen yield and the catalyst stability. This review summarizes and discusses the influences of the supports and promoters of Ni‐based catalysts on the ESR process.

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Section: Effects Of the Supportmentioning

confidence: 89%

Section: Effects Of the Supportmentioning

confidence: 99%

Section: Reviewmentioning

confidence: 99%

Section: Effects Of the Supportmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Supports and Promoters on the Performance of Ni‐Based Catalysts in Ethanol Steam Reforming

et al. 2020

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Towards the Effect of Pt⁰/Pt^δ+ and Ce³⁺ Species at the Surface of CeO₂ Crystals: Understanding the Nature of the Interactions under CO Oxidation Conditions

Borges

Silva²,

Braga

et al. 2021

ChemCatChem

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We synthesized CeO2 nanowires and nanocubes showing {110}+{100} and {100} surfaces predominantly, respectively, once the different surface energies play a crucial role in the behavior of Ce4+/Ce3+ reversibility. We found out that Pt/CeO2 nanowires presented more Ce3+ content, oxygen vacancies, and atomically dispersed Pt, indicating a stronger Pt−Ce interaction. In contrast, the Pt/CeO2 nanocubes presented a higher contribution of Ptδ+ species, suggesting a well‐controlled Pt particle size (∼1 nm) and significant interaction with ceria, with oxygen species more available at the surface. Thus, we suggest that the ceria‘s different surface energies may lead to different Pt distributions of species over the supports. H2‐reduction treatment led to changes in Pt structure that showed a better catalysis performance for the Pt/CeO2 nanowires essentially, supported by XPS and CO‐DRIFTS. Nevertheless, this step did not cause improved activity to the point of overcoming the nanocubes‐based catalyst, and the reasons were fully discussed. Herein, we propose that catalysts′ performance depends on a complex combination of several materials′ characteristics. These features may lead to different reaction pathways depending on the pre‐treatment of the samples.

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Recent Status in Catalyst Modification Strategies for Hydrogen Production from Ethanol Steam Reforming

2023

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Hydrogen as the most promising alternative energy vector to fossil stands out due to its highly energy density and zero pollution. Extending the hydrogen feedstock from hydrocarbons (e. g., methane) to biomass derived oxygen‐containing compounds (CH3OH, C2H5OH etc.) provides the opportunity for low environmental pollution as well as a promising sustainable energy economy. Recently, ethanol with less toxic and high calorific value than traditional fossil energy (coal, oil and natural gas) has garnered significant attention for ethanol steam reforming (ESR) to produce hydrogen, a key component in fuel cell cogeneration system. This paper reviews recent advances on the catalyst developing strategies including structural constitution control, oxide supports modification, surface topography control and bimetallic interactions, and further discusses the catalytic mechanisms, anti‐carbon deposition and sintering resistance strategies on the ethanol steam reforming (ESR) processes. Finally, the challenges and possible strategies for the development of high‐performance catalysts in terms of fundamental research have been discussed.

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Ni supported Ce0.9Sm0.1O2-δ nanowires: An efficient catalyst for ethanol steam reforming for hydrogen production

Cited by 50 publications

References 68 publications

Effect of Supports and Promoters on the Performance of Ni‐Based Catalysts in Ethanol Steam Reforming

Effect of Supports and Promoters on the Performance of Ni‐Based Catalysts in Ethanol Steam Reforming

Towards the Effect of Pt⁰/Pt^δ+ and Ce³⁺ Species at the Surface of CeO₂ Crystals: Understanding the Nature of the Interactions under CO Oxidation Conditions

Recent Status in Catalyst Modification Strategies for Hydrogen Production from Ethanol Steam Reforming

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Ni supported Ce0.9Sm0.1O2-δ nanowires: An efficient catalyst for ethanol steam reforming for hydrogen production

Cited by 50 publications

References 68 publications

Effect of Supports and Promoters on the Performance of Ni‐Based Catalysts in Ethanol Steam Reforming

Effect of Supports and Promoters on the Performance of Ni‐Based Catalysts in Ethanol Steam Reforming

Towards the Effect of Pt0/Ptδ+ and Ce3+ Species at the Surface of CeO2 Crystals: Understanding the Nature of the Interactions under CO Oxidation Conditions

Recent Status in Catalyst Modification Strategies for Hydrogen Production from Ethanol Steam Reforming

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Towards the Effect of Pt⁰/Pt^δ+ and Ce³⁺ Species at the Surface of CeO₂ Crystals: Understanding the Nature of the Interactions under CO Oxidation Conditions