XANES and EXAFS studies on metal nanoparticle growth and bimetallic interaction of Ni-based catalysts for CO2 reforming of CH4

Wang, Hui; Miller, Jeffrey T.; Shakouri, Mohsen; Xi, Chunyu; Wu, Tianpin; Zhao, Haiyan; Akatay, M. Cem

doi:10.1016/j.cattod.2012.09.015

Cited by 53 publications

(30 citation statements)

References 17 publications

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“…Except for the selection of Ni precursors, the preparation method is another important factor that influences the catalytic activity [84]. Many efforts have been made to improve the preparation methods by changing the preparation procedure [84,85,95,96,[107][108][109][110][111], adjusting the Ni loadings [112,113] and the molar ratio of Ni/promoters [107,114], and optimizing the preparation parameters [115][116][117]. It is known that the physicochemical features (total surface area, total pore volume and metal distribution) of catalysts prepared by various methods are significantly different [84].…”

Section: Influences Of Preparation and Pre-treated Methodsmentioning

confidence: 99%

“…In addition, catalyst supports should supply a matrix with high specific surface area, good durability and resistance to coke and sintering [14]. In addition, the preparation methods can help synthesize catalysts with smaller metal nanoparticles, higher Ni dispersion and stronger metal-support interaction [85]. Table 3 shows a summary of catalytic conditioning studies using modified nickel-based catalysts.…”

Section: Ni-based Catalysts For Catalytic Steam Reforming Of Tarmentioning

confidence: 99%

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Preparation, modification and development of Ni-based catalysts for catalytic reforming of tar produced from biomass gasification

Zhang

Liu

Shen

et al. 2018

Renewable and Sustainable Energy Reviews

223

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Section: Influences Of Preparation and Pre-treated Methodsmentioning

confidence: 99%

Section: Ni-based Catalysts For Catalytic Steam Reforming Of Tarmentioning

confidence: 99%

Preparation, modification and development of Ni-based catalysts for catalytic reforming of tar produced from biomass gasification

Zhang

Liu

Shen

et al. 2018

Renewable and Sustainable Energy Reviews

223

View full text Add to dashboard Cite

show abstract

“…7) [37,49,50]. However, such systems often involve substantial beam path-lengths and can only operate at ambient pressure conditions, next generation XAFS/ XANES high-speed instruments operating under industrially relevant conditions would significantly broaden existing understanding of how the chemical environment alters catalyst coordination.…”

Section: Catalyzing the Next Stage In The Materials Super Highwaymentioning

confidence: 99%

The Materials Super Highway: Integrating High-Throughput Experimentation into Mapping the Catalysis Materials Genome

2014

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The materials genome initiative (MGI) aims to accelerate the process of materials discovery and reduce the time to commercialization of advanced materials. Thus far, the MGI has resulted in significant progress in computational simulation, modeling, and predictions of catalytic materials. However, prodigious amounts of experimental data are necessary to inform and validate these computational models. High-throughput (HT) methodologies, in which hundreds of materials are rapidly synthesized, processed, and characterized for their figure of merit, represent the key experimental enabler of the theoretical aspects of the MGI. HT methodologies have been used since the early 1980s for identifying novel catalyst formulations and optimizing existing catalysts. Many sophisticated screening and data mining techniques have been developed and since the mid-1990s, this approach has become a widely accepted industrial practice. This article will provide a short history of major developments in HT and will discuss screening approaches combining rapid, qualitative primary screens via thin-film techniques with a series of quantitative screens using plug flow reactors. An illustrative example will be provided of one such study in which novel fuel-flexible sulfur tolerant cracking catalysts were developed. We will then illustrate a path forward that leverages existing HT expertise to validate, provide empirical data to and help guide future theoretical studies.

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“…Also, Ni-Co combination was proved to be highly effective for preventing other problems potentially causing deactivation such as metal sintering [22]. In addition, in our previous work, it was found from TEM analysis that Ni-Co catalysts prepared by coprecipitation method formed small, finely dispersed, and uniform metal particles after reduction [23]. Therefore, the combination of Ni-Co will be evaluated in this study.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen generation via supercritical water gasification of lignin using Ni-Co/Mg-Al catalysts

Kang

Azargohar

Dalai

et al. 2017

Int. J. Energy Res.

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Summary In this study, a group of Ni‐Co/Mg‐Al catalysts was prepared for hydrogen production via supercritical water gasification of lignin. The effects of different supports and preparation methods were examined. All catalysts were evaluated under the operation conditions of 650 °C, 26 MPa, and water to biomass mass ratio of 5 in a batch reactor. The Cop.2.6Ni‐5.2Co/2.6Mg‐Al catalyst showed the best performance with highest gas yield (12.9 wt%) and hydrogen yield (2.36 mmol·g−1). The results from catalyst characterization suggest that the properties of this type of catalyst are dependent on multiple factors including support Mg‐Al molar ratio and preparation method, and better coke resistance of the catalyst could be obtained by the preparation method of coprecipitation. Therefore, coprecipitation method should be applied for the preparation of Ni‐Co/Mg‐Al catalysts for hydrogen production via supercritical water gasification of lignin. Copyright © 2017 John Wiley & Sons, Ltd.

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XANES and EXAFS studies on metal nanoparticle growth and bimetallic interaction of Ni-based catalysts for CO2 reforming of CH4

Cited by 53 publications

References 17 publications

Preparation, modification and development of Ni-based catalysts for catalytic reforming of tar produced from biomass gasification

Preparation, modification and development of Ni-based catalysts for catalytic reforming of tar produced from biomass gasification

The Materials Super Highway: Integrating High-Throughput Experimentation into Mapping the Catalysis Materials Genome

Hydrogen generation via supercritical water gasification of lignin using Ni-Co/Mg-Al catalysts

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