Pd enhanced WC catalyst to promote heterogeneous methane combustion

Terracciano, Anthony C.; Oliveira, Samuel De; Siddhanti, Deepti A.; Blair, Richard G.; Vasu, Subith; Orlovskaya, Nina

doi:10.1016/j.applthermaleng.2016.11.109

Cited by 10 publications

(2 citation statements)

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“…It has also been considered as a replacement for Ir systems in satellite thrusters powered by hydrazine [ 42 ]. Pd enhanced WC catalyst was used successfully in heterogeneous methane combustion [ 43 ]. Composite materials contain Pd(0) and W 2 C particles well-dispersed on carbon were investigated as hydrogen evolution catalysis [ 44 ].…”

Section: Resultsmentioning

confidence: 99%

WxC-β-SiC Nanocomposite Catalysts Used in Aqueous Phase Hydrogenation of Furfural

et al. 2017

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This study investigates the effects of the addition of tungsten on the structure, phase composition, textural properties and activities of β-SiC-based catalysts in the aqueous phase hydrogenation of furfural. Carbothermal reduction of SiO2 in the presence of WO3 at 1550 °C in argon resulted in the formation of WxC-β-SiC nanocomposite powders with significant variations in particle morphology and content of WxC-tipped β-SiC nano-whiskers, as revealed by TEM and SEM-EDS. The specific surface area (SSA) of the nanocomposite strongly depended on the amount of tungsten and had a notable impact on its catalytic properties for the production of furfuryl alcohol (FA) and tetrahydrofurfuryl alcohol (THFA). Nanocomposite WxC-β-SiC catalysts with 10 wt % W in the starting mixture had the highest SSA and the smallest WxC crystallites. Some 10 wt % W nanocomposite catalysts demonstrated up to 90% yield of THFA, in particular in the reduction of furfural derived from biomass, although the reproducible performance of such catalysts has yet to be achieved.

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Section: Resultsmentioning

confidence: 99%

WxC-β-SiC Nanocomposite Catalysts Used in Aqueous Phase Hydrogenation of Furfural

et al. 2017

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“…Because it has been shown that combustion instabilities have a wave-like component, acoustic emission profiles were a focus of this study. In addition to the measurement of acoustic emissions, temperature profiles at fixed locations within the combustion chamber and radiative emissions in the visible spectrum from the exhaust were collected from the combustion chamber, while operation was conducted at various equivalence ratios and a fixed air flow rate, using methane as fuel.When such a study is conducted, the optimal porous media for given ranges of equivalence ratios may be determined and evaluated as potential substrates for catalytic applications. − …”

Section: Introductionmentioning

confidence: 99%

Thermal and Acoustic Performance of Al₂O₃, MgO–ZrO₂, and SiC Porous Media in a Flow-Stabilized Heterogeneous Combustor

et al. 2017

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A comparative analysis of performance of three different porous ceramic materials used as a flame-contained media within a flow-stabilized combustor is presented within this work. The experiments were performed at a constant air flow rate and variable methane flow rates. α-Al2O3, MgO–ZrO2, and SiC highly porous ceramics were used as the porous media. All three porous media used in the study had equal dimensions and porosity and were located in the same fixed position within the combustion chamber. Characterization of the structure of porous media before experimentation was performed using multiple methods. During combustor operation, temperature profiles were collected along with optical and acoustic emissions and correlated with the composition of the gaseous methane/air mixtures. It was found that, while SiC enables the highest temperatures within the combustion chamber at higher equivalence ratios, the ionically conducting MgO–ZrO2 porous media greatly expands the lean limit of combustor operation and is, thus, the preferred porous media material for lower equivalence ratio operation.

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Tungsten Carbides

Shabalin

2022

Ultra-High Temperature Materials IV

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Pd enhanced WC catalyst to promote heterogeneous methane combustion

Cited by 10 publications

References 71 publications

WxC-β-SiC Nanocomposite Catalysts Used in Aqueous Phase Hydrogenation of Furfural

WxC-β-SiC Nanocomposite Catalysts Used in Aqueous Phase Hydrogenation of Furfural

Thermal and Acoustic Performance of Al₂O₃, MgO–ZrO₂, and SiC Porous Media in a Flow-Stabilized Heterogeneous Combustor

Tungsten Carbides

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Pd enhanced WC catalyst to promote heterogeneous methane combustion

Cited by 10 publications

References 71 publications

WxC-β-SiC Nanocomposite Catalysts Used in Aqueous Phase Hydrogenation of Furfural

WxC-β-SiC Nanocomposite Catalysts Used in Aqueous Phase Hydrogenation of Furfural

Thermal and Acoustic Performance of Al2O3, MgO–ZrO2, and SiC Porous Media in a Flow-Stabilized Heterogeneous Combustor

Tungsten Carbides

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Product

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Thermal and Acoustic Performance of Al₂O₃, MgO–ZrO₂, and SiC Porous Media in a Flow-Stabilized Heterogeneous Combustor