Ni catalyst wash-coated on metal monolith with enhanced heat-transfer capability for steam reforming

Ryu, Jae Hong; Lee, Kwan Young; La, Howon; Kim, Hak Joo; Yang, Jung Il; Jung, Heon

doi:10.1016/j.jpowsour.2007.05.107

Cited by 70 publications

(28 citation statements)

References 12 publications

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“…This SR mechanism was successfully applied in studies of steam reforming of methane over, Ni/YSZ anodes of solid oxide fuels cells [99][100][101][102][103][104], and experimental results from literature [105]. Despite the introduction of new reaction paths, together with adjustments of the kinetic parameters for partial oxidation and dry reforming of methane, the current mechanism extension is still able to predict the experimental results for methane steam reforming.…”

Section: Methane Steam Reforming (Sr)mentioning

confidence: 99%

Surface Reaction Kinetics of Steam- and CO2-Reforming as Well as Oxidation of Methane over Nickel-Based Catalysts

et al. 2015

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An experimental and kinetic modeling study on the Ni-catalyzed conversion of methane under oxidative and reforming conditions is presented. The numerical model is based on a surface reaction mechanism consisting of 52 elementary-step like reactions with 14 surface and six gas-phase species. Reactions for the conversion of methane with oxygen, steam, and CO2 as well as methanation, water-gas shift reaction and carbon formation via Boudouard reaction are included. The mechanism is implemented in a one-dimensional flow field description of a fixed bed reactor. The model is evaluated by comparison of numerical simulations with data derived from isothermal experiments in a flow reactor over a powdered nickel-based catalyst using varying inlet gas compositions and operating temperatures. Furthermore, the influence of hydrogen and water as co-feed on methane dry reforming with CO2 is also investigated.

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Section: Methane Steam Reforming (Sr)mentioning

confidence: 99%

Surface Reaction Kinetics of Steam- and CO2-Reforming as Well as Oxidation of Methane over Nickel-Based Catalysts

et al. 2015

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“…1 e Schematic view of test section. i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n e n e r g y x x x ( 2 0 1 5 ) 1 e1 2 this experiment was a mixture of Ni and Al 2 O 3 (77 ± 4 vol% Ni), as used in the study by Ryu et al [21].…”

Section: Experimental Apparatusmentioning

confidence: 99%

The limiting process in steam methane reforming with gas diffusion into a porous catalytic wall in a flow reactor

Saito

Kojima

Yoshida

2015

International Journal of Hydrogen Energy

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“…The significant effects of heat and mass transport on catalytic chemical reaction processes have been reported in various theoretical and experimental studies [2][3][4][5]. For industrial reaction processes that require intensive heat and mass flux with rapid load-follow-up performance, metal foams are utilized for catalyst preparation in order to improve thermal conductivity [6]. In such a scheme, non-active high-surface-area metal oxides, such as alumina, are initially deposited on the metal foam surface, followed by immobilization of the desired active metals or metal oxides on the surface.…”

Section: Introductionmentioning

confidence: 99%

Synthesis Chemistry and Properties of Ni Catalysts Fabricated on SiC@Al2O3 Core-Shell Microstructure for Methane Steam Reforming

Lee

2020

Catalysts

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Heat and mass transport properties of heterogeneous catalysts have significant effects on their overall performance in many industrial chemical reaction processes. In this work, a new catalyst micro-architecture consisting of a highly thermally conductive SiC core with a high-surface-area metal-oxide shell is prepared through a charge-interaction-induced heterogeneous hydrothermal construction of SiC@NiAl-LDH core-shell microstructures. Calcination and reduction of the SiC@NiAl-LDH core-shell results in the formation of Ni nanoparticles (NPs) dispersed on SiC@Al2O3, referred to as Ni/SiC@Al2O3 core-shell catalyst. The Ni/SiC@Al2O3 exhibit petal-like shell morphology consisting of a number of Al2O3 platelets with their planes oriented perpendicular to the surface, which is beneficial for improved mass transfer. For an extended period of methane-stream-reforming reaction, the Ni/SiC@Al2O3 core-shell structure remained stable without any significant degradation at the core/shell interface. However, the catalyst suffered from coking and sintering likely associated with the relatively large Ni particle sizes and the low Al2O3 content. The synthesis procedure and chemistry for construction of supported Ni catalyst on the core-shell microstructure of the highly thermal conductive SiC core, and the morphology-controlled metal-oxide shell, could provide new opportunities for various catalytic reaction processes that require high heat flux and enhanced mass transport.

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Ni catalyst wash-coated on metal monolith with enhanced heat-transfer capability for steam reforming

Cited by 70 publications

References 12 publications

Surface Reaction Kinetics of Steam- and CO2-Reforming as Well as Oxidation of Methane over Nickel-Based Catalysts

Surface Reaction Kinetics of Steam- and CO2-Reforming as Well as Oxidation of Methane over Nickel-Based Catalysts

The limiting process in steam methane reforming with gas diffusion into a porous catalytic wall in a flow reactor

Synthesis Chemistry and Properties of Ni Catalysts Fabricated on SiC@Al2O3 Core-Shell Microstructure for Methane Steam Reforming

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