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Methane Reforming Ni - Crossref

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Last Updated: 16 May 2022

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Coke-Resistant Ni/CeZrO2 Catalysts for Dry Reforming of Methane to Produce Hydrogen-Rich Syngas

In ceria-zirconia-mixed oxide-supported Ni catalysts, the study of methane conversion was done over high-ratio zirconia. The catalyst support and Ni composition had an effect on the catalyst's physicochemical properties and performance were investigated. The 10%Ni/CeZrO2 catalyst with the highest catalytic yield over a period of 240 min, atmospheric pressure, and a WHSV of 60,000 mL g1 h1 were found, with conversions of CH4 and CO2 up to 74% and 55% respectively.

Source link: https://doi.org/10.3390/nano12091556


Steam reforming of methane over nickel catalyst using a one-dimensional model

LOGEcat [1]] A one-dimensional model for modeling steam reforming of methane over a nickel-based catalyst has been carried out in this paper. The model is suitable for the simulation of all common after-treatment catalytic reactions of combustion exhaust gas, as well as other chemical reactions involving heterogeneous catalysis, such as, the Sabatier process [27]. When compared to the reference results, we find a high correlation between the various profiles produced with a 1D model. Note that the primary aim of this research is to see how well the 1D model can reproduce the basic chemistry for modeling steam reforming of methane over nickel-based catalysts. It's interesting to note that the cost-effective reduced order model is able to represent the physics and chemistry involved with a multi-step reaction process that displays the model's predictive capability.

Source link: https://doi.org/10.47604/ijes.1520


Improving Anti-Coking Properties of Ni/Al2O3 Catalysts via Synergistic Effect of Metallic Nickel and Nickel Phosphides in Dry Methane Reforming

Nickel dispersion, as well as the interaction between nickel and alumina support result in smaller nickel particles, are all affected by phosphorus' presence. At all P contained catalysts, the coexistence of metallic nickel and nickel phosphides species is confirmed. Following a 50-h of dry methane reformation, few carbon depositions were detected after a good balance between CH4 dissociation and CO2 dissociation in NiP-2/Al2O3 catalyst.

Source link: https://doi.org/10.3390/ma15093044


Modeling and optimization of dry reforming of methane over Ni-Co/Al 2 O 3 -ZrO 2 catalyst coating via PVD method in a microchannel reactor using Box-Behnken design

Abstract In the current study, the coating Ni-Co /Al 2 O 3 -ZrO 2 nanocatalyst was tested in a microchannel reactor using the physical vapor deposition technique to optimize dry reforming of methane. In the case where coating time yielded more uniform and evenly dispersed catalyst particles, catalyst film activity remained highly dependent on coating time. Nearly 95% of the particles had a diameter of 10-20 nm when deposition time was 4 minutes, which was approximately 95%. According to a GIXRD report, increasing Co/Ni weight percentages up to 50% will result in reduced particle size, increased flexibility, stability, and resistance to carbon deposition. Compared to the Co-rich phase, higher Co weight percentages resulted in relatively higher particle size and lower catalytic activity, despite the fact that the active sites were synthesized and Ni particles were obscured by the Co-rich phase.

Source link: https://doi.org/10.21203/rs.3.rs-1504542/v1

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions