Journal ArticleDOI
Carbon dioxide reforming of methane to synthesis gas over Ni-MCM-41 catalysts
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TLDR
In this article, a series of nickel incorporated MCM-41 mesoporous molecular sieves were prepared by direct hydrothermal synthesis and the catalysts were carefully characterized by X-ray diffraction (XRD), N2 physisorption, H2 temperature-programmed reduction (TPR), H2 chemisoric, thermogravimetry, and Raman spectra.Abstract:
A series of nickel incorporated MCM-41 mesoporous molecular sieves (Ni-MCM-41) were prepared by direct hydrothermal synthesis. Nickel nitrate was used as the Ni precursor. The catalytic properties of the Ni-MCM-41 were studied for the reforming of methane with carbon dioxide. The catalysts were carefully characterized by X-ray diffraction (XRD), N2 physisorption, H2 temperature-programmed reduction (TPR), H2 chemisorption, thermogravimetry, and Raman spectra. The results indicated that the presence of a suitable amount of nickel in Ni-MCM-41 was beneficial for maintaining high catalytic activity and long-term stability. The improved catalytic performance was suggested to closely associate with both the amount of active centers on the pore wall surface and the stabilized dispersion of these active sites by the silica matrix and/or the surrounding unreduced nickel ions. This anchoring effect facilitated the formation of the active Ni nano-clusters with high dispersion under reaction conditions. Hence the reforming reaction is favored and the carbon formation is suppressed. Two types of carbon species: active carbon and graphite were produced over the spent catalysts. The Ni-MCM-41 catalysts provided good catalytic activity, high stability and reasonable CO/H2 ratios in the product. Thus, the Ni-MCM-41 catalyst prepared by the direct hydrothermal synthesis promised a novel and stable catalyst candidate for CO2 reforming of CH4.read more
Citations
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Dry reforming of methane: Influence of process parameters—A review
TL;DR: In this article, the authors explored the influences of the active metal, support, promoter, preparation methods, calcination temperature, reducing environment, particle size and reactor choice on catalytic activity and carbon deposition for the dry reforming of methane.
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A short review of catalysis for CO2 conversion
TL;DR: In this paper, the authors present the recent progress of catalytic CO 2 conversion and aim to shed a light into the chemical fixation of CO 2, which has attracted the great interest in recent years.
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Catalyst design for dry reforming of methane: Analysis review
Nicolas Abdel Karim Aramouni,Jad G. Touma,Belal J. Abu Tarboush,Joseph Zeaiter,Mohammad N. Ahmad +4 more
TL;DR: In this article, the authors studied the effect of metal support and metal support-promoter combinations on the performance and stability of bi-and tri-metallic catalysts for dry reforming of methane, and concluded that a catalyst design must take into account not only the separate effects of the active metal, support and promoter, but also include the combined and mutual interactions of these components.
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Progresses in the Preparation of Coke Resistant Ni-based Catalyst for Steam and CO2 Reforming of Methane
TL;DR: In this article, the authors summarized the very recent progresses in the design, synthesis, and characterization of coke resistant Ni catalysts for steam and CO2 reforming of methane, and discussed the thermal stability, regeneration, and future development of Coke-Resistant Ni catalyst for these processes.
Journal ArticleDOI
Pollution to solution: Capture and sequestration of carbon dioxide (CO2) and its utilization as a renewable energy source for a sustainable future
Farahiyah Abdul Rahman,Maniruzzaman A. Aziz,Rahman Saidur,Rahman Saidur,Wan Azelee Wan Abu Bakar,Mohd Rosli Hainin,Ramadhansyah Putrajaya,Norhidayah Abdul Hassan +7 more
TL;DR: In this article, a sustainable method combining CCS and biofuel production using CO2 as a feedstock is proposed. But, the method is not suitable for large-scale CCS systems.
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Carbon Dioxide Reforming of Methane To Produce Synthesis Gas over Metal-Supported Catalysts: State of the Art
TL;DR: In this article, a comprehensive review on the thermodynamics, catalyst selection and activity, reaction mechanism, and kinetics of the CO2 reforming of CH4 is presented, where Ni-based catalysts impregnated on certain supports show carbon free operation and thus attract much attention.