One-pot sol-gel synthesis of MgO nanoparticles supported nickel and iron catalysts for undiluted methane decomposition into COx free hydrogen and nanocarbon

Pudukudy, Manoj; Yaakob, Zahira; Mazuki, Mohd Zulhamizan; Takriff, Mohd Sobri; Jahaya, Seri Suriani

doi:10.1016/j.apcatb.2017.04.070

Cited by 119 publications

(50 citation statements)

References 103 publications

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“…Nevertheless, a very strong interaction between the metal and the support may hinder the reducibility of the metal precursor oxides or result in the formation of hardly reducible metal-support species (solid solutions, spinel structures) that are inactive for the decomposition of methane [63,89]. As a consequence, the formation of active metal sites is prevented and the catalytic activity is negatively affected [86,89,91,[111][112][113][114][115]. Despite the inactivity of the metal-support species, some authors have reported a positive role of these species since they could avoid agglomeration of the metal particles [86,91].…”

Section: Role Of Metal Promoters and Catalyst Supportmentioning

confidence: 99%

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Methane Pyrolysis for CO₂‐Free H₂ Production: A Green Process to Overcome Renewable Energies Unsteadiness

Sanchez‐Bastardo

Schlögl

Ruland

2020

Chemie Ingenieur Technik

121

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The Carbon2Chem® project aims to convert exhaust gases from the steel industry into chemicals such as methanol to reduce CO2 emissions. Here, H2 is required for the conversion of CO2 into methanol. Although much effort is put to produce H2 from renewables, the use of fossil fuels, especially natural gas, seems to be fundamental in the short term. For this reason, the development of clean technologies for the processing of natural gas with a low environmental impact has become a topic of utmost importance. In this context, methane pyrolysis has received special attention to produce CO2‐free H2.

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Section: Role Of Metal Promoters and Catalyst Supportmentioning

confidence: 99%

“…Iron is less active than nickel but more resistant to carbon deactivation and, hence, more stable at higher temperatures , , due to the higher diffusion rate of carbon in iron , , , . Iron catalysts have been reported to be stable up to 700–1000 °C , , , .…”

Section: Catalytic Methane Pyrolysismentioning

confidence: 99%

Methane Pyrolysis for CO₂‐Free H₂ Production: A Green Process to Overcome Renewable Energies Unsteadiness

Sanchez‐Bastardo

Schlögl

Ruland

2020

Chemie Ingenieur Technik

121

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“…To date, few reports have described the simultaneous preparation of hydrogen and high value‐added carbon materials from WCO, whereas there have been many reports on the use of methane as raw material for this process. For instance, Pudukudy et al 24 described a one‐pot sol‐gel synthesis of MgO nanocatalysts loaded with Ni or Fe and evaluated their performance in methane decomposition. The effect of the reaction temperature on the hydrogen yield and the performance of the deposited carbon nanotubes (CNTs) were studied in detail.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous production of hydrogen and carbon nanotubes from cracking of a waste cooking oil model compound over Ni‐Co / SBA ‐15 catalysts

Liu

2020

Int J Energy Res

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Hydrogen is considered an ideal energy carrier. However, the use of fossil fuels to produce hydrogen depletes natural resources and causes environmental problems. Therefore, there is an urgent need to find alternative raw materials and technologies for the production of hydrogen. Waste cooking oil (WCO) is a renewable energy source that has emerged as a potential raw material for hydrogen production. This study describes the production of hydrogen and carbon nanotubes (CNTs) by catalytic cracking of a WCO model compound (WCOMC) performed in a lab-scale fixed bed using Ni-Co/SBA-15 catalysts. The phase, structure and reduction properties of the catalyst were analysed by using different characterisation methods. The effects of the nickel-cobalt metal content and the reaction temperature on both the hydrogen production and the quality of the CNTs were investigated. The deposited carbonaceous products were characterised to analyse their external appearance, internal structure, oxidation stability and graphitisation degree. The results indicated that the catalyst containing 20% Ni and 30% Co showed the highest activity. When reaction temperature was 800 C, the instantaneous volume fraction of hydrogen was close to 43.5 vol% and the content of hydrogen in the gas product was close to 66.5 vol%. A few multi-walled CNTs having a small diameter and some CNTs with an open-topped structure were deposited on 10%Ni-40%Co/SBA-15 and 30%Ni-20%Co/SBA-15, respectively. Thermogravimetric analysis and Raman spectroscopic analysis indicated that all CNTs showed high oxidation stability and a high degree of graphitisation.

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“…Baston et al [ 25 , 26 ] incorporated the precursors of Mo, Co, and Ni oxides into the sol of γ-Al 2 O 3 and ZrO 2 being formed and found the developed surface area of the resulting materials, fine distribution of active components, and enhanced activity. Other research groups utilized the similar one-pot sol-gel route to synthesize Ni, Mo, Co, and Fe loaded MgO nanocatalysts [ 17 , 27 , 28 ]. In general, the obtained materials possess developed a porous structure and, as a result, high values of specific surface area (SSA) and pore volume (V p ).…”

Section: Introductionmentioning

confidence: 99%

Sol-Gel-Prepared Ni-Mo-Mg-O System for Catalytic Transformation of Chlorinated Organic Wastes into Nanostructured Carbon

et al. 2020

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The present work aimed to prepare Ni-Mo particles distributed within the MgO matrix. With this purpose in mind, a ternary Ni-Mo-Mg oxide system was synthesized by a sol−gel approach. The samples were studied by low-temperature nitrogen adsorption, X-ray diffraction analysis, and transmission electron microscopy equipped with energy dispersive X-ray analysis. Both the nickel and molybdenum species in the prepared samples were characterized by a fine and uniform distribution. The diffraction pattern of the ternary system was predominantly represented by the MgO reflections. The catalytic activity of the samples was tested in the decomposition of 1,2-dichloroethane used as a representative of the chlorinated organic wastes. The nanostructured carbon filaments resulting from the decomposition of the halogenated substrate were found to be characterized by a narrow diameter distribution, according to the transmission electron microscopy data, thus confirming the fine distribution of the active Ni-Mo particles. The results obviously show the advantages of the sol−gel technique for obtaining efficient catalysts.

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One-pot sol-gel synthesis of MgO nanoparticles supported nickel and iron catalysts for undiluted methane decomposition into COx free hydrogen and nanocarbon

Cited by 119 publications

References 103 publications

Methane Pyrolysis for CO₂‐Free H₂ Production: A Green Process to Overcome Renewable Energies Unsteadiness

Methane Pyrolysis for CO₂‐Free H₂ Production: A Green Process to Overcome Renewable Energies Unsteadiness

Simultaneous production of hydrogen and carbon nanotubes from cracking of a waste cooking oil model compound over Ni‐Co / SBA ‐15 catalysts

Sol-Gel-Prepared Ni-Mo-Mg-O System for Catalytic Transformation of Chlorinated Organic Wastes into Nanostructured Carbon

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One-pot sol-gel synthesis of MgO nanoparticles supported nickel and iron catalysts for undiluted methane decomposition into COx free hydrogen and nanocarbon

Cited by 119 publications

References 103 publications

Methane Pyrolysis for CO2‐Free H2 Production: A Green Process to Overcome Renewable Energies Unsteadiness

Methane Pyrolysis for CO2‐Free H2 Production: A Green Process to Overcome Renewable Energies Unsteadiness

Simultaneous production of hydrogen and carbon nanotubes from cracking of a waste cooking oil model compound over Ni‐Co / SBA ‐15 catalysts

Sol-Gel-Prepared Ni-Mo-Mg-O System for Catalytic Transformation of Chlorinated Organic Wastes into Nanostructured Carbon

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Product

Resources

About

Methane Pyrolysis for CO₂‐Free H₂ Production: A Green Process to Overcome Renewable Energies Unsteadiness

Methane Pyrolysis for CO₂‐Free H₂ Production: A Green Process to Overcome Renewable Energies Unsteadiness