Tailored hydrotalcite-based Mg-Ni-Al catalyst for hydrogen production via methane decomposition: Effect of nickel concentration and spinel-like structures

Umair Sikander, Mohamad Fakhrul Samsudin, Suriati Sufian, Ku Zilati KuShaari, Chong Fai Kait, Salman Raza Naqvi, Wei-Hsin Chen

研究成果: Article

2 引文 (Scopus)

摘要

Thrive for the COx-free hydrogen production via methane decomposition has gained much interest owing to its feasibility and environmental friendliness. Herein, ahydrotalcite based Nickel catalyst was synthesized via co-precipitation method by varying the amount of Nickel concentration and tested for methane decomposition reaction in a fixed bed reactor. In addition, the effect of calcination temperature in the development of the spinel-like structure of as-developed catalyst was comprehensively discussed. It was found that the hydrotalcite based Nickel catalyst prepared at 40% Nickel concentration has the highest performance of above 80% conversion for 7 h of methane decomposition which was owing to its effective diffusion of carbon particles and its spinel-like structure, evidently from the XRD and FESEM analysis. The profound performance monitored here was attributed to the formation of carbon nanofibers (CNFs) on the surface of the catalyst which levitates the active Niospecies on its tips, results in more available active sites for the chemisorptions of the methane molecules. Nevertheless, the excessive of Nickel concentration leads to the detrimental methane decomposition performance, hencepromotes the formation of large particle size and successive development of bulk NiO phases during the reduction process, consequently abnegate the overall methane decomposition reaction. The aforementionedfindingsshow that the spinel-like structure is the key factor in the growth of long uniform CNFs and elevation of active sites on the fibre tips.

原文English
頁(從 - 到)14424-14433
頁數10
期刊International Journal of Hydrogen Energy
44
發行號28
DOIs
出版狀態Published - 2019 五月 31

指紋

hydrogen production
Hydrogen production
spinel
Methane
methane
Nickel
nickel
Decomposition
decomposition
catalysts
Catalysts
Carbon nanofibers
carbon
Chemisorption
Coprecipitation
Calcination
roasting
chemisorption
beds
Particle size

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

引用此文

Sikander, Umair ; Samsudin, Mohamad Fakhrul ; Sufian, Suriati ; KuShaari, Ku Zilati ; Kait, Chong Fai ; Naqvi, Salman Raza ; Chen, Wei-Hsin. / Tailored hydrotalcite-based Mg-Ni-Al catalyst for hydrogen production via methane decomposition : Effect of nickel concentration and spinel-like structures. 於: International Journal of Hydrogen Energy. 2019 ; 卷 44, 編號 28. 頁 14424-14433.
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abstract = "Thrive for the COx-free hydrogen production via methane decomposition has gained much interest owing to its feasibility and environmental friendliness. Herein, ahydrotalcite based Nickel catalyst was synthesized via co-precipitation method by varying the amount of Nickel concentration and tested for methane decomposition reaction in a fixed bed reactor. In addition, the effect of calcination temperature in the development of the spinel-like structure of as-developed catalyst was comprehensively discussed. It was found that the hydrotalcite based Nickel catalyst prepared at 40{\%} Nickel concentration has the highest performance of above 80{\%} conversion for 7 h of methane decomposition which was owing to its effective diffusion of carbon particles and its spinel-like structure, evidently from the XRD and FESEM analysis. The profound performance monitored here was attributed to the formation of carbon nanofibers (CNFs) on the surface of the catalyst which levitates the active Niospecies on its tips, results in more available active sites for the chemisorptions of the methane molecules. Nevertheless, the excessive of Nickel concentration leads to the detrimental methane decomposition performance, hencepromotes the formation of large particle size and successive development of bulk NiO phases during the reduction process, consequently abnegate the overall methane decomposition reaction. The aforementionedfindingsshow that the spinel-like structure is the key factor in the growth of long uniform CNFs and elevation of active sites on the fibre tips.",
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Tailored hydrotalcite-based Mg-Ni-Al catalyst for hydrogen production via methane decomposition : Effect of nickel concentration and spinel-like structures. / Sikander, Umair; Samsudin, Mohamad Fakhrul; Sufian, Suriati; KuShaari, Ku Zilati; Kait, Chong Fai; Naqvi, Salman Raza; Chen, Wei-Hsin.

於: International Journal of Hydrogen Energy, 卷 44, 編號 28, 31.05.2019, p. 14424-14433.

研究成果: Article

TY - JOUR

T1 - Tailored hydrotalcite-based Mg-Ni-Al catalyst for hydrogen production via methane decomposition

T2 - Effect of nickel concentration and spinel-like structures

AU - Sikander, Umair

AU - Samsudin, Mohamad Fakhrul

AU - Sufian, Suriati

AU - KuShaari, Ku Zilati

AU - Kait, Chong Fai

AU - Naqvi, Salman Raza

AU - Chen, Wei-Hsin

PY - 2019/5/31

Y1 - 2019/5/31

N2 - Thrive for the COx-free hydrogen production via methane decomposition has gained much interest owing to its feasibility and environmental friendliness. Herein, ahydrotalcite based Nickel catalyst was synthesized via co-precipitation method by varying the amount of Nickel concentration and tested for methane decomposition reaction in a fixed bed reactor. In addition, the effect of calcination temperature in the development of the spinel-like structure of as-developed catalyst was comprehensively discussed. It was found that the hydrotalcite based Nickel catalyst prepared at 40% Nickel concentration has the highest performance of above 80% conversion for 7 h of methane decomposition which was owing to its effective diffusion of carbon particles and its spinel-like structure, evidently from the XRD and FESEM analysis. The profound performance monitored here was attributed to the formation of carbon nanofibers (CNFs) on the surface of the catalyst which levitates the active Niospecies on its tips, results in more available active sites for the chemisorptions of the methane molecules. Nevertheless, the excessive of Nickel concentration leads to the detrimental methane decomposition performance, hencepromotes the formation of large particle size and successive development of bulk NiO phases during the reduction process, consequently abnegate the overall methane decomposition reaction. The aforementionedfindingsshow that the spinel-like structure is the key factor in the growth of long uniform CNFs and elevation of active sites on the fibre tips.

AB - Thrive for the COx-free hydrogen production via methane decomposition has gained much interest owing to its feasibility and environmental friendliness. Herein, ahydrotalcite based Nickel catalyst was synthesized via co-precipitation method by varying the amount of Nickel concentration and tested for methane decomposition reaction in a fixed bed reactor. In addition, the effect of calcination temperature in the development of the spinel-like structure of as-developed catalyst was comprehensively discussed. It was found that the hydrotalcite based Nickel catalyst prepared at 40% Nickel concentration has the highest performance of above 80% conversion for 7 h of methane decomposition which was owing to its effective diffusion of carbon particles and its spinel-like structure, evidently from the XRD and FESEM analysis. The profound performance monitored here was attributed to the formation of carbon nanofibers (CNFs) on the surface of the catalyst which levitates the active Niospecies on its tips, results in more available active sites for the chemisorptions of the methane molecules. Nevertheless, the excessive of Nickel concentration leads to the detrimental methane decomposition performance, hencepromotes the formation of large particle size and successive development of bulk NiO phases during the reduction process, consequently abnegate the overall methane decomposition reaction. The aforementionedfindingsshow that the spinel-like structure is the key factor in the growth of long uniform CNFs and elevation of active sites on the fibre tips.

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