Stabilization of Ni, Fe, and Co nanoparticles through modified Stöber method to obtain excellent catalytic performance: Preparation, characterization, and catalytic activity for methane decomposition

U. P.M. Ashik, W. M.A.Wan Daud

研究成果: ジャーナルへの寄稿学術誌査読

23 被引用数 (Scopus)

抄録

Nanoparticle formation from their respective precursors through bottom-up method is a very fascinating practice in nanotechnology. This research contribution discusses two promising bottom-up methods: (i) controlled precipitation of Ni, Fe, and Co nanoparticles and reinforcement with silicate through modified Stöber method and (ii) chemical vapor deposition of nanocarbon from methane. Experimental results reveal that metal oxide particles were formed as single-crystal nanoparticles after silicate addition and exhibited catalytic activity enhancing features, such as low particle size and high surface area and porosity. The single-point surface area increased from 62.22 m2/g to 91.50 m2/g, 35.13 m2/g to 97.31 m2/g, and 14.29 m2/g to 48.96 m2/g for n-NiO, n-FeO, and n-CoO nanoparticles, respectively, after silicate incorporation. Preliminary catalytic activity was also analyzed in a fixed-bed pilot plant. n-NiO/SiO2 nanoparticles were found to be the most efficient catalyst for thermocatalytic methane decomposition and generated 57.28% hydrogen at 730 °C. Physical and chemical characteristics of the fabricated nanocatalysts were determined using N2 adsorption-desorption measurement (Brunauer-Emmett-Teller method), X-ray diffraction (XRD), transmission electron microscopy (TEM), hydrogen temperature-programmed reduction (H2-TPR), and field-emission scanning electron microscopy (FESEM) analyses. Produced nano-carbon was inspected with TEM, FESEM and XRD.

本文言語英語
ページ(範囲)247-260
ページ数14
ジャーナルJournal of the Taiwan Institute of Chemical Engineers
61
DOI
出版ステータス出版済み - 4月 1 2016
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 化学工学(全般)

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