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Catalytic Production of Carbon Nanotubes by Decomposition of CH4 over the Pre-reduced Catalysts LaNiO3, La4Ni3O10, La3Ni2O7 and La2NiO4

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Abstract

A large amount of more graphitic carbon nanotubes with a narrow size distribution was produced from catalytic decomposition of CH4 over pre-reduced LaNiO3, La4Ni3O10, La3Ni2O7 and La2NiO4. The structure and component of fresh and reduced LaNiO3, La4Ni3O10, La3Ni2O7 and La2NiO4 were determined by X-ray diffraction (XRD). The carbon nanotubes obtained were characterized by means of transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Thermal oxidation of carbon nanotubes in air was made by thermogravimetric experiments (TG). The results revealed that the value of La/Ni in different catalyst precursors influences the diameter distribution and graphitic degree of carbon nanotubes. Lower La/Ni leads to wider diameter and higher graphitic degree of carbon nanotubes.

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Authors and Affiliations

  1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, PR China

    H. Li, Q. Liang, L.Z. Gao, S.H. Tang, Z.Y. Cheng, B.L. Zhang & Z.L. Yu

  2. Chemistry Department, Hong Kong Baptist University, Hong Kong, PR China

    C.F. Ng & C.T. Au

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  1. H. Li
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  2. Q. Liang
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  3. L.Z. Gao
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  4. S.H. Tang
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  5. Z.Y. Cheng
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  6. B.L. Zhang
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  7. Z.L. Yu
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  8. C.F. Ng
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  9. C.T. Au
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Li, H., Liang, Q., Gao, L. et al. Catalytic Production of Carbon Nanotubes by Decomposition of CH4 over the Pre-reduced Catalysts LaNiO3, La4Ni3O10, La3Ni2O7 and La2NiO4. Catalysis Letters 74, 185–188 (2001). https://doi.org/10.1023/A:1016618200835

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  • DOI: https://doi.org/10.1023/A:1016618200835

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