Preparation of high-yield multi-walled carbon nanotubes by catalytic decomposition of mixture of natural gas and propylene and their electrothermal properties |
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Authors: | Jin-Jin Jiang Ying Shu Li Xu Wan-Peng Li Huan Zhang Wen-Jing Liu |
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Affiliation: | 1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, P.R. China;2. University of Chinese Academy of Sciences, Beijing, P.R. China;3. Chengdu Organic Chemicals Co. Ltd., Chinese Academy of Sciences, Chengdu, P.R. China;4. Chengdu Organic Chemicals Co. Ltd., Chinese Academy of Sciences, Chengdu, P.R. China |
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Abstract: | AbstractMulti-walled carbon nanotubes (MWNTs) with high-yield were prepared by pyrolysis of mixture of natural gas (NG) and propylene (C3H6) over Fe-Ni/Al2O3-MgO catalyst. For C3H6/NG flow rate ratio ranging from 0 to 0.33, the carbon yield was increased from 903% to 4400%. The synthesized MWNTs after purification were dispersed by ball milling method and mixed with waterborne polyurethane to fabricate the electrothermal film. The mass fraction of CNT filler in the cured electrothermal film was controlled at 50%. The coating after drying was ca. 6?μm and the coating’s volume resistivity was 0.053 Ω·cm. The time-dependent temperature curves indicated that the heating rate of the electrothermal film was very fast under different low voltage and the steady-state temperatures were achieved within 100?s. The steady-state temperature reached 47.9?°C, 76.8?°C, and 102.8?°C, respectively at 10?V, 15?V, and 18?V. |
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Keywords: | Carbon nanotubes natural gas propylene electrothermal film low voltage |
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