Hydrogen and Carbon Nanofiber Coproduction by Methane Decomposition over Ni/Diatomite Catalysts

IF 7.1 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Dun Li, Heming Dong, Guoqiang Song, Qian Du, Sibudjing Kawi, Jianmin Gao
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Abstract

Catalytic decomposition of methane (CDM) is a unique potential technology, producing only COx-free hydrogen and solid carbon. Reducing the cost of catalysts and finding application scenarios for the large amount of carbon byproducts are unavoidable issues in the CDM application process. Therefore, natural diatomite materials, which are abundant and environmentally friendly, were used as catalyst support in this paper. Nickel phyllosilicates were synthesized on the surface of diatomite by a hydrothermal method, and well-dispersed Ni/diatomite catalysts were obtained by high-temperature reduction. The maximum methane conversion of the catalyst was 30% at 500 °C, and the CNFs were uniformly adhered to the diatomite support surface. Both metal loading and temperature could affect hydrogen yield and structural characterization of CNFs. Theoretically, this CNFs/diatomite composite can be added to natural rubber as a filler and enhance its heat dissipation properties. In addition, no CO2 production was detected during the reaction. Our results provide new insights into the preparation of catalysts and carbon production application of CDM, which can further improve the economics of CDM.

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来源期刊
ACS Sustainable Chemistry & Engineering
ACS Sustainable Chemistry & Engineering CHEMISTRY, MULTIDISCIPLINARY-ENGINEERING, CHEMICAL
CiteScore
13.80
自引率
4.80%
发文量
1470
审稿时长
1.7 months
期刊介绍: ACS Sustainable Chemistry & Engineering is a prestigious weekly peer-reviewed scientific journal published by the American Chemical Society. Dedicated to advancing the principles of green chemistry and green engineering, it covers a wide array of research topics including green chemistry, green engineering, biomass, alternative energy, and life cycle assessment. The journal welcomes submissions in various formats, including Letters, Articles, Features, and Perspectives (Reviews), that address the challenges of sustainability in the chemical enterprise and contribute to the advancement of sustainable practices. Join us in shaping the future of sustainable chemistry and engineering.
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