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Effect of a CeyNi1−yO2−δ solid solution on the oxidative cracking of vacuum residue over NiK/CeO2

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Abstract

In this study, a NiK/CeO2 catalyst was employed to investigate the interaction between Ni metal and CeO2 support and its effect on the oxidative cracking of vacuum residue (VR). In the reaction results, a large amount of light oils, including naphtha, diesel and VGO, was produced through oxidative cracking over CeO2, and the quality of the liquid products was significantly improved by hydrogenation. The interaction between Ni metal and CeO2 support induced the formation of a CeyNi1−yO2−δ solid solution and increased the number of oxygen vacancies, thus enhancing the oxidative cracking of VR. Further, the addition of NiK into the supports provided Ni metallic sites for hydrogenation, producing more liquid products with a high H/C ratio. As a result, the NiK/CeO2 catalyst showed a higher diesel yield (22.87%) than that without catalyst (9.14%).

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Acknowledgements

This research was supported by the Basic Science Research Program administered through the National Research Foundation of Korea (NRF) and funded by the Ministry of Education, Science and Technology (No. 2015R1D1A1A09058836).

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Authors and Affiliations

  1. School of Chemical Engineering, University of Ulsan, Daehakro 93, Nam-gu, Ulsan, 44610, South Korea

    Lien Thi Do & Eun Woo Shin

  2. School of Energy & Chemical Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, South Korea

    Chinh Nguyen-Huy

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  1. Lien Thi Do
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  2. Chinh Nguyen-Huy
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Correspondence to Eun Woo Shin.

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Do, L.T., Nguyen-Huy, C. & Shin, E.W. Effect of a CeyNi1−yO2−δ solid solution on the oxidative cracking of vacuum residue over NiK/CeO2 . Reac Kinet Mech Cat 122, 983–993 (2017). https://doi.org/10.1007/s11144-017-1252-5

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  • DOI: https://doi.org/10.1007/s11144-017-1252-5

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