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    Oriented hydrocracking of naphthalene into high-value light aromatics over difunctional catalysts: the effect of hydrogen spillover and utilization of hydro-reaction characteristics for different active metals

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    Type
    Article
    Authors
    Cao, Zhengkai
    Zhang, Xia
    Guo, Rong
    Ding, Sijia
    Mei, Jinlin
    Wang, Xilong
    Zheng, Peng
    Fan, Jiyuan
    Xu, Chunming
    Duan, Aijun
    KAUST Grant Number
    OSR-2019-CPF-4103.2
    Date
    2020-09-29
    Online Publication Date
    2020-09-29
    Print Publication Date
    2020-11-06
    Embargo End Date
    2021-09-29
    Permanent link to this record
    http://hdl.handle.net/10754/665424
    
    Metadata
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    Abstract
    Serial difunctional catalysts supported on γ-Al2O3 and HY zeolite were synthesized and characterized systemically. The characterization results disclosed that hydrogen spillover existed in the NiMo and CoMo catalysts, and decreasing Ni/Mo and Co/Mo ratios could reduce hydrogen spillover. Meanwhile, the naphthalene hydrocracking behaviors over different catalysts were investigated and compared. The higher yield of cyclane for CoMo/AY catalysts demonstrated that hydrogen spillover could deeply hydrogenate naphthalene into cyclane. The combined catalysts of Ni/Y@CoMo/A, Ni/Y@NiMo/A and Ni/Y@Mo/A showed relatively lower conversions of naphthalene but higher yields of valued <C10 aromatics. The combined catalyst Ni/Y@CoMo/A presented the highest yield of light aromatics due to the appropriate reduction of hydrogen spillover and rational utilization of hydro-reaction characteristics for different active metals. Moreover, the stability of CoMo catalyst was higher than NiMo catalyst. The catalysts containing Co and Mo active metals presented low content of carbon deposition.
    Citation
    Cao, Z., Zhang, X., Guo, R., Ding, S., Mei, J., Wang, X., … Duan, A. (2020). Oriented hydrocracking of naphthalene into high-value light aromatics over difunctional catalysts: the effect of hydrogen spillover and utilization of hydro-reaction characteristics for different active metals. ACS Catalysis. doi:10.1021/acscatal.0c02929
    Sponsors
    This research was funded by the following projects:
    National Natural Science Foundation of China including Nos. 21878330, 21676298 and 21808079.
    CNPC Key Research Project numbered 2016E-0707.
    King Abdullah University of Science and Technology (KAUST), Office of Sponsored Research (OSR) under Award numbered OSR-2019-CPF-4103.2.
    Key Research and Development Program of Shandong Province numbered 2019GSF109115.
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Catalysis
    DOI
    10.1021/acscatal.0c02929
    Additional Links
    https://pubs.acs.org/doi/10.1021/acscatal.0c02929
    ae974a485f413a2113503eed53cd6c53
    10.1021/acscatal.0c02929
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