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Investigation of Surface Site of Ni Species on NiMo/Al2O3 Hydrodesulfurization Catalyst Sulfided at High-Pressure by Means of DRIFTS Combined With Low-Temperature NO Adsorption

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Abstract

A high-pressure DRIFT chamber for low temperature NO adsorption was newly constructed, and used to probe surface sites of the Ni-Mo-S phase on NiMo/Al2O3 catalysts sulfided at high-pressure (1.1 MPa, 673 K). A sharp IR band was evolved at 1,765 cm−1 after NO adsorption at 186–199 K, whereas this band was not observed after NO adsorption at ambient temperature. The band at 1,765 cm−1 was observed neither in the spectra of Mo/Al2O3, Ni/Al2O3 nor their physical mixture even after NO adsorption at 186–199 K, suggesting that this band results from adsorption of nitrosyl species on the Ni-Mo-S phase.

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Authors and Affiliations

  1. Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Aoba 6-6-07, Aramaki, Aoba-ku, Sendai, 980-8579, Japan

    Naoto Koizumi, Sungbong Jung, Yusuke Hamabe & Hikotaro Suzuki

  2. Akita National College of Technology, 1-1, Iijima-Bunkyo-cho, Akita, 011-8511, Japan

    Muneyoshi Yamada

Authors
  1. Naoto Koizumi
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  2. Sungbong Jung
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  3. Yusuke Hamabe
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  4. Hikotaro Suzuki
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  5. Muneyoshi Yamada
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Correspondence to Muneyoshi Yamada.

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Koizumi, N., Jung, S., Hamabe, Y. et al. Investigation of Surface Site of Ni Species on NiMo/Al2O3 Hydrodesulfurization Catalyst Sulfided at High-Pressure by Means of DRIFTS Combined With Low-Temperature NO Adsorption. Catal Lett 135, 175–181 (2010). https://doi.org/10.1007/s10562-010-0287-2

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  • DOI: https://doi.org/10.1007/s10562-010-0287-2

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