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Issue 90, 2015
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Restraining deactivation of hierarchical zeolite supported NiW catalysts in the HDS of thiophene

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Abstract

NiW catalysts supported on γ-Al2O3 (NiW/Al2O3), commercial Beta (NiW/HB) and hierarchical Beta prepared by base–acid treatment (NiW/HB-M) were characterized by X-ray diffraction (XRD), N2 sorption, infrared spectroscopy (IR), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The catalytic performance of these catalysts was evaluated in the hydrodesulfurization (HDS) of thiophene. The results indicate that NiW/HB as well as NiW/HB-M endured important and rapid deactivation showing that the introduction of additional mesopores/macropores in the support could not prevent the deactivation tendency. Interestingly, NiW/HB or NiW/HB-M mixed with NiW/Al2O3 and the utilization of Na+-exchanged Beta as a support remarkably improved the anti-deactivation ability of the catalysts. As a result, the catalysts NiW/NaB-M (NiW catalyst supported on Na+-exchanged hierarchical Beta) and NiW/20HB-M (20% NiW/HB-M mixed with 80% NiW/Al2O3) gave superior catalytic activity than NiW/Al2O3.

Graphical abstract: Restraining deactivation of hierarchical zeolite supported NiW catalysts in the HDS of thiophene

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Publication details

The article was received on 22 Jun 2015, accepted on 27 Aug 2015 and first published on 28 Aug 2015


Article type: Paper
DOI: 10.1039/C5RA12029B
Author version available: Download Author version (PDF)
Citation: RSC Adv., 2015,5, 74150-74158
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    Restraining deactivation of hierarchical zeolite supported NiW catalysts in the HDS of thiophene

    Y. Wang, C. Lancelot, C. Lamonier, M. Yang, Y. Sun, J. C. Morin and A. Rives, RSC Adv., 2015, 5, 74150
    DOI: 10.1039/C5RA12029B

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