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Open AccessArticle

Catalytic Activities of Noble Metal Phosphides for Hydrogenation and Hydrodesulfurization Reactions

1
Applied Chemistry Research Unit, College of Environmental Technology, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto, Muroran 050-8585, Japan
2
Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto, Muroran 050-8585, Japan
3
Kuwait Institute for Scientific Research, 24885 SAFAT, Kuwait 13109, Kuwait
*
Author to whom correspondence should be addressed.
Catalysts 2018, 8(4), 160; https://doi.org/10.3390/catal8040160
Received: 27 February 2018 / Revised: 12 April 2018 / Accepted: 12 April 2018 / Published: 17 April 2018
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Abstract

In this work, the development of a highly active noble metal phosphide (NMXPY)-based hydrodesulfurization (HDS) catalyst with a high hydrogenating ability for heavy oils was studied. NMXPY catalysts were obtained by reduction of P-added noble metals (NM-P, NM: Rh, Pd, Ru) supported on SiO2. The order of activities for the hydrogenation of biphenyl was Rh-P > NiMoS > Pd-P > Ru-P. This order was almost the same as that of the catalytic activities for the HDS of dibenzothiophene. In the HDS of 4,6-dimethyldibenzothiophene (4,6-DMDBT), the HDS activity of the Rh-P catalyst increased with increasing reaction temperature, but the maximum HDS activity for the NiMoS catalyst was observed at 270 °C. The Rh-P catalyst yielded fully hydrogenated products with high selectivity compared with the NiMoS catalyst. Furthermore, XRD analysis of the spent Rh-P catalysts revealed that the Rh2P phase possessed high sulfur tolerance and resistance to sintering. View Full-Text
Keywords: noble metal phosphide; rhodium phosphide; hydrogenation; hydrodesulfurization; 4,6-dimethyldibenzothiophene noble metal phosphide; rhodium phosphide; hydrogenation; hydrodesulfurization; 4,6-dimethyldibenzothiophene
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Kanda, Y.; Kawanishi, K.; Tsujino, T.; Al-otaibi, A.M.; Uemichi, Y. Catalytic Activities of Noble Metal Phosphides for Hydrogenation and Hydrodesulfurization Reactions. Catalysts 2018, 8, 160.

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