Flower-like nickel phosphide catalyst for petroleum resin hydrogenation with enhanced catalytic activity, hydrodesulfurization ability and stability
[Display omitted] •The flower-like nickel phosphide catalysts were prepared by a hydrotalcite strategy.•Ni2P/Al2O3 catalyst showed excellent catalytic activity and desulfurization ability.•The outstanding performance ascribed to the rich active Niδ+ species.•The enhanced stability was due to strong...
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Veröffentlicht in: | Chemical engineering science 2022-12, Vol.264, p.118180, Article 118180 |
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Sprache: | eng |
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•The flower-like nickel phosphide catalysts were prepared by a hydrotalcite strategy.•Ni2P/Al2O3 catalyst showed excellent catalytic activity and desulfurization ability.•The outstanding performance ascribed to the rich active Niδ+ species.•The enhanced stability was due to strong interaction between active sites and support.
The catalytic hydrogenation of petroleum resin (PR) to high value-added hydrogenated PR (HPR) represents a forward-looking technology for upgrading the pyrolysis petroleum by-product. Herein, flower-like and pure-phase supported nickel phosphide catalysts were controllably fabricated through a hydrotalcite strategy with red phosphorous as the P source. The PR hydrogenation activity of the catalysts followed the order of Ni2P/Al2O3 > NiP2/Al2O3 > Ni/Al2O3 > imp-Ni2P/Al2O3 catalysts (prepared by the impregnation method). Such enhanced performance of Ni2P/Al2O3 could be ascribed to small nickel phosphide particle size and rich active Niδ+ species. Notably, the sulfur contents of PR were effectively reduced from 55.4 (C5PR) and 72.3 ppm (C9PR) to 3.8 and 7.9 ppm after hydrogenation by Ni2P/Al2O3. Meanwhile, Ni2P/Al2O3 also exhibited good stability with the hydrogenation degree of HC5PR maintaining at 94.39 % after 100 h. Our work provides a promising nickel phosphide catalyst with outstanding hydrogenation activity, hydrodesulfurization ability, and stability toward PR hydrogenation. |
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ISSN: | 0009-2509 1873-4405 |
DOI: | 10.1016/j.ces.2022.118180 |