A new synthesis of highly active Ni2P/Al2O3 catalyst by liquid phase phosphidation for deep hydrodesulfurization

Cho, Kye-Sung; Seo, Hye-Ryun; Lee, Yong‐Kul

doi:10.1016/j.catcom.2010.10.016

Cited by 45 publications

(13 citation statements)

References 15 publications

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“…But this method require s a large amount of a P precursor. Furthermore, the washed phosphides were impregnated into Al2O3 to obtain the supported catal yst [35], which is a complicated method. On the other hand, some reports described synthesis of Ni2P catal yst using triphenylphosphine ((C 6 H5)3P, TPP) [36,37], but this method was also carried out in trioct ylamine solution under N2 flow.…”

Section: Introductionmentioning

confidence: 99%

Low-temperature synthesis of rhodium phosphide on alumina and investigation of its catalytic activity toward the hydrodesulfurization of thiophene

Kanda

Matsukura

Sawada

et al. 2016

Applied Catalysis A: General

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In this study, the low-temperature synthesis of rhodium phosphide (Rh2P) on alumina (Al2O3) using triphenylphosphine (TPP) as a phosphorus (P) source and its catal ytic activit y toward 2 hydrodesulfurization (HDS) were investigated to prepare a highl y active HDS catal yst. TPP was more easil y reduced than phosphate, and Rh2P was formed in the P (T)/Rh/Al2O3 catal yst prepared from TTP at lower temperature as compared with the temperature required by Rh-P(A)/Al2O3 catal yst prepared from a phosphate precursor. However, after reduction at a low temperature (450 °C), excess P covered the surface of Rh2P. The optimal reduction temperature for HDS rate of the P(T)/Rh/Al 2 O3 catal yst (650 °C) was lower than that of the Rh-P(A)/Al2O3 catal yst (800 °C). Furthermore, t his temperature was slightly hig her than the optimal reduction temperature for CO uptake (600 °C). These results are explained as follows: HDS rate is increased by both elimination of excess P on the active sites at higher reduction temperature s and enhancement of the crystallinit y of Rh2P. Furthermore, because the particle size of the P(T)/Rh/Al2O3 catal yst (ca. 1.2 nm) was substantiall y smaller than that of the Rh-P(A)/Al2O3 catal yst, the P(T)/Rh/Al2O3 catal yst exhibited greater HDS rate compared with the Rh-P(A)/Al2O3 catal yst.

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Section: Introductionmentioning

confidence: 99%

Low-temperature synthesis of rhodium phosphide on alumina and investigation of its catalytic activity toward the hydrodesulfurization of thiophene

Kanda

Matsukura

Sawada

et al. 2016

Applied Catalysis A: General

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“…Alternative sources of phosphorus such as phosphite, hypophosphite, and phosphine require lower reduction temperatures, which is beneficial as higher dispersion of the final metal phosphide phase is possible [22]. Most frequently silica is used as catalyst support, but alumina was also evaluated in some special cases [23,24].…”

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confidence: 99%

Preparative Aspects of Supported Ni2P Catalysts for Reductive Upgrading of Technical Lignin to Aromatics

Korányi

Hensen

2017

Catal Lett

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“…Much attention is currently focused on studying the possibility of using nickel phosphides in the field of heterogeneous catalysis in biomass hydrotreating reactions. Namely, nickel phosphides Ni 3 P, Ni 12 P 5 , Ni 2 P and Ni 5 P 4 are promising catalysts for hydrodeoxygenation [8][9][10], hydrodesulfurization [11][12][13][14][15][16] and other hydrogenation processes [17][18][19][20], due to their higher activity and stability compared to catalysts based on purely metallic Ni.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Composition Study of Electrochemically Deposited Ni-P Coating with Increased Surface Area

et al. 2021

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Nickel phosphides NixPy are a promising family of binary compounds that have shown much promise in various fields of technology, including energy storage, light absorption and heterogeneous catalysis in the reactions of biomass hydrogenation. The performance of NixPy-containing materials depends greatly on their morphology and phase composition and, in turn, on the synthesis technique. In this work, we have employed the electroplating approach to synthesize a Ni-P coating, which was treated with nitric acid in order to develop its surface area and enrich it with phosphorus. We have employed scanning electron microscopy, X-ray diffraction and 31P nuclear magnetic resonance techniques to characterize the particles separated from the coating with ultrasound for the convenience of the study. According to experimental data, the obtained powder contained a mixture of Ni3P and phosphorus oxides, which transformed into nickel phosphide phases richer with phosphorus, such as Ni5P2 and Ni12P5, after treatment at elevated temperatures. Thus, we have demonstrated that electroplating followed by acid treatment is a feasible approach for the synthesis of Ni-P coatings with increased surface area and variable phase composition.

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A new synthesis of highly active Ni2P/Al2O3 catalyst by liquid phase phosphidation for deep hydrodesulfurization

Cited by 45 publications

References 15 publications

Low-temperature synthesis of rhodium phosphide on alumina and investigation of its catalytic activity toward the hydrodesulfurization of thiophene

Low-temperature synthesis of rhodium phosphide on alumina and investigation of its catalytic activity toward the hydrodesulfurization of thiophene

Preparative Aspects of Supported Ni2P Catalysts for Reductive Upgrading of Technical Lignin to Aromatics

Synthesis and Composition Study of Electrochemically Deposited Ni-P Coating with Increased Surface Area

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