A novel method for preparing an active nickel phosphide catalyst for HDS of dibenzothiophene

Cecilia, Juan Antonio; Infantes‐Molina, Antonia; Rodríguez‐Castellón, Enrique; Jiménez‐López, Antonio

doi:10.1016/j.jcat.2009.02.013

Cited by 220 publications

(146 citation statements)

References 42 publications

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“…The difference in Ni/P molar phosphorus in the form of volatile phosphorous-containing compounds (P 4 , PH 3 , P 2 H 6 , etc.) during the temperature-programmed reduction of NiP x O y /SiO 2 precursor [75][76][77]. PH 3 or P 2 H 6 species produced in course of temperature-programmed reduction (TPR) could react with nickel-containing oxide precursors [78] or metallic Ni, resulting in nickel phosphide formation [79][80][81].…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Synergetic Effect of Ni2P/SiO2 and γ-Al2O3 Physical Mixture in Hydrodeoxygenation of Methyl Palmitate

et al. 2017

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Abstract:The Ni 2 P/SiO 2 catalyst, which was prepared by in situ temperature-programmed reduction and in the mixture with the inert (SiC, SiO 2 ) or acidic (γ-Al 2 O 3 ) material was studied in methyl palmitate hydrodeoxygenation (HDO). Methyl palmitate HDO was carried out at temperatures of 270-330 • C, H 2 /feed volume ratio of 600 Nm 3 /m 3 , and H 2 pressure of 3.0 MPa. Ni 2 P/SiO 2 catalyst, diluted with γ-Al 2 O 3 showed a higher activity than Ni 2 P/SiO 2 catalyst diluted with SiC or SiO 2 . The conversion of methyl palmitate increased significantly in the presence of γ-Al 2 O 3 most probably due to the acceleration of the acid-catalyzed reaction of ester hydrolysis. The synergism of Ni 2 P/SiO 2 and γ-Al 2 O 3 in methyl palmitate HDO can be explained by the cooperation of the metal sites of Ni 2 P/SiO 2 and the acid sites of γ-Al 2 O 3 in consecutive metal-catalyzed and acid-catalyzed reactions of HDO. The obtained results let us conclude that the balancing of metal and acid sites plays an important role in the development of the efficient catalyst for the HDO of fatty acid esters over supported phosphide catalysts.

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Section: Catalyst Characterizationmentioning

confidence: 99%

Synergetic Effect of Ni2P/SiO2 and γ-Al2O3 Physical Mixture in Hydrodeoxygenation of Methyl Palmitate

et al. 2017

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“…3). [25][26][27] In addition, any noticeable peak around at 129.5 eV (Ni x P y state) could not be found in the P 2p region (Fig. 2 b), [25][26][27] implying that Ni x P y species on the surfaces of both samples were oxidized into the oxidic-Ni species upon postannealing processes.…”

Section: Methodsmentioning

confidence: 94%

Catalytic NiO Filter Supported on Carbon Fiber for Oxidation of Volatile Organic Compounds

Sim¹,

Seo²,

Jeong³

et al. 2013

Bulletin of the Korean Chemical Society

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Carbon-fiber-supported NiO catalytic filters for oxidation of volatile organic compounds were prepared by electroless Ni-P plating and subsequent annealing processes. Surface structure and crystallinity of NiO film on carbon fiber could be modified by post-annealing at different temperatures (500 and 650 o C). Catalytic thermal decompositions of toluene over these catalytic filters were investigated. 500 o C-annealed sample showed a higher catalytic reactivity toward toluene decomposition than 650 o C-annealed one under same conditions, despite of its lower surface area and toluene adsorption capacity. X-ray diffraction and X-ray photoelectron spectroscopy studies suggest that amorphous structures of NiO on 500 o C-annealed catalyst caused the higher reactivity for oxidation of toluene than that of 650 o C-annealed sample with a higher crystallinity.

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“…In addition, a broad shake-up peak appears at the binding energy of ~5.0 eV, which is higher than that of Ni 2+ [16,17]. These peaks can be assigned to its satellite peaks, although they are located close to those of Ni 3+ and nickel oxysulfide [18,19]. Moreover, the other broad peaks at higher binding energy are ascribed to the Ni 2p of nickel oxide [20].…”

Section: Catalystmentioning

confidence: 94%

High Active Zn/Mg-Modified Ni–P/Al2O3 Catalysts Derived from ZnMgNiAl Layered Double Hydroxides for Hydrodesulfurization of Dibenzothiophene

et al. 2017

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A series of ZnMgNiAl layered double hydroxides (LDHs) containing 20 wt.% Ni and different Zn/Mg molar ratios were prepared by a coprecipitation method, and then were introduced with H 2 PO 4 − via a microwave-hydrothermal method. With the resulting mixtures as the precursors, Zn/Mg-modified ZnMgNi-P/Al 2 O 3 catalysts were prepared. The Zn/Mg molar ratio affected the formation of Ni 2 P and Ni 12 P 5 in nickel phosphides. The ZnMgNi-P/Al 2 O 3 catalyst with a Zn/Mg molar ratio of 3:1 exhibits the best dibenzothiophene hydrodesulfurization (HDS) activity. Compared with the Ni-P/Al 2 O 3 catalyst prepared from the impregnation method, the ZnMgNi-P/Al 2 O 3 catalyst shows a higher HDS activity (81.6% vs. 54.3%) and promotes the direct desulfurization of dibenzothiophene.

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A novel method for preparing an active nickel phosphide catalyst for HDS of dibenzothiophene

Cited by 220 publications

References 42 publications

Synergetic Effect of Ni2P/SiO2 and γ-Al2O3 Physical Mixture in Hydrodeoxygenation of Methyl Palmitate

Synergetic Effect of Ni2P/SiO2 and γ-Al2O3 Physical Mixture in Hydrodeoxygenation of Methyl Palmitate

Catalytic NiO Filter Supported on Carbon Fiber for Oxidation of Volatile Organic Compounds

High Active Zn/Mg-Modified Ni–P/Al2O3 Catalysts Derived from ZnMgNiAl Layered Double Hydroxides for Hydrodesulfurization of Dibenzothiophene

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