Ni2P Particles Research Articles

Novel FeNiP–FeNi–C nanofiber as an outstanding electrocatalyst for oxygen evolution reaction

Developing stable, highly active, and economical non-precious metal catalysts for the oxygen evolution reaction (OER) has been highly demanded in the new energy field since it can meet the industrial demands of large-scale electrocatalytic water splitting. A novel FeP/Ni2P/Fe0.64Ni0.36/C (FeNiP–FeNi–C) nanofiber was prepared by electrospinning and high-temperature phosphating. Notably, the good dispersion of FeP, Ni2P, and FeNi alloy nanoparticles in the nanocarbon fiber greatly increased the number of electroactive sites, and the synergistic effect between the FeP/Ni2P heterogeneous interface and FeNi alloy significantly improved the inherent activity of each site. Moreover, the carbon nanofibers enhanced the long-term durability of the catalyst by preventing the corrosion of the FeP, Ni2P, and FeNi alloy particles. Therefore, the optimal FeNiP–FeNi–C catalyst revealed exceptionally high OER activity, with overpotentials of 364 mV and 236 mV at 50 mA cm−2 and 10 mA cm−2 respectively, and the slope of Tafel of 61.00 mV·dec−1. This catalyst performs significantly better than commercial RuO2 catalysts in alkaline electrolytes. The results of this study offer a novel perspective for the mass production of non-precious metal OER high-efficiency electrocatalysts.

Construction of Ni2P-MoC/Coal-Based Carbon Fiber Self-Supporting Catalysts for Enhanced Hydrogen Evolution.

Efficient and inexpensive electrocatalysts play an important role in the hydrogen evolution reaction (HER) of electrolytic water splitting. Herein, Ni2P-MoC/coal-based carbon fiber (Ni2P-MoC/C-CF) self-supporting catalysts were obtained by low-temperature phosphorization and high-temperature carbonization. The Mo source and oxidized coal were uniformly dispersed in the carbon support by electrospinning technology. A precursor of Ni was introduced by the impregnation method. The synergistic effect of MoC and Ni2P may reduce the strong hydrogen adsorption capacity of pure MoC and provide a fast hydrogen release process. In addition, the C-CFs prepared by electrospinning can not only prevent the agglomeration of MoC and Ni2P particles at a high temperature but also provide a self-supporting support for the catalyst. As a result, the catalytic performance of the HER was improved greatly, and a low overpotential of 112 mV at 10 mA cm-2 was exhibited stably by the Ni2P-MoC/C-CFs. This work not only converts coal into coal-based carbon materials but also provides a feasible pathway for the rational design of large-scale molded hydrogen electrocatalysts.

Effect of particle size on the sulfur resistance of nickel phosphide hydrodesulfurization catalysts

The effect of particle size on sulfur resistance of nickel phosphide (Ni2P) catalysts for the hydrodesulfurization (HDS) reaction was probed using Ni2P nanoparticles encapsulated in mesoporous silica (Ni2P@mSiO2). The Ni2P@mSiO2 nanocatalysts, having well-defined particle sizes of 5.9, 11.2 and 17.1 nm, were investigated for the HDS of dibenzothiophene (DBT) in the presence of a co-feed of H2S. The Ni2P@mSiO2 nanocatalysts were characterized by a range of techniques including CO chemisorption to determine active site densities, and sulfur quantification to probe sulfur incorporation during HDS measurements or treatment in a mixture of H2S/H2. The extent of sulfur deactivation depended strongly on Ni2P particle size, with Ni2P@mSiO2-5.9 nm showing little change in DBT HDS activity or turnover frequency (TOF) before and after co-feeding H2S, while Ni2P@mSiO2-17.1 nm exhibited a significant decrease in HDS activity and TOF after co-feeding H2S. Further, the Ni2P@mSiO2-5.9 nm nanocatalyst exhibited stable HDS activity when brought on-stream, while Ni2P@mSiO2-17.1 nm experienced a 40% loss of HDS activity during the initial 3 h on-stream and then stable activity thereafter. The composition of the phosphosulfide phase (NixPySz layer) formed on the surface of the Ni2P particles under HDS reaction conditions also depended strongly on particle size, with the Ni2P@mSiO2-5.9 nm (S/Nisurf = 0.16) having a substantially lower S content than the Ni2P@mSiO2-17.1 nm (S/Nisurf = 0.53). These results indicate that the surface restructuring of Ni2P associated with formation of a phosphosulfide layer is particle size dependent and leads to active sites with significantly different intrinsic activities for the HDS reaction.

High-efficiency catalytic pyrolysis of palm kernel shells over Ni2P/nitrogen-doped activated carbon catalysts

Catalytic pyrolysis is a cost-effective technology for high-quality biofuel production. Biomass is converted to bio-oil by a thermal process in the presence of a catalyst. Catalyst development influences the reaction-pathway control to form a specific product. Here, the catalytic pyrolysis of palm kernel shells was investigated on melamine-doped activated-carbon-supported Ni2P. Different amounts of melamine (25–100 wt% support) were loaded on activated carbon by impregnation and carbonization, while the Ni2P catalyst was fabricated by the co-impregnation of nickel nitrate and ammonium hydrogen phosphate. The interaction between nitrogen-containing functional groups on the carbon surface and Ni2P caused a uniform dispersion of small-sized crystalline Ni2P particles on the activated-carbon surface, reduced from 28.91 nm to 10.85 nm, as shown by transmission electron microscopy analysis. The Ni2P/CN catalyst exhibited high oxygen removal and alkylphenol selectivity (more than 63%) in the liquid product at 350 °C under atmospheric pressure. Therefore, the Ni2P/CN catalyst described here exhibits good potential for high-selectivity catalytic pyrolysis of biomass to produce phenolic compounds, which have wide application in monomers and fuel additives.

Ni2P/Beta@SBA-16 core-shell catalyst with tunable shell thickness for the hydrodenitrogenation of quinoline

A series of core-shell structural hydrodenitrogenation (HDN) catalyst supports, using H-Beta zeolite nanoparticles as the core and tunable mesoporous materials SBA-16 thin film thickness as shell, were designed and controllably synthesized. The corresponding Ni2P catalyst were prepared, and their catalytic performances were tested for quinoline HDN. It was found that the high external surface area provided by the mesoporous shell layer of the core-shell catalyst favored the formation of Ni2P nanoparticles with more uniform particle size. The Py-IR result indicates that the SBA-16 shell thickness plays an important role in influencing the ratio of the amount of Bronsted and Lewis acid sites on the catalyst. The H2-TPR results indicates that the introduction of core-shell structure can adjust the metal-support interactions (MSI) of materials. The core-shell support with suitable shell thickness (70 nm) exhibits a wide pore structure, large surface area and sufficient amounts of Lewis and Bronsted acid sites. These properties contribute to the formation of tiny and size homogeneous (4.6 nm) Ni2P nanoparticles. Smaller Ni2P particles present more active sites, which increases catalytic activity. The Ni2P/H-Beta@SBA-16–2 catalyst with the most suitable shell thickness exhibited a higher reaction rate constant and TOF for HDN reaction of quinoline.

A facile synthesis of sub-10 nm Ni2P/g-C3N4 photocatalytic composite with ohmic contact for clean H2-energy generation under visible light irradiation

It is very attractive to find a cheap and efficient cocatalyst for enhancing the H2 generation of graphitic carbon nitride (CN) under visible light. To achieve that, we proposed a novel two-step method to deposit sub-10 nm metallic Ni2P particles on the surface of CN sheets for a maximized interfacial contact. Characteristic results confirmed the establishment of ohmic heterojunction upon Ni2P-modification of CN, which deemed to be an effective measure to alleviate photo-charges recombination. In addition to facilitating spatial separation of charges, Ni2P could also enhance the optical properties of CN while reducing its impedance for interfacial electron shuttling. Better still, the P-end of Ni2P is highly electronegative, offering desirable H+-capturing capability for enhanced H2 generation. These give rise to an improved H2 production of Ni2P/CN composite, optimally at 645.3 μmol g−1·h−1 as compared to immeasurable H2 yielded by the pristine CN. Such photocatalytic performance is even comparable to the Pt-modified CN photocatalyst (640.6 μmol g−1·h−1). In recyclability test, a notable activity suppression of 33.17% was recorded after four reaction cycles. This can be ascribed to the pronounced photo-corrosion of the Ni2P cocatalyst during photoreaction. Nonetheless, a remarkably high H2 generation (1328.6 μmol g−1 in 3 h) was still attained at 4th cycle. This justifies the effectiveness of our synthesized Ni2P cocatalyst in enhancing H2 generation of CN under visible light irradiation.

Preparation of ultrasmall Ni2P nanoparticles with low P/Ni ratios supported on SiO2 and an Al2O3-B2O3 mixed oxide for dibenzothiophene hydrodesulfurization

Ultrasmall Ni2P nanoparticles with dimensions around 3 ∼ 5 nm supported on SiO2 (Ni-P/SiO2) and an Al2O3-B2O3 mixed oxide (Ni-P/AB) were prepared by a temperature-programmed reduction method using mixtures of Ni(NO3)2 and H3PO3 as precursors. The minimum P/Ni ratios of the precursors needed for the formation of phase-pure Ni2P on SiO2 and Al2O3-B2O3 were as low as 0.8 and 0.7, respectively. The introduction of B2O3 to γ-Al2O3 inhibited the formation of AlPO4 during the reduction process. For such small particles, the effect of Ni2P-support interaction became significant, resulting in different properties of the Ni-P/SiO2 and Ni-P/AB catalysts as well as different performances in the hydrodesulfurization of dibenzothiophene. The ultrasmall Ni2P nanoparticles in the Ni-P/SiO2 catalysts that possess weak Ni2P-support interaction were as active as large Ni2P particles on SiO2 and a macro-mesoporous Al2O3. These catalysts were one order of magnitude more active than the Ni-P/AB catalysts with strong Ni2P-support interaction.

Controllable synthesis of nanostructured nickel phosphosulfide by reduction of mixtures of Na4P2S6 and NiCl2 with low P/Ni ratios in hydrogen plasma

Transition-metal phosphides and phosphosulfides constitute a class of versatile and promising catalysts in the field of enery production. The preparation of nanostructured phosphides and phosphosulfides is chanllenging because the thermal reduction of phosphate precursors requires high temperatures. In the present work, nanostructured nickel phosphosulfide catalysts composed of Ni2P particles surrounded by a distinct sulfur-containing layer were prepared by reduction of mixtures of Na4P2S6 and NiCl2 in H2 plasma. The minimum P/Ni ratio needed for the formation of nickel phosphosulfide was between 4/7 and 2/3, and the input voltage of the plasma generator (Vin) should be higher than 40 V. The control of the particle sizes of the nickel phosphosulfide catalysts was realized by simply regulating Vin. Another minor factor affecting the particle size was H2 flow rate. The actual precursor for the formation of nickel phosphosulfide can be Ni2P2S6, which underwent fast reduction in H2 plasma to yield NiS. In the hydrodesulfurization of dibenzothiophene, the nanostructured nickel phosphosulfide catalyst exhibited higher activity and hydrogenation pathway (HYD) selectivity than the one with large particle size. The optimal P/Ni ratio of the nickel phosphosulfide catalysts was found to be 4/5, and the HYD pathway was more favored by the increase in the P/Ni ratio than the direct desulfurization pathway.

Chelators to assist the high dispersion of Ni2P particles over mesoporous silica nanospheres for hydrogenating reaction

Ni2P supported catalysts exhibit high catalytic activities in hydrogenation reaction, of which the particle sizes of Ni2P active phases are the key influential factor. This research focus on the effect of chelators on the size of Ni2P particles over wrinkle silica nanoparticles (WSNs) by introducing chelating agents EDTA and NTA during impregnation process. The characterization results show that chelators modified catalysts possess smaller size of Ni2P particles than the unmodified Ni2P catalysts. Among all the synthesized catalysts, the EDTA modified Ni2PE(1.5)/WSNs catalyst possesses smallest average particle size of Ni2P, only 2.6 nm. Moreover, the Ni2P catalysts with the assistance of EDTA exhibits better catalytic activity than that of NTA under high reaction temperature, which can be ascribed to the strong bonding between EDTA and Ni. And the EDTA modified Ni2PE(1.5)/WSNs catalyst shows highest hydrogenation ability, almost reaching 100% decalin selectivity.

Comparative study of hydrodeoxygenation performance over Ni and Ni2P catalysts for upgrading of lignin-derived phenolic compound

To deeply understand the different hydrodeoxygenation (HDO) behavior of the monometallic Ni and Ni2P catalysts in HDO processes, the Ni/SiO2 and Ni2P/SiO2 catalysts were prepared, respectively. The as-prepared catalysts were characterized by X-ray diffraction (XRD), N2 adsorption–desorption, X-ray photoelectron spectra (XPS), H2 temperature-programmed reduction (H2-TPR), transmission electron microscope (TEM), NH3 temperature-programmed desorption (NH3-TPD), and CO uptakes. Taking the lignin-derived phenolic compound as raw material, the HDO performance and reaction route of the monometallic Ni and Ni2P catalysts were compared. The results showed that the phosphorization contributed to highly dispersion of active sites, formation of smaller active sites and significantly enhanced acid sites, showing Ni2P/SiO2 catalyst is a bifunctional metal–acid catalyst. For both of the Ni/SiO2 and Ni2P/SiO2 catalysts, the HDO of m-cresol mainly proceeded by the hydrogenation (HYD) step. However, the acid sites on Ni2P/SiO2 catalyst can significantly promote the conversion of oxygenated 3-methylcyclohexanol (MCHnol) to deoxygenated methylcyclohexane (MCH) owing to its strong hydrogenolysis of C–OH bond originated from the bifunctional metal–acid sites. In addition, the unique electron structure of Ni2P phase involved in two different types of sites (tetrahedral Ni(I) and square pyramidal Ni(II)) and the highly dispersed smaller Ni2P particles also contributed to the outstanding HDO performance. Density functional calculation (DFT) calculations clarified that the Ni2P active phase possessed prior ability to cleavage of C–OH bond in comparison with the metallic Ni species. As a result, Ni2P/SiO2 catalyst showed a significantly higher selectivity to MCH (96.3 %) than that of Ni/SiO2 (14.1 %) catalyst at the conditions of 250 ℃ for 240 min.

Preparation of Ni2P nanochains with controllable geometry for the hydrogen evolution reaction by application of a high magnetic field

In this work, a new method for controlling the morphology of Ni2P materials by using a high magnetic field (HMF) was proposed. In HMF, the Ni2P nanoparticles become smaller and self-assemble into one-dimensional nanochain. The nucleation, growth, and assembly mechanism of Ni2P in HMF was revealed. Thermodynamic calculations show that the magnetic Gibbs free energy of the reaction process increases by 219 kJ mol−1 in 6T HMF and the saturation magnetization of Ni2P is 12 times higher than without HMF. In addition, the obtained Ni2P nanochains exhibit better electrocatalytic activity than Ni2P nanoparticle, the overpotential of Ni2P nanochain was 231 mV lower than that of Ni2P particles (200 mA cm−2). The theoretical and experimental results both indicate that magnetic field can control material structure and properties effectively.

Chelators to Assist the High Dispersion of Ni2p Particles Over Mesoporous Silica Nanospheres for Hydrogenating Reaction

Chelators to Assist the High Dispersion of Ni2p Particles Over Mesoporous Silica Nanospheres for Hydrogenating Reaction

One-pot upgrading of coconut coir lignin over high-efficiency Ni2P catalysts

The utilization of lignin as a source of phenolic compounds requires highly efficient and selective depolymerization catalysts. Herein, lignin depolymerization was investigated over Ni2P catalysts supported on nitrogen-doped activated carbon (Ni2P/AC_N). The catalysts were prepared by an incipient wetness co-impregnation method followed by reduction with H2 gas. The presence of nitrogen-containing functional groups on the activated carbon surface resulted in the dispersion of Ni2P particles. The good distribution and small crystal size of Ni2P significantly increased the active surface area, which enhanced both the catalytic activity and phenol selectivity. Investigations of the catalytic activity at different reaction temperatures and lignin-to-catalyst ratios using pyrolysis–gas chromatography/mass spectrometry revealed that the highest phenol selectivity of 80% was achieved using the Ni2P/AC_N25% catalyst. The proposed reaction mechanism involves lignin depolymerization via C–O and C–C cleavage with subsequent phenol formation by demethoxylation. Owing to its high phenol selectivity, the Ni2P/AC_N catalyst has good potential for the transformation of lignin to phenol.

Crystal and electronic facet analysis of ultrafine Ni2P particles by solid-state NMR nanocrystallography

Structural and morphological control of crystalline nanoparticles is crucial in the field of heterogeneous catalysis and the development of “reaction specific” catalysts. To achieve this, colloidal chemistry methods are combined with ab initio calculations in order to define the reaction parameters, which drive chemical reactions to the desired crystal nucleation and growth path. Key in this procedure is the experimental verification of the predicted crystal facets and their corresponding electronic structure, which in case of nanostructured materials becomes extremely difficult. Here, by employing 31P solid-state nuclear magnetic resonance aided by advanced density functional theory calculations to obtain and assign the Knight shifts, we succeed in determining the crystal and electronic structure of the terminating surfaces of ultrafine Ni2P nanoparticles at atomic scale resolution. Our work highlights the potential of ssNMR nanocrystallography as a unique tool in the emerging field of facet-engineered nanocatalysts.

SRGO hydrotreating over Ni-phosphide catalysts on granulated Al2O3

Ni-phosphides present a promising alternative to the conventional hydrotreatment NiMo sulfides. The hydrotreatment catalysts are supported on Al2O3 granules, and the similarly Al2O3 supported Ni-phosphide catalysts provide an interesting case for comparison. In this work the Ni-phosphide catalysts supported on Al2O3 granules were prepared using two procedures: 1) temperature-programmed reduction of “phosphite”-type precursor in hydrogen flow (TPR_I catalyst), 2) treatment of Ni nanoparticles with triphenylphosphine solution at elevated temperature (LP catalyst). The catalysts were characterized by ICP-AES chemical analysis, N2 physisorption, XRD, TEM, XPS, 27Al MAS NMR. The Ni2P particles were found in LP samples, while TPR method gives the mixture of Ni12P5 and Ni2P particles and amorphous AlPO4 on the alumina surface. The behavior of granulated Ni phosphide and conventional sulfided NiMo/Al2O3 catalysts was compared in hydroprocessing of straight-run gas oil (SRGO) at 340 °C, 4 MPa, V(H2)/V(feed) - 400 Nm3/m3, LHSV - 1,5 h−1. Hydrodesulfurization (HDS) and hydrodenitrogenation (HDN) activity of nickel phosphide catalysts were shown to be lower in comparison with NiMo/Al2O3. Hydrotreating of S-containing model compounds (DBT, 4-MDBT, 4,6-DMDBT) was carried out over TPR_I catalyst, and a negative effect of dimethyl disulfide (DMDS) and acridin additions on the HDS activity was observed.

Development of Highly Active Silica-Supported Nickel Phosphide Catalysts for Direct Dehydrogenative Conversion of Methane to Higher Hydrocarbons

The direct dehydrogenative conversion of methane (DCM) to higher hydrocarbons was investigated over silica-supported nickel phosphide catalysts (NixPy/SiO2) over 1023 K. NixPy/SiO2 catalysts were prepared by precipitation method to promote formation of nickel phosphide (Ni2P) as an active phase for the DCM reaction. Characterization studies of the NixPy/SiO2 catalysts with different P/Ni molar ratios were conducted by a X-ray diffraction analysis, a H2-temperature-programmed reduction spectrum, a scanning electron microscopy image, a X-ray absorption spectroscopy and a N2-adsorption measurement. Catalytic activity tests for the DCM reaction were conducted using a conventional fixed-bed reactor. Products of C2H4 (ethylene), C2H6 (ethane), C2H2 (acetylene), C3H6 (propylene), C6H6 (benzene), C7H8 (toluene), C10H8 (naphthalene) and H2 were analyzed by GC-TCD and GC-FID instruments. Different degrees of the Ni2P phase and character were observed for the NixPy/SiO2 catalysts from characterization studies. Data from characterization studies indicated that smaller and dispersed Ni2P particles were obtained by precipitation method as compared to that of impregnation method. NixPy/SiO2 with a molar ratio of P/Ni = 3.0 showed optimum catalytic performance with 3.28% of methane conversion, 1.93% of total product yield, and 60% of selectivity to hydrocarbons. The experimental results of the effects of reaction temperatures on the product distributions and activation energies indicated that the Ni2P phase successfully activated the C–H bond of methane and selectively converted to ethane. Ethane thermally converted to other higher hydrocarbons in the gas phase without the participation of the catalyst.

Highly active non-noble electrocatalyst from Co2P/Ni2P nanohybrids for pH-universal hydrogen evolution reaction

Many water sources including seawater, industrial wastewater and residential water are naturally promising ingredients for hydrogen production from water electrolysis, in which an efficient hydrogen-evolving electrocatalyst is required to work energetically under different pH environments. However, very few of non-noble electrocatalysts exhibit promising hydrogen-evolving activities in both neutral and alkaline solutions at present. Here we demonstrate that a highly porous hydrogen-evolving electrocatalyst, which is established by in-situ formation of Co2P/Ni2P nanohybrids with a nanometer size on a conductive CoNi foam, presents very outstanding pH-universal catalytic activities for hydrogen evolution in a wide pH range demanding extremely low overpotentials of 65.7 and 51 mV to yield 10 mA/cm2 with exceptionally operational durability in 1 M phosphate buffer solution (PBS, pH ≈ 6.5) and 1 M KOH (pH = 14), respectively, and 46 mV to deliver 20 mA/cm2 stably in 0.5 M H2SO4 (pH ≈ 0.3). More interestingly, it is worth mentioning that this catalyst can bear huge current densities up to 177, 1700 and 1000 mA/cm2 once the overpotential is increased to 0.2 V in neutral, alkaline and acidic solutions, respectively. These catalytic activities outperform most of the documented non-noble electrocatalysts composed of transition metal phosphides, selenides, sulfides, etc., and match or even surpass noble Pt catalysts. It probably represents the best hydrogen-evolving activity among the ever-reported Earth-abundant catalysts for HER hitherto, which is probably arisen from the large surface area, the exposure of numerous active sites and strong interfacial interactions between Co2P and Ni2P particles. This discovery may pave a new avenue toward the development of robust inexpensive electrocatalysts for hydrogen production in unfavorable neutral or alkaline media.

Organodiphosphonate Metal‐Organic Frameworks Derived Ni‐P@C Catalyst for Hydrogenation of Furfural

Tetraethyl p-xylenediphosphate is used as the organic ligand to prepare the Ni−P-MOFs material belonging to the category of organic phosphoric acids, through pyrolysis and in-situ reduction reaction of Ni−P-MOFs material during the high-temperature carbonization process, Ni−P@C catalyst with graphitized carbon-covering Ni2P particles is prepared. Compared with Ni−P catalyst prepared through coprecipitation method, Ni−P@C catalyst prepared with Ni−P-MOFs material can obviously decrease the formation temperature of Ni2P active phase and retain the schistose morphology of the Ni−P-MOFs material, which is of high specific area, and meanwhile effectively suppresses the agglomeration of Ni2P particles. It is indicated by research on furfural hydrogenation performance that, Ni−P@C catalyst presents a high activity and stability in furfural hydrogenation. Products of furfural hydrogenation catalyzed by Ni−P@C catalyst mainly contain furfuryl alcohol, 2-methylfuran and 2-methyltetra hydrofuran, and the reaction temperature and reaction time have great influence on the distribution of products. The carbon-covering structure of Ni−P@C catalyst can effectively protect the active components of Ni2P, thus presenting a high stability and good reusability.

Photocatalytic Dinitrogen Reduction with Water on Boron-Doped Carbon Nitride Loaded with Nickel Phosphide Particles.

Photocatalytic N2 reduction with water by sunlight irradiation is a challenging issue toward sustainable energy society, but previously reported photocatalysts had suffered from low stability and low activity. We prepared a boron-doped carbon nitride (BCN) semiconductor powder loaded with nickel phosphide particles (Ni2P) as cocatalysts. The Ni2P/BCN catalyst, when photoirradiated in pure water by simulated sunlight under N2 flow, successfully produces NH3 at room temperature. The B doping leads to a positive shift of the valence band level and enhances water oxidation by the photoformed holes. The Ni2P particles efficiently receive the conduction band electrons of BCN, leading to enhanced charge separation of the photoformed hole and electron pairs, and behave as N2 reduction sites. Simulated sunlight irradiation of the catalyst in water stably generates NH3 with 0.010% solar-to-chemical conversion efficiency. This noble-metal-free system therefore shows a significant potential for N2 photofixation.

Comparison of activity and stability of supported Ni2P and Pt catalysts in the hydroprocessing of palm oil into normal paraffins

The hydroprocessing of vegetable oils into normal paraffins is a very promising method for producing green diesel and bio-jet fuels. However, detailed variations in the product distribution and catalyst deactivation have been rarely reported. In this study, the conversion of commercial palm oil over supported Pt and Ni2P catalysts is investigated. Activity tests conducted at 380°C and 400°C indicate that 10 wt.% Ni2P/SiO2 and 1 wt.% Pt/Al2O3 are more active and stable among the tested catalysts. An additional test at 360°C revealed the superior hydroprocessing activity of the former catalyst. The major contributors to the activity variation of 1 wt.% Pt/Al2O3 are Pt sintering and a carbon deposit, resulting in a decrease in the Pt sites favoring decarbonylation and decarboxylation pathways. In contrast, the catalytic performance of 10 wt.% Ni2P/SiO2 is associated with an extremely low formation of carbon deposits and the Brønsted acidity responsible for the hydrodeoxygenation pathway, despite the transformation of Ni2P particles. Consequently, Ni2P/SiO2 turns out to be the most excellent among the tested catalysts for the hydroprocessing of palm oil.