Catalytic Activities of Noble Metal Phosphides for Hydrogenation and Hydrodesulfurization Reactions

Kanda, Yasuharu; Kawanishi, Kota; Tsujino, Taiki; Al-Otaibi, Ahmad; Uemichi, Yoshio

doi:10.3390/catal8040160

Cited by 26 publications

(12 citation statements)

References 27 publications

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“…Transition metal phosphides (TMPs, TM = Fe, Co, Ni, Mo, W, and Cu), which were widely applied in various hydrotreating processes, such as hydrodesulfurization, hydrodeoxygenation, and hydrodenitrogenation, − have recently gained considerable interest as potential catalysts for HER. − The pioneering research by Paseka , and Burchardt demonstrated that amorphous transition metal (e.g., Ni, Co, and Fe) phosphorus “alloys” are electrocatalytically active in promoting the HER at relatively high overpotentials in alkaline media. In 2005, inspired by the HER catalytic activity of [NiFe] hydrogenase, Liu and Rodriguez predicted that Ni 2 P(001) could be an excellent catalytic surface toward HER, even better than the benchmarking Pt-group catalyst.…”

Section: Non-noble-metal-compound-based Her Electrocatalystsmentioning

confidence: 99%

Recent Advances in Electrocatalytic Hydrogen Evolution Using Nanoparticles

et al. 2019

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Hydrogen fuel is considered as the cleanest renewable resource and the primary alternative to fossil fuels for future energy supply. Sustainable hydrogen generation is the major prerequisite to realize future hydrogen economy. The electrocatalytic hydrogen evolution reaction (HER), as the vital step of water electrolysis to H 2 production, has been the subject of extensive study over the past decades. In this comprehensive review, we first summarize the fundamentals of HER and review the recent state-of-the-art advances in the low-cost and high-performance catalysts based on noble and non-noble metals, as well as metal-free HER electrocatalysts. We systemically discuss the insights into the relationship among the catalytic activity, morphology, structure, composition, and synthetic method. Strategies for developing an effective catalyst, including increasing the intrinsic activity of active sites and/or increasing the number of active sites, are summarized and highlighted. Finally, the challenges, perspectives, and research directions of HER electrocatalysis are featured.

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Section: Non-noble-metal-compound-based Her Electrocatalystsmentioning

confidence: 99%

Recent Advances in Electrocatalytic Hydrogen Evolution Using Nanoparticles

et al. 2019

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“…As an important class of catalytic materials, metal phosphides hold great potential in many thermal catalytic (e.g., hydrogenation, hydrodesulfurization, and hydrodenitrogenation reactions) and electrocatalytic (e.g., hydrogen evolution reaction (HER), oxygen reduction reaction (ORR) and oxygen evolution reaction (OER)) reactions. ,− Many previous studies point out that bimetallic materials exhibit more excellent catalytic activities than the monometallic ones, especially for the OER. ,, However, an accurate search for optimal bimetallic or multimetallic phosphide candidates for a specific catalytic reaction has been obstructed by the lack of synthetic strategy that can isolate the composition effect from others variables (size, shape, crystal phase, etc.). Using the OER as a model reaction, we demonstrate that the programmable synthesis of CoMP x NRs with highly consistent 1-D morphology and structure can provide an unprecedented opportunity to rapidly screen the multicomponent composition effect.…”

Section: Resultsmentioning

confidence: 99%

Programmable Synthesis of Multimetallic Phosphide Nanorods Mediated by Core/Shell Structure Formation and Conversion

Zhang

et al. 2020

J. Am. Chem. Soc.

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Generalized synthetic strategies for nanostructures with well-defined physical dimensions and broad-range chemical compositions are at the frontier of advanced nanomaterials design, functionalization, and application. Here, we report a composition-programmable synthesis of multimetallic phosphide CoMP x nanorods (NRs) wherein M can be controlled to be Fe, Ni, Mn, Cu, and their binary combinations. Forming Co2P/MP x core/shell NRs and subsequently converting them into CoMP x solid-solution NRs through thermal post-treatment are essential to overcome the obstacle of morphology/structure inconsistency faced in conventional synthesis of CoMP x with the different M compositions. The resultant CoMP x with uniform one-dimensional (1-D) structure provides us a platform to unambiguously screen the M synergistic effects in improving the electrocatalytic activity, as exemplified by the oxygen evolution reaction. This new approach mediated by core/shell nanostructure formation and conversion can be extended to other multicomponent nanocrystal systems (metal alloy, mixed oxide, and chalcogenide, etc.) for diverse applications.

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“…Metal phosphides are a recent development in highly active HDS catalysts 9) -22) . We reported that rhodium phosphide (Rh2P) supported on silica (SiO2) showed higher activities for hydrogenation of biphenyl and HDS of 4,6-dimethyldibenzothiophene than sulfided NiMo/Al2O3 and other noble metal phosphide catalysts 22) . High HDS activity of the Rh2P catalyst will depend on the high hydrogenation activity for aromatic compounds 22) and sulfur tolerance 18),22) .…”

Section: Introductionmentioning

confidence: 99%

Sulfur Tolerance Properties of Rhodium Phosphide Evaluated by a New Temperature-programmed Sulfidation Technique

Ueno

Uemichi

Kanda

2020

J. Jpn. Petrol. Inst.

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Sulfur tolerance properties of rhodium phosphide (Rh2P) were qualitatively and quantitatively evaluated by the temperature-programmed sulfidation (TPS) technique. The TPS profile of the Rh/SiO2 catalyst demonstrated a peak attributed to Rh2S3 formation around 400 °C. The TPS profiles of P-added Rh (Rh _ P) catalysts showed this peak shifted to higher temperatures and lower intensity with higher P/Rh ratio or reduction temperature. Quantitative analysis of TPS profiles revealed that the amount of reacted H2S was remarkably lower (about 80 %) with P/ Rh ratio more than 1.5, compared with Rh catalyst. The amount of reacted H2S decreased with greater intensity of the Rh2P peak in the XRD pattern, indicating that Rh2P has high sulfur tolerance. Furthermore, the relationship between P/Rh ratio and S/Rh ratio (calculated from TPS profile) of Rh _ P catalysts agreed with the reported S/Rh value, showing the TPS method has high validity for qualitative analysis. We conclude that the TPS technique is a superior method for evaluation of sulfur tolerance for phosphide catalysts, and Rh2P has remarkably high sulfur tolerance compared with Rh catalyst.

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Catalytic Activities of Noble Metal Phosphides for Hydrogenation and Hydrodesulfurization Reactions

Cited by 26 publications

References 27 publications

Recent Advances in Electrocatalytic Hydrogen Evolution Using Nanoparticles

Recent Advances in Electrocatalytic Hydrogen Evolution Using Nanoparticles

Programmable Synthesis of Multimetallic Phosphide Nanorods Mediated by Core/Shell Structure Formation and Conversion

Sulfur Tolerance Properties of Rhodium Phosphide Evaluated by a New Temperature-programmed Sulfidation Technique

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