Catalytic activity of NiPS3 in the reaction of thiophene hydrodesulfurization

Andreev, A.; Vladov, Ch.; Prahov, L.; Atanasova, P.

doi:10.1016/0926-860x(94)85063-1

Cited by 16 publications

(8 citation statements)

References 27 publications

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“…The small influence of P-loading in the degree of Ni sulfidation of the catalysts (at atmospheric pressure) as determined by XPS also suggests the absence of Ni phosphate, since in the case of sulfide ColC and FelC catalysts the sulfidation decreased in the presence of phosphate and it was explained as due to the formation of metal phosphates (38). As the BE of the P 2p peak did not change significantly upon sulfidation, the formation of a mixed Ni-P-S phase as recently reported (26,27) is unlikely in the present catalysts.…”

Section: Gas Oil Hds and Pyrldine Hdnsupporting

confidence: 67%

“…However, the idea moreextended in recent literature is that in addition to their dispersion and structural effects, phosphorous has also a direct influence on the active sites, and particularly in HDN reactions; for example, through sitesassociated with phosphates (15,25) or by direct replacement of some sulfide species by phosphldes like species (17). Relevant to this are the results recently reported on thiophene HDS over NiPSdA1203 catalysts (26) and on different supported NIPS3 and Ni2P catalysts (27) which exhibited thiophene HDS and especially quindine HDN activities comparable to those of commercial NiMoP/A1203 catalysts. Despite the significant progress in understanding the role of P, there are still different views on the direct participation of P in the supported active site structure.…”

Section: Introductionsupporting

confidence: 62%

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THE ROLE OF PHOSPHORUS ON THE STRUCTURE AND PERFORMANCE FOR HYDRODESULFURIZATION AND HYDROGENITROGENATION REACTIONS OF P‐CONTAINING Ni/AL₂o₃ CATALYSTS

Agudo

López-Cordero

Palacios

et al. 1995

Bulletin des Soc Chimique

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Section: Gas Oil Hds and Pyrldine Hdnsupporting

confidence: 67%

Section: Introductionsupporting

confidence: 62%

THE ROLE OF PHOSPHORUS ON THE STRUCTURE AND PERFORMANCE FOR HYDRODESULFURIZATION AND HYDROGENITROGENATION REACTIONS OF P‐CONTAINING Ni/AL₂o₃ CATALYSTS

Agudo

López-Cordero

Palacios

et al. 1995

Bulletin des Soc Chimique

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“…Specifically, given that S 2− is a pollutant commonly found in industrial waste and sewage water, the oxidation of this anionic species to elemental S which can be removed by simple biological treatments or filtration is of utmost importance to mitigating the human footprint on the environment. To this end, Ni 2 P 2 S 6 has been shown to be an effective catalyst in the oxidation of S 2− in compounds like Na 2 S to elemental S . Under normal circumstances, S 2− is oxidized from air as represented by the following reaction scheme:

{normalS}^{2 -} + \frac{1}{2} {normalO}_{2} + {normalH}_{2} O \to S + 2 {OH}^{-}

…”

Section: Functionality and Applications Of Mtp Compoundsmentioning

confidence: 99%

“…In effect, the Ni 2 P 2 S 6 host lattice captures the two electrons from the S 2− anion as it is oxidized to elemental sulfur. The reduced host lattice is in turn stabilized by the presence of Na + cations and H 2 O, which serve to form an intercalate by migrating into the host van der Waals gap according to the reaction proposed by Andreev:

\begin{matrix} left \\ x {normalNa}^{normal+} + \frac{x}{2} {normalS}^{2 -} + y {normalH}_{2} O + ([], {normalNi}_{2} P_{2} S_{6}) \\ \to {(N a^{+})}_{x} {({normalH}_{2} O)}_{y} {[{Ni}_{2} {normalP}_{2} {normalS}_{6}]}^{x -} + \frac{x}{2} {normalS}^{0} \end{matrix}

…”

Section: Functionality and Applications Of Mtp Compoundsmentioning

confidence: 99%

Metal Thio‐ and Selenophosphates as Multifunctional van der Waals Layered Materials

et al. 2017

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Since the discovery of Dirac physics in graphene, research in 2D materials has exploded with the aim of finding new materials and harnessing their unique and tunable electronic and optical properties. The follow-on work on 2D dielectrics and semiconductors has led to the emergence and development of hexagonal boron nitride, black phosphorus, and transition metal disulfides. However, the spectrum of good insulating materials is still very narrow. Likewise, 2D materials exhibiting correlated phenomena such as superconductivity, magnetism, and ferroelectricity have yet to be developed or discovered. These properties will significantly enrich the spectrum of functional 2D materials, particularly in the case of high phase-transition temperatures. They will also advance a fascinating fundamental frontier of size and proximity effects on correlated ground states. Here, a broad family of layered metal thio(seleno)phosphate materials that are moderate- to wide-bandgap semiconductors with incipient ionic conductivity and a host of ferroic properties are reviewed. It is argued that this material class has the potential to merge the sought-after properties of complex oxides with electronic functions of 2D and quasi-2D electronic materials, as well as to create new avenues for both applied and fundamental materials research in structural and magnetic correlations.

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“…In particular, they have potential applications in both hydrodenitrogenation (HDN) and hydrodesulfurization (HDS) processes. [1][2][3][4][5][6] Recently, transition-metal phosphides have also been found to possess excellent catalytic properties for HDS 7 and HDN reactions. [8][9][10] It was found that molybdenum phosphides were intrinsically the most active catalysts in hydroprocessing reactions among a series of catalysts.…”

Section: Introductionmentioning

confidence: 99%

Carbon Monoxide Adsorption on Molybdenum Phosphides: Fourier Transform Infrared Spectroscopic and Density Functional Theory Studies

Feng

Liang

et al. 2003

J. Phys. Chem. B

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Molybdenum phosphide (MoP) and supported molybdenum phosphide (MoP/γ-Al 2 O 3 ) have been prepared by the temperature-programmed reduction method. The surface sites of the MoP/γ-Al 2 O 3 catalyst were characterized by carbon monoxide (CO) adsorption with in situ Fourier transform infrared (FT-IR) spectroscopy. A characteristic IR band at 2037 cm -1 was observed on the MoP/γ-Al 2 O 3 that was reduced at 973 K. This band is attributed to linearly adsorbed CO on Mo atoms of the MoP surface and is similar to IR bands at 2040-2060 cm -1 , which correspond to CO that has been adsorbed on some noble metals, such as platinum, palladium, and rhodium. Density functional calculations of the structure of molybdenum phosphides, as well as CO chemisorption on the MoP(001) surface, have also been studied on periodic surface models, using the generalized gradient approximation (GGA) for the exchange-correlation functional. The results show that the chemisorption of CO on MoP occurred mainly on top of molybdenum, because the bonding of CO requires a localized mininum potential energy. The adsorption energy obtained is ∆H ads ≈ -2.18 eV, and the vibrational frequency of CO is 2047 cm -1 , which is in good agreement with the IR result of CO chemisorption on MoP/γ-Al 2 O 3 .

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Catalytic activity of NiPS3 in the reaction of thiophene hydrodesulfurization

Cited by 16 publications

References 27 publications

THE ROLE OF PHOSPHORUS ON THE STRUCTURE AND PERFORMANCE FOR HYDRODESULFURIZATION AND HYDROGENITROGENATION REACTIONS OF P‐CONTAINING Ni/AL₂o₃ CATALYSTS

THE ROLE OF PHOSPHORUS ON THE STRUCTURE AND PERFORMANCE FOR HYDRODESULFURIZATION AND HYDROGENITROGENATION REACTIONS OF P‐CONTAINING Ni/AL₂o₃ CATALYSTS

Metal Thio‐ and Selenophosphates as Multifunctional van der Waals Layered Materials

Carbon Monoxide Adsorption on Molybdenum Phosphides: Fourier Transform Infrared Spectroscopic and Density Functional Theory Studies

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Catalytic activity of NiPS3 in the reaction of thiophene hydrodesulfurization

Cited by 16 publications

References 27 publications

THE ROLE OF PHOSPHORUS ON THE STRUCTURE AND PERFORMANCE FOR HYDRODESULFURIZATION AND HYDROGENITROGENATION REACTIONS OF P‐CONTAINING Ni/AL2o3 CATALYSTS

THE ROLE OF PHOSPHORUS ON THE STRUCTURE AND PERFORMANCE FOR HYDRODESULFURIZATION AND HYDROGENITROGENATION REACTIONS OF P‐CONTAINING Ni/AL2o3 CATALYSTS

Metal Thio‐ and Selenophosphates as Multifunctional van der Waals Layered Materials

Carbon Monoxide Adsorption on Molybdenum Phosphides: Fourier Transform Infrared Spectroscopic and Density Functional Theory Studies

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THE ROLE OF PHOSPHORUS ON THE STRUCTURE AND PERFORMANCE FOR HYDRODESULFURIZATION AND HYDROGENITROGENATION REACTIONS OF P‐CONTAINING Ni/AL₂o₃ CATALYSTS

THE ROLE OF PHOSPHORUS ON THE STRUCTURE AND PERFORMANCE FOR HYDRODESULFURIZATION AND HYDROGENITROGENATION REACTIONS OF P‐CONTAINING Ni/AL₂o₃ CATALYSTS