Thiophene hydrodesulfurization over nickel phosphide catalysts: effect of the precursor composition and support

Sawhill, Stephanie J.; Layman, Kathryn A.; Wyk, Daniel R. Van; Engelhard, Mark H.; Wang, Chongmin; Bussell, Mark E.

doi:10.1016/j.jcat.2005.01.020

Cited by 325 publications

(266 citation statements)

References 34 publications

Supporting

Mentioning

221

Contrasting

Unclassified

Order By: Relevance

“…The selectivity to 1,2-PDO remained around 85%, and changed very slightly with conversion of glycerol up to 95.7%. It was reported that transition-metal phosphides such as Ni12P5 and Ni2P can be formed on high temperature treatment under the reducing atmosphere of hydrogen [18,19]. In addition, Huang et al, reported that the formation of the Ni2P alloy phase could improve the selectivity to 1,2-PDO in the glycerol hydrogenolysis over P-doped Ni/SiO2 catalyst [15].…”

Section: Influence Of P Doping On the Catalytic Performancementioning

confidence: 99%

Effect of Phosphine Doping and the Surface Metal State of Ni on the Catalytic Performance of Ni/Al2O3 Catalyst

Cheng

Liang

et al. 2015

Catalysts

View full text Add to dashboard Cite

Ni-based catalysts as replacement for noble metal catalysts are of particular interest in the catalytic conversion of biomass due to their cheap and satisfactory catalytic activity. The Ni/SiO2 catalyst has been studied for the hydrogenolysis of glycerol, and doping with phosphorus (P) found to improve the catalytic performance significantly because of the formation of Ni2P alloys. However, in the present work we disclose a different catalytic phenomenon for the P-doped Ni/Al2O3 catalyst. We found that doping with P has a significant effect on the state of the active Ni species, and thus improves the selectivity to 1,2-propanediol (1,2-PDO) significantly in the hydrogenolysis of glycerol, although Ni-P alloys were not observed in our catalytic system. The structure and selectivity correlations were determined from the experimental data, combining the results of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), hydrogen temperature-programmed reduction (H2-TPR) and ammonia temperature-programmed desorption (NH3-TPD). The presence of NiO species, formed from P-doped Ni/Al2O3 catalyst, was shown to benefit the formation of 1,2-PDO. This was supported by the results of the Ni/Al2O3 catalyst containing NiO species with incomplete reduction. Furthermore, the OPEN ACCESSCatalysts 2015, 5 760 role the NiO species played in the reaction and the potential reaction mechanism over the P-doped Ni/Al2O3 catalyst is discussed. The new findings in the present work open a new vision for Ni catalysis and will benefit researchers in designing Ni-based catalysts.

show abstract

Section: Influence Of P Doping On the Catalytic Performancementioning

confidence: 99%

Effect of Phosphine Doping and the Surface Metal State of Ni on the Catalytic Performance of Ni/Al2O3 Catalyst

Cheng

Liang

et al. 2015

Catalysts

View full text Add to dashboard Cite

show abstract

“…[10,21]. As reported, the hydrogenation ability of the Ni site reduces with the decrease of electron density [22,23] [15] also reported that the Ni in Ni 12 P 5 has a higher electronic density than Ni 2 P.…”

Section: Catalystmentioning

confidence: 67%

“…In Catalysts 2017, 7, x FOR PEER REVIEW 4 of 9 nickel phosphides, because of a covalent bond between the Ni and P atoms and a charge transfer from Ni to P, the electron-deficient Ni formed. Moreover, the peaks at 856.1-857.2 and 134.0-134.5 eV are assigned to Ni 2+ and P 5+ [7,15], respectively. 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].…”

Section: Catalystmentioning

confidence: 98%

See 1 more Smart Citation

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

et al. 2017

View full text Add to dashboard Cite

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.

show abstract

“…Consequently, the escape of volatile P species is inevitable in a H2 flow at high temperature. Therefore, excess P in the precursors is generally required 9), 10) . Like metal catalysts, freshly prepared metal phos- phides react vigorously with O2 in air.…”

Section: Preparation and Catalytic Performance Of Metal Phosphidesmentioning

confidence: 99%

Metal Phosphides as High-performance Hydrotreating Catalysts

Wang

Sun

et al. 2015

J. Jpn. Petrol. Inst.

View full text Add to dashboard Cite

Thiophene hydrodesulfurization over nickel phosphide catalysts: effect of the precursor composition and support

Cited by 325 publications

References 34 publications

Effect of Phosphine Doping and the Surface Metal State of Ni on the Catalytic Performance of Ni/Al2O3 Catalyst

Effect of Phosphine Doping and the Surface Metal State of Ni on the Catalytic Performance of Ni/Al2O3 Catalyst

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

Metal Phosphides as High-performance Hydrotreating Catalysts

Contact Info

Product

Resources

About