Effect of citric acid addition on the morphology and activity of Ni2P supported on mesoporous zeolite ZSM-5 for the hydrogenation of 4,6-DMDBT and phenanthrene

Zhang, Lei; Fu, Wenqian; Yu, Qiaoyan; Tang, Tiandi; Zhao, Yicheng; Li, Yongdan

doi:10.1016/j.jcat.2016.11.019

Cited by 65 publications

(30 citation statements)

References 54 publications

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“…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: 99%

“…The lattice parameters a and c are both almost the same among different Zn x Mg 1−x NiAl LDHs, despite the different Zn/Mg molar ratios. Then, the crystallite sizes at the a-and c-directions were calculated by the Scherrer formula based on the (110) and (003) s 2017, 7,202 g0.5Ni-P/Al2O3). At x = 0.25 (Zn0.25Mg0.75Ni-P/Al2O3), the diffraction peaks of Ni2P ned until nearly invisible.…”

Section: Characterization Of Catalystsmentioning

confidence: 99%

“…However, the existing commercial HDS catalysts fail to meet the regulated levels [5]. Studies on the hydrotreation properties of metal phosphides show that nickel phosphide is the most promising candidate for the preparation of next-generation HDS catalysts [6][7][8]. x/n ) · mH 2 O) are lamellarly-mixed hydroxides and a class of anionic clays having a hydrocalcite-like structure, which consist of positively charged mixed metal hydroxide layers and negatively charged interlayer anions [9].…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Catalystmentioning

confidence: 99%

Section: Characterization Of Catalystsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…However, the hydrogenation of the phenyl ring could alleviate the steric hindrance of methyl substitutes at the 4 and 6 positions near to sulfur atom through the conformational change of the planar phenyl ring [15][16][17]. While the most commonly used catalysts for HDS at present in industry are based on alumina supported NiMo or CoMo materials [18][19][20], they fail to meet the latest fuel standards because of their low hydrogenation performance and high metal-support interaction (MSI) [21,22].…”

Section: Introductionmentioning

confidence: 99%

Dendritic micro–mesoporous composites with center-radial pores assembled by TS-1 nanocrystals to enhance hydrodesulfurization activity of dibenzothiophene and 4,6-dimethyldibenzothiophene

Wang

Xiao

Zheng

et al. 2020

Journal of Catalysis

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A novel dendritic composite (TD) with an open center-radial pore structure using TS-1 nanocrystals as microporous precursors were synthesized successfully by a facile method. TS-1 nanocrystals were embedded into the framework of dendritic mesoporous silica nanospheres (DMSNs) to form Si-O-Ti bonds, which was beneficial to generate more S vacancies of MoS2 active phases. NiMo/TD-2 catalyst had a larger surface area and higher metal-support-interaction (MSI), resulting in a higher sulfidation and dispersion degrees of MoS2 active phases over the sulfided NiMo/TD-2 catalyst, which was consequently favored to improve the HDS activity of dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (4,6-DMDBT). Furthermore, the NiMo/TD-2 catalyst with SiO2/TiO2 molar ratio of 150 exhibited higher hydrodesulfurization (HDS) performances of DBT and 4,6-DMDBT than other NiMo/TD catalysts and the commercial NiMo/Al2O3 catalyst. Moreover, the NiMo/TD-2 catalyst possessed higher Brønsted (B) and lewis (L) acid sites, thus promoted the hydrogenation (HYD) of DBT and the isomerization (ISO) of 4,6-DMDBT.

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“…4 The activity of Ni 2 P catalysts has been found to be influenced by promoters. Aluminium (Al), 5 citric acid (CA), 6 boron (B), 7 titanium (Ti) 8 and platinum (Pt) 9 have been reported as efficient promoters. The rare-earth metals with unfilled 4f electron shells exhibit outstanding optical, chemical, physical and electronic properties.…”

Section: Introductionmentioning

confidence: 99%

The effect of neodymium and yttrium on benzofuran hydrodeoxygenation performance over a bulk Ni₂P catalyst

Song

Dai

Jiang

et al. 2019

Progress in Reaction Kinetics and Mechanism

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Neodymium (Nd)-or yttrium (Y)-modified bulk Ni 2 P catalysts (Nd-Ni 2 P or Y-Ni 2 P) have been successfully prepared and their catalytic performance in benzofuran hydrodeoxygenation have been investigated. The as-prepared catalysts were characterised by X-ray diffraction, N 2 adsorption-desorption, CO uptake and X-ray photoelectron spectroscopy. The addition of Nd or Y, especially Nd, can increase the surface area of the catalysts and promote the formation of smaller and more highly dispersed Ni 2 P particles. The Nd-Ni 2 P catalyst showed the highest benzofuran hydrodeoxygenation activity of 95.3% and the O-free products yield of 74.6%, which gives an increase of 25.3% and 35.4% when compared with that found for Ni 2 P.

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Effect of citric acid addition on the morphology and activity of Ni2P supported on mesoporous zeolite ZSM-5 for the hydrogenation of 4,6-DMDBT and phenanthrene

Cited by 65 publications

References 54 publications

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

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

Dendritic micro–mesoporous composites with center-radial pores assembled by TS-1 nanocrystals to enhance hydrodesulfurization activity of dibenzothiophene and 4,6-dimethyldibenzothiophene

The effect of neodymium and yttrium on benzofuran hydrodeoxygenation performance over a bulk Ni₂P catalyst

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Effect of citric acid addition on the morphology and activity of Ni2P supported on mesoporous zeolite ZSM-5 for the hydrogenation of 4,6-DMDBT and phenanthrene

Cited by 65 publications

References 54 publications

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

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

Dendritic micro–mesoporous composites with center-radial pores assembled by TS-1 nanocrystals to enhance hydrodesulfurization activity of dibenzothiophene and 4,6-dimethyldibenzothiophene

The effect of neodymium and yttrium on benzofuran hydrodeoxygenation performance over a bulk Ni2P catalyst

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The effect of neodymium and yttrium on benzofuran hydrodeoxygenation performance over a bulk Ni₂P catalyst