Ultradeep hydrodesulfurization of fuel over superior NiMoS phases constructed by a novel Ni(MoS₄)₂(C₁₃H₃₀N)₂ precursor

Abstract

Ni(MoS4)2(C13H30N)2 was synthesized and adopted for preparing a NiMoS/γ-Al2O3 hydrodesulfurization catalyst, and the as-prepared catalyst exhibits superior 4,6-dimethyldibenzothiophene hydrodesulfurization activity.

Review on Hydrodesulfurization over Zeolite-Based Catalysts

“…The metal precursors possessing both Mo and Ni in their chemical structures are also highly desirable because the higher promoting effect (formation of more Ni­(Co)­MoS phases) is experienced due to the presence of Mo and Ni in the same precursor at the closer proximity. Polyoxometalates are the special metal precursors that can generally have both Mo and Ni in their chemical structures. ,− Besides polyoxometalates, the other bimetallic clusters are also utilized, , and very recently, such a bimetallic cluster (Ni­(MoS 4 ) 2 (C 13 H 30 N) 2 ) is proposed by Xu et al for the preparation of sulfided NiMo/γ-Al 2 O 3 . We suggest that these precursors can be utilized for further improving the efficiency of zeolite-based HDS catalysts.…”

“…158,166−175 Besides polyoxometalates, the other bimetallic clusters are also utilized, 176,177 and very recently, such a bimetallic cluster (Ni(MoS 4 ) 2 (C 13 H 30 N) 2 ) is proposed by Xu et al for the preparation of sulfided NiMo/γ-Al 2 O 3 . 178 We suggest that these precursors can be utilized for further improving the efficiency of zeolite-based HDS catalysts. While choosing these precursors, especially the polyoxometalates, one needs to consider the ratio between Mo and Ni (or Co) in the precursors and the ease of sulfidation.…”

Constructing a superior Co–Mo HDS catalyst from a crystalline precursor separated from the impregnating solution

“…As one of the cornerstones of the chemical industry, hydrodesulfurization (HDS) is the most promising way of producing ultralow sulfur fuels to meet these challenges. [1][2][3][4][5][6] Among the various HDS procedures, HDS catalysts are receiving increasing attention. [7][8][9] At present, the most widely used HDS catalysts are MoS 2 catalysts promoted by Co atoms, which are prepared by the sulfidation of oxidic Mo-Co precursors.…”

“…For Mo-Co POMs used as HDS catalyst active phase precursors, there are three positives. (1) The simultaneous incorporation of Mo and Co atoms at the molecular level, which is positive for the fabrication of the CoMoS active phase precursor in one impregnation step during the catalyst preparation. (2) The ideal uniformly spatial distribution and proximity of Mo and Co atoms at the atomic scale, providing a better synergism of Mo and the promoting atoms in the HDS evaluation.…”

“…As one of the cornerstones of the chemical industry, hydrodesulfurization (HDS) is the most promising way of producing ultralow sulfur fuels to meet these challenges. 1–6 Among the various HDS procedures, HDS catalysts are receiving increasing attention. 7–9…”