New hydrotreating NiMo catalysts supported on MCM-41 modified with phosphorus

Herrera, José Manuel Ortega; Reyes, Javier; Roquero, Pedro; Klimova, Tatiana

doi:10.1016/j.micromeso.2005.05.010

Cited by 58 publications

(24 citation statements)

References 27 publications

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“…Unfortunately, no HRTEM images were published so that a comparison with the morphology of the MoS 2 phase in the present work is not possible. HRTEM characterization was performed by Klimova et al [50] for NiMo sulfide catalysts supported on MCM-41 and on P modified MCM-41. On the pure silica MCM-41 MoS 2 crystallites exhibit lengths between 30 and 60 Å and two to four stacked layers.…”

Section: Catalytic Activity and Selectivitymentioning

confidence: 99%

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SBA-15 as Support for Ni–MoS2 HDS Catalysts Derived from Sulfur-containing Molybdenum and Nickel Complexes in the Reaction of HDS of DBT: An All Sulfide Route

et al. 2008

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MoS 2 HDS catalysts promoted with Ni supported on SBA-15 were synthesized from sulfur containing Mo (ammonium thiomolybdate, ATM, and tetramethylammonium thiomolybdate, TMATM) and a Ni complex (Nickel diethylthiocarbamate, NiDETC). The catalysts have been characterized by X-ray diffraction (XRD), N 2 -physisorption and High-resolution transmission electron microscopy (HRTEM). The catalytic performance in the hydrodesulfurization (HDS) reaction of dibenzothiophene (DBT) was examined at T = 623 K and P H2 = 3.4 Mpa. In comparison with the impregnation mode, the nature of the employed thiomolybdate complex shows a stronger influence on the MoS 2 morphology and consequently on the HDS activity of DBT. A similar high HDS activity to a commercial NiMo/c-Al 2 O 3 catalyst despite the pronounced stacking number is shown for a NiMoS 2 /SBA-15 catalyst derived from ATM. The catalysts derived from TMATM showed lower HDS activities compared to the catalysts obtained from ATM precursors due to probably the presence of closed shell structures (nano-onions) of MoS 2 which offer significantly smaller amount of HDS active sites (edge sites). Moreover, the HYD/DDS ratios are interestingly higher with respect to the HYD/DDS ratio of the commercial NiMo/c-Al 2 O 3 catalyst which could be ascribed to the generation of multilayered MoS 2 active phase.

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Section: Catalytic Activity and Selectivitymentioning

confidence: 99%

“…Thicker MoS 2 slabs provide a larger number of vacancies or CUS compared with single-layered or thin slabs. The p-complexation of the aromatic ring on such thick MoS 2 slabs is then easier compared to single-layered or thin slabs [50] and consequently results in higher HYD activity.…”

Section: Catalytic Activity and Selectivitymentioning

confidence: 99%

SBA-15 as Support for Ni–MoS2 HDS Catalysts Derived from Sulfur-containing Molybdenum and Nickel Complexes in the Reaction of HDS of DBT: An All Sulfide Route

et al. 2008

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“…Some applications of these materials in catalysis have already been published [11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Hydrotreatment of heavy oil from a direct coal liquefaction process on sulfided Ni–W/SBA-15 catalysts

Lei

Gao

Shui

et al. 2011

Fuel Processing Technology

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“…More recently, ValletRegi and co-workers [13] synthesized the hexagonally ordered SBA-15 materials with increased surface area and mesoporous volume by adopting HCl and H 3 PO 4 mixture solution for the template formation during the synthesis procedures. In addition, the phosphorus species in mesoporous frameworks can act as acid centers in catalysis and biomaterial science [14,15]. However, no change can be observed for the micropore volume.…”

Section: Introductionmentioning

confidence: 99%

Templated Silica with Increased Surface Area and Expanded Microporosity: Synthesis, Characterization, and Catalytic Application

Peng

et al. 2010

Chemical Engineering Journal

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a b s t r a c tIn this paper, we report a convenient and effective approach to synthesizing mesoporous SBA-15 materials with increased surface area (up to 836.7 cm 3 /g) and expanded microporosity (up to 0.22 cm 3 /g), where the textural properties of the synthesized materials can be systematically controlled. These micro/mesoporous composite materials exhibit excellent performance in catalysis, adsorption and separation. Moreover, the synthesized materials that supported Pd catalysts obtained through impregnation and grafting approaches were tested to explore their flexibility in toluene elimination. Grafting is an effective method to obtain highly dispersed Pd nanoparticles compared with traditional impregnation approach. The catalyst prepared via the grafting procedure possesses higher activity and CO 2 selectivity than that was prepared by impregnation method. Moreover, the catalytic performance of synthesized catalysts can be well sustained during the stability tests. Therefore, these novel Pd-supported catalysts are promising materials for effective removal of some types of volatile organic compounds (VOCs) such as toluene.

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New hydrotreating NiMo catalysts supported on MCM-41 modified with phosphorus

Cited by 58 publications

References 27 publications

SBA-15 as Support for Ni–MoS2 HDS Catalysts Derived from Sulfur-containing Molybdenum and Nickel Complexes in the Reaction of HDS of DBT: An All Sulfide Route

SBA-15 as Support for Ni–MoS2 HDS Catalysts Derived from Sulfur-containing Molybdenum and Nickel Complexes in the Reaction of HDS of DBT: An All Sulfide Route

Hydrotreatment of heavy oil from a direct coal liquefaction process on sulfided Ni–W/SBA-15 catalysts

Templated Silica with Increased Surface Area and Expanded Microporosity: Synthesis, Characterization, and Catalytic Application

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