New generation of titanium dioxide support for hydrodesulfurization

Dźwigaj, Stanisław; Louis, Catherine; Breysse, M.; Cattenot, M.; Belliere, V.; Geantet, Christophe; Vrinat, M.; Blanchard, Pascal; Payen, Edmond; Inoue, Satoshi; Kudo, Hiroshi; Yoshimura, Y.

doi:10.1016/s0926-3373(02)00210-2

Cited by 85 publications

(55 citation statements)

References 18 publications

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“…The main drawback, low surface area, may be overcome by variation of the manufacturing process conditions, resulting in a surface area as high as 120 m 2 /g 34) . The TiO2 support could carry a higher loading of Mo of 19 wt% MoO3 compared to the conventional TiO2 support and Mo species were well dispersed.…”

Section: Progress In Support Materials For More Active Hds Catalystsmentioning

confidence: 99%

An Overview of Hydrodesulfurization and Hydrodenitrogenation

Mochida

Choi

2004

J. Jpn. Petrol. Inst.

142

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Hydrodesulfurization (HDS) and hydrodenitrogenation (HDN) of petroleum products and intermediates are reviewed to provide the basis for developing processes to produce gasoline and diesel oil with very low sulfur content. The reactivity, selectivity and inhibition (susceptibility of substrate molecules to inhibitors) in the catalytic process are very important to develop efficient processes. Recent advances in the understanding of active species, supports and supporting methods are also critically reviewed to suggest the design of catalysts with adequate activity to satisfy future regulations on transportation fuels. Details of the structures of the catalysts are not discussed, but the mechanisms of hydrodesulfurization and inhibition are summarized. Catalyst deactivation and reactor design are also briefly reviewed. New approaches to achieve deep hydrodesulfurization are proposed.

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Section: Progress In Support Materials For More Active Hds Catalystsmentioning

confidence: 99%

An Overview of Hydrodesulfurization and Hydrodenitrogenation

Mochida

Choi

2004

J. Jpn. Petrol. Inst.

142

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“…In addition, Section 4. discusses the relationship between the morphologies of MoS2 crystallites and geometrical structures of the γ-Al2O3 support surface. Section 5. applies the analytical method of the interface between catalysts and supports to TiO2 supported catalysts that have recently shown high performances in industrial hydrotreating reactions 6) . Section 5. also introduces the development of high-performance hydrocracking catalysts with TiO2 doping based on our findings.…”

Section: Introductionmentioning

confidence: 99%

Morphology, Dispersion and Catalytic Functions of Supported Molybdenum Sulfide Catalysts for Hydrotreating Petroleum Fractions

Shimada

2016

J. Jpn. Petrol. Inst.

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The relationships between the morphologies and dispersion of supported Mo sulfide catalysts and their catalytic functions evaluated by model test reactions are reviewed. The catalyst support had large effects on the morphologies through the electronic interaction and geometrical relationship between the catalyst and the support surface. High hydrogenation activities were obtained for Al2O3 supported catalysts due to high dispersion, whereas high hydrogenolysis activities were obtained for TiO2-supported catalysts due to the electronic interaction. Relatively large single-layered MoS2 structures were formed on the {110} γ-Al2O3 surface, whereas microclusters and multilayered MoS2 structures were more favorably formed on the {111} and {100} γ-Al2O3 surfaces. Multi-layered MoS2 structures had the edge-bonding orientation on anatase-TiO2 with an epitaxial relationship by sulfidation in H2S/N2. Single-layered MoS2 catalysts exhibited relatively hydrogenation-oriented function, whereas multilayered MoS2 catalysts had relatively hydrogenolysis-oriented function. Steric hindrance affected the catalytic functions, particularly in hydrogenation that required η 6 adsorption of aromatic rings. Long-term uses in hydrotreating caused growth of the MoS2 structures in the lateral direction, which decreased the number of active sites. Simultaneously, the aging caused deep sulfiding of the catalysts, which weakened the interaction with the support and increased the intrinsic activities of the catalysts.

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“…MoO 3 /TiO 2 composites have attracted much attention in many industrial reactions, such as hydrodesulfurization (HDS), selective reduction, and isomerization [1][2][3][4][5]. Due to the synergetic effect between TiO 2 and molybdenum species, MoO 3 /TiO 2 composites present excellent catalytic performance compared with other molybdenum composites [2,6,7].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Mesoporous MoO3/TiO2 Composite with High Surface Area by Self-Supporting and Ammonia Method

Wang

Shi

et al. 2012

Catal Lett

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A mesoporous MoO 3 /TiO 2 composite was prepared from titanate derivative by consecutive self-supporting and ammonia method. All samples were characterized by X-ray Diffraction, N 2 adsorption-desorption, Raman Spectra and Field-Emission Scanning Electron Microscopy. The results showed that mesoporous MoO 3 / TiO 2 composite had a higher surface area (173 m 2 /g) and a better MoO 3 dispersion than that prepared by traditional impregnation (90 m 2 /g). As for hydrodesulfurization tests, mesoporous MoO 3 /TiO 2 composite in this case presented a better catalytic performance, attributed to its high surface area and good dispersion of MoO 3 . It can be found that self-supporting played a key role in preparing mesoporous MoO 3 /TiO 2 composite with high surface area. Additionally, aqueous ammonia could effectively dissolve excess MoO 3 , which helped to obtain mesoporous MoO 3 /TiO 2 composite with better dispersion of MoO 3 .

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New generation of titanium dioxide support for hydrodesulfurization

Cited by 85 publications

References 18 publications

An Overview of Hydrodesulfurization and Hydrodenitrogenation

An Overview of Hydrodesulfurization and Hydrodenitrogenation

Morphology, Dispersion and Catalytic Functions of Supported Molybdenum Sulfide Catalysts for Hydrotreating Petroleum Fractions

Preparation and Characterization of Mesoporous MoO3/TiO2 Composite with High Surface Area by Self-Supporting and Ammonia Method

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