Mesoporous Al-HMS and Al-MCM-41 supported Ni-Mo sulfide catalysts for HYD and HDS via in situ hydrogen generation through a WGSR

Вутолкина, А. В.; Glotov, Aleksandr; Zanina, Anna; Makhmutov, D. F.; Maximov, A. L.; Egazar’yants, S. V.; Караханов, Э. А.

doi:10.1016/j.cattod.2018.11.030

Cited by 43 publications

(13 citation statements)

References 48 publications

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“…Such systems are resistant to СО, which allows the hydrogenation to be performed in the СО-water system using hydrogen formed in situ by the reaction of CO with H 2 O. Both supported catalysts [28] and dispersions of nanosized sulfides of the corresponding metals [29,30] can be used in the process. The advantages of the unsupported dispersed catalysts are high specific surface area, high content of the active components, and resistance to catalytic poisons.…”

Section: Doi: 101134/s0965544121100078mentioning

confidence: 99%

Biphenyl Hydrogenation with Syngas for Hydrogen Purification and Transportation: Performance of Dispersed Catalytic Systems Based on Transition Metal Sulfides

et al. 2021

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The feasibility of biphenyl hydrogenation with syngas for hydrogen purification and binding with the aim of its transportation was demonstrated. Specific features of the hydrogenation of biphenyl as a promising organic hydrogen carrier using unsupported Ni–Mo sulfide catalysts were studied. In particular, the influence of temperature, reaction time, presence of water in the system, and Н2/СО gas mixture composition on the substrate conversion and selectivity with respect to products was examined. The highest conversion and the maximal hydrogen uptake are reached at 380°С in 6–8 h. The dispersed catalysts are active in biphenyl hydrogenation at the CO concentration in the Н2/СО gas mixture of up to 50 vol %, and H2O can act in this case as an in situ hydrogen source owing to the occurrence of the water-gas shift reaction.

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Section: Doi: 101134/s0965544121100078mentioning

confidence: 99%

Biphenyl Hydrogenation with Syngas for Hydrogen Purification and Transportation: Performance of Dispersed Catalytic Systems Based on Transition Metal Sulfides

et al. 2021

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“…The low-temperature N 2 adsorption-desorption isotherms are plotted in Figure 2, and the texture parameters are itemized in Table 1. According to the IUPAC classification, the HTiMCM-41 and HAlMCM-41 materials present isotherms of type IV (Figure 2A,B), showing a sharp inflection at a relative pressure of around p/p 0 = 0.3-0.4, which is characteristic of well-ordered mesoporous sieves [27]. However, the second inflexion and hysteresis of type H3 can be observed for the samples above the relative pressure of 0.45, which is attributed to the capillary condensation of nitrogen within the interparticles, macropores, and/or some impurity phases (e.g., aluminium or titanium species which have not been substituted in the structure of the material).…”

Section: Characterization Of Supports and Catalystsmentioning

confidence: 99%

Hydrodesulfurization of 4,6-Dimethyldibenzothiophene and the Diesel Oil Fraction on NiMo Catalysts Supported over Proton-Exchanged AlMCM-41 and TiMCM-41 Extrudates

et al. 2021

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NiMo catalysts supported on mesoporous MCM-41 type materials shaped with binder were tested for activity in the hydrodesulfurization of 4,6-dimethyldibenzothiophene (4,6-DMDBT) and the diesel fuel fraction (0.92 wt% of sulfur). The aim of the investigation was to evaluate the effect of ion exchange with protons of Al- or Ti-substituted MCM-41 mesoporous supports. The subjected catalytic systems were NiMo/HAlMCM-41 and NiMo/HTiMCM-41, and for comparison purposes NiMo/AlMCM-41 and NiMo/TiMCM-41. The samples were characterized by N2 sorption (at 77 K), XRD, TEM, XPS, SEM and Py–IR. It was found that the functionalization of AlMCM-41 and TiMCM-41 with protons increased the conversion of 4,6-DMDBT and the pseudo-first-order rate constant. Correspondingly, 4,6-DMDBT HDS reactions over the NiMo/HTiMCM-41 catalyst proceeded to a similar extent via hydrogenation and direct desulfurization, whereas over the NiMo/HAlMCM-41 they proceeded mainly via direct desulfurization. Furthermore, the ion-exchanged catalysts displayed two-fold higher efficiency in direct desulfurization than their non-modified counterparts. The NiMo/HTiMCM-41 catalyst exhibited the highest catalytic efficiency in the HDS of 4,6-DMDBT and the diesel oil fraction. The high activity of the NiMo/HTiMCM-41 catalyst is mainly attributed to its appropriate acidity, as well as the metal–support interaction providing both the high dispersion of the active phase and the desirable multilayered stacking morphology of the active phase slabs.

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“…The mesoporous silicates such as MCM-41 and SBA-15 have received great attention in the last decades due to their excellent properties as catalyst support in hydrotreating reactions [30][31][32][33][34][35][36]. These catalysts have reported a high catalytic activity in the HDS of DBT than their counterpart supported on alumina.…”

Section: Hds Catalysts Supported On Mesoporous Silicatesmentioning

confidence: 99%

The Silicon on the Catalysis: Hydrodesulfurization of Petroleum Fractions

Cabrera‐Munguía¹,

Rosales-Marines²,

Rubio-Ríos³

et al. 2019

Silicon Materials

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The use of silicon in hydrodesulfurization (HDS) catalysts has had an impact on some of the fundamental parameters for the performance of the HDS catalyst, such as dispersion of the active phase, the extent of sulfidation, or the level of promotion. Mesoporous silicates such as MCM-41, SBA-15, the modified surface of γ-alumina with silica, or mixed Al 2 O 3-SiO 2 support have showed to affect the metal-support interaction, favoring the so-called type II Co(Ni)-Mo(W)-S structures. The aim of this chapter is to elaborate an analysis on the recent advances in the synthesis design of silicon catalyst support for the hydrodesulfurization of petroleum fractions.

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Mesoporous Al-HMS and Al-MCM-41 supported Ni-Mo sulfide catalysts for HYD and HDS via in situ hydrogen generation through a WGSR

Cited by 43 publications

References 48 publications

Biphenyl Hydrogenation with Syngas for Hydrogen Purification and Transportation: Performance of Dispersed Catalytic Systems Based on Transition Metal Sulfides

Biphenyl Hydrogenation with Syngas for Hydrogen Purification and Transportation: Performance of Dispersed Catalytic Systems Based on Transition Metal Sulfides

Hydrodesulfurization of 4,6-Dimethyldibenzothiophene and the Diesel Oil Fraction on NiMo Catalysts Supported over Proton-Exchanged AlMCM-41 and TiMCM-41 Extrudates

The Silicon on the Catalysis: Hydrodesulfurization of Petroleum Fractions

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