Synthesis, characterization and catalytic activity during hydrodesulphurization of dibenzothiophene of NiMoW catalysts supported on AlTi mixed oxides modified with MgO

Cervantes-Gaxiola, Maritza E.; Arroyo-Albiter, Manuel; Maya-Yescas, Rafael; Rico-Cerda, José Luis; Guevara-Lara, Alfredo; Valencia, Jaime Espino

doi:10.1016/j.fuel.2011.12.040

Cited by 18 publications

(2 citation statements)

References 55 publications

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“…But also a band between 807 and 818 nm were detected, which was associated to nickel species with octahedral symmetry distorted; this latter may be related to an interaction Ni-W [41,42]. In addition, the catalysts prepared at pH 9 bands at 804 and 820 nm ascribed to nickel with octahedral distortion were also detected similarly to the catalyst synthesized at pH 7 [43].…”

Section: Hds Catalysts Supported On Mesoporous Silicatesmentioning

confidence: 69%

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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Section: Hds Catalysts Supported On Mesoporous Silicatesmentioning

confidence: 69%

The Silicon on the Catalysis: Hydrodesulfurization of Petroleum Fractions

Cabrera‐Munguía¹,

Rosales-Marines²,

Rubio-Ríos³

et al. 2019

Silicon Materials

View full text Add to dashboard Cite

show abstract

“…It has been reported in the literature that the rational design of the support may improve the performance of hydrotreating catalyst by tuning the sulfide component composition, morphology, and dispersion. − Due to this, recently, to improve hydrotreating catalysts, approaches based on the use of composite supports consisting of alumina and materials characterized by other acid–base (TiO 2 , , SiO 2 , MCM-41, MgO, , TiO 2 –MgO ) or neutral (various carbon material − ) properties were proposed. In this regard, much attention has been paid to developing composite supports based on alumina and various carbon materials primarily because each has advantages when used as a support for hydrotreating catalysts.…”

Section: Introductionmentioning

confidence: 99%

Sorbitol Derived Carbon Coated Alumina Composite as a Promising Support for CoMoS Hydrotreating Catalyst

Kazakova,

Parfenov,

Golubtsov

et al. 2024

Ind. Eng. Chem. Res.

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The beneficial impact of carbon coated alumina (C@Al 2 O 3 ) implemented as support for the CoMoS hydrotreating catalyst has been demonstrated. A series of C@Al 2 O 3 supports with varying carbon contents were obtained by pyrolysis of sorbitol preliminarily impregnated in alumina from an aqueous solution. It was found that carbon coating positively affects the formation of the high-active CoMoS phase. However, control of the carbon content from 2.3 to 11.3 wt % is essential to maintain the sulfide particles dispersion and textural properties. CoMoS/C@Al 2 O 3 catalysts demonstrated superior hydrodesulfurization activity compared with CoMoS/Al 2 O 3 . The hydrodenitrogenation activity of most CoMoS/C@Al 2 O 3 samples is similar to CoMoS/Al 2 O 3 but decreases when the carbon content in the support exceeds 11.3 wt %. The determining factor in improving the CoMoS/C@Al 2 O 3 hydrodesulfurization activity is the formation of defective graphene fragments, which partially cover the alumina surface and help to reduce the support acidity and, therefore, metal−support interaction while maintaining the textural characteristics.

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Room Temperature Synthesis and Characterization of Hybrid Nanoparticles of NiMo over the Surface of Mixed Oxides (Al2O3–TiO2 and Al2O3–ZrO2) Using Ultrasound Radiation

Gholizadeh

Ghiaci

2014

Catal Lett

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Synthesis, characterization and catalytic activity during hydrodesulphurization of dibenzothiophene of NiMoW catalysts supported on AlTi mixed oxides modified with MgO

Cited by 18 publications

References 55 publications

The Silicon on the Catalysis: Hydrodesulfurization of Petroleum Fractions

The Silicon on the Catalysis: Hydrodesulfurization of Petroleum Fractions

Sorbitol Derived Carbon Coated Alumina Composite as a Promising Support for CoMoS Hydrotreating Catalyst

Room Temperature Synthesis and Characterization of Hybrid Nanoparticles of NiMo over the Surface of Mixed Oxides (Al2O3–TiO2 and Al2O3–ZrO2) Using Ultrasound Radiation

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