Enhanced HDS and HYD activity of sulfide Co-PMo catalyst supported on alumina and structured mesoporous silica composite

Glotov, Aleksandr; Вутолкина, А. В.; Vinogradov, N. A.; Пимерзин, А. А.; Винокуров, В. А.; Pimerzin, Aleksey A.

doi:10.1016/j.cattod.2020.10.010

Cited by 37 publications

(1 citation statement)

References 60 publications

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“…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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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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Hydrodesulfurization of Dibenzothiophene: A Machine Learning Approach

Castro,

Cruz‐Borbolla,

Galván

et al. 2024

ChemistryOpen

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The hydrodesulfurization (HDS) process is widely used in the industry to eliminate sulfur compounds from fuels. However, removing dibenzothiophene (DBT) and its derivatives is a challenge. Here, the key aspects that affect the efficiency of catalysts in the HDS of DBT were investigated using machine learning (ML) algorithms. The conversion of DBT and selectivity was estimated by applying Lasso, Ridge, and Random Forest regression techniques. For the estimation of conversion of DBT, Random Forest and Lasso offer adequate predictions. At the same time, regularized regressions have similar outcomes, which are suitable for selectivity estimations. According to the regression coefficient, the structural parameters are essential predictors for selectivity, highlighting the pore size, and slab length. These properties can connect with aspects like the availability of active sites. The insights gained through ML techniques about the HDS catalysts agree with the interpretations of previous experimental reports.

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The Effect of Lithium on NiMo/Al2O3 Hydrotreating Catalysts Prepared from Heteropolycompounds

Kaluža

Jirátová

Spojakina³

et al. 2023

Catal Lett

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Enhanced HDS and HYD activity of sulfide Co-PMo catalyst supported on alumina and structured mesoporous silica composite

Cited by 37 publications

References 60 publications

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

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

Hydrodesulfurization of Dibenzothiophene: A Machine Learning Approach

The Effect of Lithium on NiMo/Al2O3 Hydrotreating Catalysts Prepared from Heteropolycompounds

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