Physicochemical and functional characteristics of materials and catalysts in protective layers of heterogeneous hydrotreatment processes. I. Materials of active filtering (MAF)

Ovsienko, O. L.; Dorokhov, V. S.; Guseva, A. I.; Криворученко, Д. С.; Pugacheva, L. V.; Sidel’nikov, I. V.; Nikul’shin, P. A.

doi:10.18412/1816-0387-2019-4-316-328

Cited by 3 publications

(1 citation statement)

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“…Nonetheless, the HDS of DF components over *MoS 2 + 100CH 3 OH(8) resulted in a 8-fold reduction in residual sulfur (S res = 62 ppm). According to published data, the hydrogen excess in hydroprocesses generally amounts to 200-600-1000-1200 times [19]. The experimental conditions implemented in the present study correspond to a four-fold H 2 defi ciency, which serves as evidence of a considerably higher resource provided by the novel catalysts studied here.…”

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confidence: 50%

Novel Molybdenite-Based Nanopowder Catalysts for Hydrodesulfurization

et al. 2021

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Novel bulk single-component sulfide catalysts were prepared under the conditions of solid-phase dispersion of МoS2 molybdenite at various mechanical treatment times and various amounts of polar and nonpolar liquid microadditives. The chemical degradation of the samples in the air was found to lead to the formation of surface sulfate anions that shield catalytically active Mo sites. Indirect correlations of the hydrodesulfurization ability of MoS2 powders with the concentration of sulfate anions on their surface, and with the aqueous pH in the powder suspensions, including the dielectric permittivity of the organic dopants, can serve as reference indicators of high catalytic activity in the model reaction of dibenzothiophene hydrogenolysis. The study identified the most active sample able to run for an extended time during multiple cycles without losing its catalytic properties. Also, the paper discusses the dibenzothiophene conversion routes, the product composition, the probable structure of active sites in the catalysts, and the desulfurization degree of diesel fuel components.

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Section: -mentioning

confidence: 50%

Novel Molybdenite-Based Nanopowder Catalysts for Hydrodesulfurization

et al. 2021

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Computer-Aided Modeling and Additive Manufacturing of Promising Protective Layer Materials for Catalytic Reactors

et al. 2021

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Filtration Performance of 3D-Printed Ceramic Pellets: Investigation Using CFD and Computed Tomography

Dorokhov,

Ovsienko,

Chugunov

et al. 2023

Neftehimiâ

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This study demonstrates the potential for computer-aided engineering and additive manufacturing techniques to fabricate protective layer materials with a novel design of filtration channels. Using computational fluid dynamics (CFD) simulation for channels of various geometries, potential locations of the capture of solid dust particles in ceramic filter pellets were identified. The filter pellets were fabricated from ceramic material using laser stereolithography. The printed samples were subjected to a filtration test. The CFD simulation of the pellet channels to identify potential filtration locations, followed by a comparative assessment of the simulation results and the post-test X-ray computed tomography (CT) scan of the 3D-printed pellets, demonstrated the feasibility of CFD models for the design of filter materials. The study findings are intended for the development of innovative protective materials with filtering capabilities to be implemented in specific industrial refining applications

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Physicochemical and functional characteristics of materials and catalysts in protective layers of heterogeneous hydrotreatment processes. I. Materials of active filtering (MAF)

Abstract: The results of studying physicochemical properties of fresh and industrially used materials of active filtering (MAF) used as protective layers of hydrotreatment catalysts are discussed. Data on functional properties of MAF of various types are obtained.

Cited by 3 publications

References 8 publications

Novel Molybdenite-Based Nanopowder Catalysts for Hydrodesulfurization

Novel Molybdenite-Based Nanopowder Catalysts for Hydrodesulfurization

Computer-Aided Modeling and Additive Manufacturing of Promising Protective Layer Materials for Catalytic Reactors

Filtration Performance of 3D-Printed Ceramic Pellets: Investigation Using CFD and Computed Tomography

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