Effect of dibenzothiophene on the hydrogenation of aromatic hydrocarbons over mesoporous materials

Авторлар

DOI:

10.15328/cb2026_121

Кілт сөздер:

mesopores, aluminosilicates, Si/Al, aromatic compounds, catalyst

Аңдатпа

This study investigates the effect of dibenzothiophene on the hydrogenation of aromatic hydrocarbons over bifunctional catalysts based on mesoporous Al-HMS aluminosilicates. Mesoporous aluminosilicate materials with different Si/Al ratios varying from 10 to 70 were synthesized and employed as supports for Ni-Mo-Al-HMS-H-bentonite catalysts. The physico-chemical features of the materials were characterized using ICP-OES, nitrogen physisorption at low temperatures, XRD, FTIR, and pyridine adsorption FTIR spectroscopy. Catalytic activity was evaluated in the hydrogenation of a model mixture of 2-methylnaphthalene and n-hexadecane at temperatures between 220-300°C and at 6 MPa H2. The optimal catalytic performance was observed for the sample with a Si/Al ratio of 10, displaying high conversion and selectivity to 2-methyldecalin as a result of sufficient Brønsted and Lewis acidity. The presence of dibenzothiophene leads to a decrease in conversion and selectivity due to sulfur-induced catalyst poisoning and shifts the optimal reaction temperature from 240 to 260°C. These findings highlight the important role of acid properties of mesoporous aluminosilicates in hydrogenation and hydrotreatment processes of aromatic compounds.

Автор өмірбаяндары

  • A. Abdrassilova, Institute of Combustion Problems, Kazakh-British Technical University

    PhD, Leading Researcher at the Institute of Combustion Problems, Assistant Professor at the Kazakh-British Technical University

  • G. Vassilina, Almaty Technological University

    Candidate of Chemical Sciences, Associate Professor, Head of the Department of Rankings and Analytics

  • K. Abdildina, Al-Farabi Kazakh National University

    PhD, Lecturer

  • T. Abildin, Al-Farabi Kazakh National University

    Doctor of Chemical Sciences, Chief Researcher 

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Жарияланды

2026-06-30

Журналдың саны

Нөмір 119 № 2 (2026): ҚазҰУ Хабаршысы. Химия Сериясы (Дайындық процесінде)

Бөлім

Catalysis and Petrochemistry

Лицензия

Авторлық құқық (c) 2026 A. Abdrassilova, G. Vassilina, K. Abdildina, T. Abildin

Creative Commons лицензиясы

Бұл жұмыс Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 Дүние жүзінде.

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License (CC BY-NC-ND 4.0) that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

Дәйексөзді қалай келтіруге болады

Effect of dibenzothiophene on the hydrogenation of aromatic hydrocarbons over mesoporous materials. (2026). ҚазҰУ Хабаршысы. Химия сериясы, 119(2), In Press. https://doi.org/10.15328/cb2026_121

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