Petroleum ChemistryPetroleum ChemistryНефтехимия0028-24213034-5626The Russian Academy of Sciences65563310.31857/S0028242123010021TWRVSQArticlesСтатьиResearch ArticleMolybdenum-Containing Catalysts Based on Porous Aromatic Frameworks as Catalysts of Oxidation of Sulfur-Containing CompoundsМолибденсодержащие катализаторы на основе пористых ароматических каркасов в качестве катализаторов окисления серосодержащих соединенийAkopyanA. VАкопянА. Вpetrochem@ips.ac.ruEsevaE. AЕсеваЕ. Аesevakatya@mail.ruLukashovM. OЛукашовМ. Оpetrochem@ips.ac.ruKulikovL. AКуликовЛ. Аpetrochem@ips.ac.ruDepartment of Chemistry, Moscow State UniversityМосковский государственный университет имени М.В. Ломоносова15022023631NO1 (2023)№1 (2023)203111022025Copyright ©; 2023, Russian Academy of SciencesCopyright ©; 2023, Российская академия наук2023Russian Academy of SciencesРоссийская академия наукhttps://journals.eco-vector.com/0028-2421/article/view/655633

New molybdenum-containing catalysts based on PAF-30 mesoporous carbon material for oxidation of sulfur-containing compounds (SCs) in a model fuel were synthesized. The PAF-30 support was modified with functional groups containing a positively charged nitrogen atom with various substituents. The modified supports were studied by the methods of low-temperature nitrogen adsorption/desorption, IR spectroscopy, and elemental analysis. The major factors affecting the oxidation were considered: reaction temperature and time, oxidant amount, catalyst dosage, and kind of sulfur-containing substrate. For the Мо/PAF-30-NEt3 catalyst, optimum conditions were found for oxidation of various classes of SCs in model mixtures: H2O2 : S molar ratio 6 : 1, 60°С, 60 min. The Мо/PAF-30-NEt3 catalyst operates in dibenzothiophene (DBT) oxidation during five cycles without appreciable activity loss.

Синтезированы новые молибденсодержащие катализаторы на основе мезопористого материала PAF-30 углеродной природы для процесса окисления серосодержащих соединений (СС) в модельном топливе. Полученный носитель PAF-30 модифицирован функциональными группами, содержащими положительно заряженный атом азота с различными заместителями. Модифицированные носители исследованы методами низкотемпературной адсорбции/десорбции азота, ИК-спектроскопии и элементного анализа. Рассмотрены основные факторы, влияющие на процесс окисления: температура и время реакции, количество окислителя, дозировка катализатора и природа серосодержащего субстрата. Для катализатора Мо/PAF-30-NEt3 подобраны оптимальные условия для окисления различных классов СС в модельных смесях: H2O2:S = 6:1 (мольн.), 60°С, 60 мин. Показано, что катализатор Мо/PAF-30-NEt3 работает в течение пяти циклов без значительной потери активности в реакции окисления дибензотиофен (ДБТ).

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