ИССЛЕДОВАНИЕ КАТАЛИЗАТОРОВ НА ОСНОВЕ МЕЗОПОРИСТОГО АЛЮМОСИЛИКАТА В ПРОЦЕССЕ ДЕАРОМАТИЗАЦИИ МОДЕЛЬНОЙ СМЕСИ: ФИЗИКО-ХИМИЧЕСКИЕ ХАРАКТЕРИСТИКИ И КАТАЛИТИЧЕСКАЯ АКТИВНОСТЬ

Ограничение на содержание ароматических углеводородов и серы связано с требованиями экологических стандартов Euro-5. При сгорании эти вещества высвобождают высокотоксичные соединения в атмосферу, негативно воздействуя на здоровье человека и окружающую среду. Кроме того, высокая концентрация ароматических углеводородов в дизельном топливе существенно снижает его качество, приводя к образованию сажи и уменьшению цетанового числа. Согласно стандартам Euro-5, содержание полициклических ароматических углеводородов и соединений серы не должно превышать 8% и 10 мг/кг соответственно. Для решения задачи производства высококачественного дизельного топлива используется процесс гидроочистки в присутствии гетерогенных катализаторов.
В статье представлен синтез мезопористых алюмосиликатов и бифункциональных катализаторов на их основе для изучения активности процесса гидроочистки на модельной смеси. Полученные образцы исследовались с использованием различных физикохимических методов, таких как СЭМ, адсорбция/десорбция азота при низкой температуре, рентгеноструктурный анализ и Фурье-преобразование инфракрасного спектра. Было установлено, что катализаторы Ni/MAS-H-бентонит и Mo/MAS-H-бентонит проявляют высокую активность и селективность в процессе гидроочистки при оптимальных условиях (240°C, 3 МПа и 0,5 ч^-1).

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