ГИБРИДНЫЕ МЕТАЛЛ-ЦЕОЛИТНЫЕ КАТАЛИЗАТОРЫ СИНТЕЗА ФИШЕРА – ТРОПША ДЛЯ ПОЛУЧЕНИЯ ФРАКЦИИ УГЛЕВОДОРОДОВ С5–С18

Для прямого синтеза фракции углеводородов С5–С18 из СО и Н2 приготовлены гибридные металлеолитные катализаторы, модифицированные переходными металлами (Pd, Fe, Co, Ni). Методами температурно-программированного восстановления и адсорбции кислорода исследовано состояние активного компонента катализатора (дисперсность, удельная поверхность и степень восстановления Со). Определены каталитические характеристики образцов. Испытания проводили в проточном трубчатом реакторе диаметром 1,3 см при 2 МПа и температуре от 210 до 250 °С на катализаторе фракции 0,1–0,2 мм, навеска – 2,5 см3. Установлено, что активность образцов увеличивается в ряду Co < Fe < Ni. С целью оптимизации состава системы изучены характеристики катализатора с варьируемым содержанием никеля: 2, 4, 6 и 8 мас.%. Максимальный выход жидких углеводородов из СО и Н2 (120 г/м3 синтез-газа) получен на катализаторе, содержащем 4 мас.% Ni. Проведены испытания на гранулах (1,5–3,5 мм) этого катализатора в реакторе с увеличенной загрузкой (50 см3), показавшие возможность его применения в опытно-промышленных установках.

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