Окислювальне дегідрування пропану за участю м’яких окисників (N2O та СО2) на металоксидних цеолітних каталізаторах

• Дата: 2024
• Автори: Chedryk, Valeriy I., Boichuk, Tetiana M., Kurmach, Mykhailo M., Yaremov, Pavlo S., Kapran, Andriy Yu., Orlyk, Svitlana M.
• Формат: Стаття
• Мова: Українська
• Опубліковано: V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine 2024
• Теми: окиснювальне дегідрування пропану; метал(оксидні) цеолітні композиції; HZSM-5; MTW; кислотність поверхні
• Онлайн доступ: https://kataliz.org.ua/index.php/journal/article/view/107
• Назва журналу: Catalysis and petrochemistry

The paper presents the results of the study of textural and acidic characteristics of metal (oxide)-zeolite compositions M-BEA (MTW, MOR, ZSM-5) (М = Ga, Fe, Co, In) and their influence on catalytic properties in the oxidative dehydrogenation of propane to propylene with the participation of CO2 and N2O/ODP-СО2 (N2O). The ODP-N2O process was investigated on indium-, cobalt-, and iron-oxide compositions based on zeolites of structural types BEA, MOR, and ZSM-5 (H-form). The best indices of propylene production were achieved on the sample 10 %Fe2O3/HZSM-5 at the temperature 400 °С: the selectivity of formation and yield of propylene are SС3Н6 = 40 % and YС3Н6 = 21 % at the conversion of С3Н8 – 53 % and N2O – 85 %. In the ODP-СО2 process, among the samples of gallium-containing zeolites of the MTW, BEA, and MOR structure (for the Si/Ga ratio = 15-24), higher indices of selectivity are 70 % and propylene yield – 26 % (at XC3H8 = 37.5 %, 600 °С), were achieved on the Ga5.0MTW catalyst (Si/Ga = 24), which is characterized by a developed mesoporous structure, the largest surface (SBET = 585 m2/g) and the highest concentration of weak, medium and strong acid Lewis sites (according to the FTIR-Py data).