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The Nature of Active Sites in PdCo/C Catalysts Prepared by Pyrolysis of Wood Sawdust Impregnated with Pd(NO3)2 and Co(NO3)2 in Hydrodechlorination of Chlorobenzeneдоклад на конференции
- Авторы: Klokov S.V., Lokteva E.S., Golubina E.V., Maslakov K.I., Isaikina O.Y., Trenikhin M.V.
- Международная Конференция : Mechanisms of Catalytic Reactions (MCR-XI). XI International Conference.
- Даты проведения конференции: 7-11 октября 2019
- Дата доклада: 9 октября 2019
- Тип доклада: Стендовый
- Докладчик: Klokov S.V.
- Место проведения: Сочи, Краснодарский край, Russia
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Аннотация доклада:
In this work PdCo/C catalysts were prepared by the pyrolysis of sawdust impregnated with metal nitrate solution, tested in chlorobenzene HDC and compared with monometallic Pd/C and Co/C catalysts. According to TPR H2 and XPS, palladium in the catalysts is present in the reduced state (Pd0) in contrast to cobalt which is present in oxidized state (mainly CoO). According to TEM, metals-containing nanoparticles are located on the surface and in the bulk of carbon material. Nanoparticles located on the surface are coated with thin carbon shell. The interplanar spacings for major part of Pd-containing particles in Pd/C are 2.26-2.37 Å, but the other particles have increased interplanar spacing (2.34-2.37 Å) probably due to PdCx formation on the surface of Pd particles. In PdCo(0.7)/C a few of nanoparticles with interplanar spacing of 2.36-2.41 Å, characteristic to PdCoO2, were observed, that indicates closer contact between two metals in PdCo(0.7)/C in comparison with PdCo(1.1)/C.
- Добавил в систему: Локтева Екатерина Сергеевна