The study of morphology effect of Pt/Co 3 O 4 catalysts for higher alcohol synthesis from CO 2 hydrogenation
| Autor: | Bi Ouyang, Bing Liu, Jinlin Li, Shuhao Xiong, Yuhua Zhang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010405 organic chemistry
Process Chemistry and Technology Nanoparticle chemistry.chemical_element Alcohol 010402 general chemistry 01 natural sciences Oxygen Catalysis 0104 chemical sciences chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy Yield (chemistry) Organic chemistry Nanorod Selectivity Nuclear chemistry |
| Zdroj: | Applied Catalysis A: General. 543:189-195 |
| ISSN: | 0926-860X |
| DOI: | 10.1016/j.apcata.2017.06.031 |
| Popis: | Two kinds of Co 3 O 4 with different morphologies (nanorods and naoplates) were used to support Pt nanoparticles to prepared Pt/Co 3 O 4 catalysts. The properties of the nano-structured Co 3 O 4 and Pt/Co 3 O 4 were characterized by XRD, SEM, TEM, H 2 -TPR and XPS techniques. The catalyst activity was studied in higher alcohol synthesis from CO 2 hydrogenation in fixed-bed reactor operated at 2 MPa and 190–230 °C. The catalyst gave a stable and relative higher CO 2 conversion and alcohol selectivity during 50 h under mild reaction condition. The morphology of Co 3 O 4 affected the catalyst’s CO 2 conversion and production selectivity. The active surface of Pt/Co 3 O 4 -p catalyst was high dispersed Pt and Co nanoparticles anchored on Co 3 O 4 support with some oxygen vacancies, evidenced by XRD results. The highest space time yield of higher alcohol (0.56 mmol g cat −1 h −1 ) was achieved at 200 °C and 2 MPa for Pt/Co 3 O 4 -p catalyst. |
| Databáze: | OpenAIRE |
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