CO2 Methanation: Nickel–Alumina Catalyst Prepared by Solid-State Combustion
| Autor: | Oxana V. Komova, Igor P. Prosvirin, A.A. Pochtar, Janna V. Veselovskaya, O.V. Netskina, Olga A. Bulavchenko, A. V. Ishchenko, Vasily Bolotov, Svetlana Mucha, Vladimir A. Rogov |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Green chemistry
Technology Materials science Hydrogen chemistry.chemical_element engineering.material Article Catalysis X-ray photoelectron spectroscopy Methanation General Materials Science Microscopy QC120-168.85 Nickel oxide solid-state combustion method QH201-278.5 Spinel nickel–alumina catalyst CO2 methanation Engineering (General). Civil engineering (General) TK1-9971 Nickel Descriptive and experimental mechanics chemistry Chemical engineering engineering Electrical engineering. Electronics. Nuclear engineering TA1-2040 catalyst activation |
| Zdroj: | Materials Volume 14 Issue 22 Materials, Vol 14, Iss 6789, p 6789 (2021) |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma14226789 |
| Popis: | The development of solvent-free methods for the synthesis of catalysts is one of the main tasks of green chemistry. A nickel–alumina catalyst for CO2 methanation was synthesized by solid-state combustion method using hexakis-(imidazole) nickel (II) nitrate complex. Using X-ray Powder Diffraction (XRD), Transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Hydrogen temperature-programmed reduction (H2-TPR), it was shown that the synthesized catalyst is characterized by the localization of easily reduced nickel oxide on alumina surface. This provided low-temperature activation of the catalyst in the reaction mixture containing 4 vol% CO2. In addition, the synthesized catalyst had higher activity in low-temperature CO2 methanation compared to industrial NIAP-07-01 catalyst, which contained almost three times more hard-to-reduce nickel–aluminum spinel. Thus, the proposed approaches to the synthesis and activation of the catalyst make it possible to simplify the catalyst preparation procedure and to abandon the use of solvents, which must be disposed of later on. |
| Databáze: | OpenAIRE |
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