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$CO_{2}$ Methanation: Nickel–Alumina Catalyst Prepared by Solid-State Combustion
| Content Provider | MDPI |
|---|---|
| Author | Netskina, Olga Mucha, Svetlana Veselovskaya, Janna Bolotov, Vasily Komova, Oxana Ishchenko, Arkady Bulavchenko, Olga Prosvirin, Igor Pochtar, Alena Rogov, Vladimir |
| Copyright Year | 2021 |
| Description | 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 $CO_{2}$ 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 $(H_{2}$-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% $CO_{2}$. In addition, the synthesized catalyst had higher activity in low-temperature $CO_{2}$ 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. |
| Starting Page | 6789 |
| e-ISSN | 19961944 |
| DOI | 10.3390/ma14226789 |
| Journal | Materials |
| Issue Number | 22 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-11-10 |
| Access Restriction | Open |
| Subject Keyword | Materials Environmental Engineering Co2 Methanation Nickel–alumina Catalyst Solid-state Combustion Method Catalyst Activation |
| Content Type | Text |
| Resource Type | Article |
