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$Ni/CeO_{2}$ Catalyst Prepared via Microimpinging Stream Reactor with High Catalytic Performance for $CO_{2}$ Dry Reforming Methane
| Content Provider | MDPI |
|---|---|
| Author | Wang, Yadong Hu, Qing Wang, Ximing Huang, Yanpeng Wang, Yuanhao Wang, Fenghuan |
| Copyright Year | 2022 |
| Description | Methane reforming with carbon dioxide (DRM) is one promising way to achieve carbon neutrality and convert methane to syngas for high-value chemical production. Catalyst development with better performance is the key to its potential large-scale industrial application due to its deactivation caused by carbon deposition and metal sintering. Hence, a $Ni/CeO_{2}$ catalyst $(Ni/CeO_{2}$-M) with higher $CO_{2}$ conversion and better stability is prepared, supported on $CeO_{2}$ precipitated via a novel microimpinging stream reactor. A series of ex-situ or in-situ characterizations, such as CO titration measurements, two-step transient surface reaction (two-step TSR), $CO_{2}$ and $CH_{4}$ temperature-programmed surface reaction $(CO_{2}$-TPSR and $CH_{4}$-TPSR), X-ray absorption fine structure (XAFS), and in-situ Raman spectroscopy study, were used to investigate its structure and mechanism. In contrast to Ni supported on commercial $CeO_{2}$ $(Ni/CeO_{2}$-C), the $Ni/CeO_{2}$-M catalyst with stronger lattice oxygen mobility and higher oxygen storage capacity enhances its $CO_{2}$ activation ability and carbon deposition. The Ni particle size of the $Ni/CeO_{2}$-M catalyst decreased, and a higher oxidation state was obtained due to the strong metal–support interaction. Besides the reaction performance improvement of the $Ni/CeO_{2}$-M catalyst, the novel microimpinging stream reactor could achieve catalyst continuous production with a high preparation efficiency. This work provides a novel method for the high-performance catalyst preparation for DRM reaction and its mechanism study gives a deep insight into high-performance catalyst development via bottom-up study. |
| Starting Page | 606 |
| e-ISSN | 20734344 |
| DOI | 10.3390/catal12060606 |
| Journal | Catalysts |
| Issue Number | 6 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-06-02 |
| Access Restriction | Open |
| Subject Keyword | Catalysts Applied Chemistry Dry Reforming of Methane Oxygen Vacancy Ni/ceo2 Catalyst |
| Content Type | Text |
| Resource Type | Article |
