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Synthesis and Mathematical Modelling of the Preparation Process of Nickel-Alumina Catalysts with Egg-Shell Structures for Syngas Production via Reforming of Clean Model Biogas
| Content Provider | MDPI |
|---|---|
| Author | Latsiou, Angeliki I. Bereketidou, Olga A. Charisiou, Nikolaos D. Georgiadis, Amvrosios G. Avraam, Dimitrios G. Goula, Maria A. |
| Copyright Year | 2022 |
| Description | For the work presented herein nickel catalysts supported on γ-alumina extrudates (Ni/Al) with an egg-shell structure were prepared, using a modified Equilibrium Deposition Filtration (EDF) technique. Their performance was compared, for the biogas dry reforming reaction, with corresponding Ni/Al catalysts with a uniform structure, synthesized via the conventional wet impregnation method. The bulk and surface physicochemical characteristics of all final catalysts were determined using ICP-AES, $N_{2}$ adsorption-desorption isotherms, XRD, SEM, and TEM. A theoretical model describing the impregnation process for the EDF extrudates, based on the Lee and Aris model, was also developed. It was concluded that following specific impregnation conditions, the egg-shell macro-distributions can be successfully predicted, in agreement with the experimental results. It was shown that the Ni/Al catalysts with an egg-shell structure had a higher $H_{2}$ yield in comparison with the ones with a uniform structure. The difference in catalytic performance was attributed to the improved surface and structural properties of the egg-shell catalysts, resulting from the modified EDF technique used for their preparation. |
| Starting Page | 274 |
| e-ISSN | 20734344 |
| DOI | 10.3390/catal12030274 |
| Journal | Catalysts |
| Issue Number | 3 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-02-28 |
| Access Restriction | Open |
| Subject Keyword | Catalysts Environmental Engineering Biogas Reforming Syngas Production Nickel Catalysts Egg-shell Catalysts Surface Properties Transport Properties Theoretical Modeling |
| Content Type | Text |
| Resource Type | Article |
