| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Direct Vat Photopolymerisation of Hierarchically Porous SiC Loaded With Co/Ni Based Catalysts by Utilising Pickering Emulsions |
| Author(s) |
Terence Yan King Ho, Kah Sheng Pung, Daniel Wen Hao Lock, Zehui Du, Chee Lip Gan |
| On-Site Speaker (Planned) |
Terence Yan King Ho |
| Abstract Scope |
Hierarchically porous silicon carbide (SiC) is an important catalyst support widely used in various gas and liquid catalytic processes. Conventional approaches to fabricate such SiC have limited design flexibility and a separated catalyst-loading step is necessitated. Herein, a direct one-step approach to vat photopolymerise hierarchically porous SiC ceramics loaded with Co/Ni based catalysts is demonstrated by utilising Pickering emulsions. Control over pore size range (~10–50 μm) and porosity could be successfully attained via tuning of the Pickering emulsions compositions. The printed SiC ceramics were successfully sintered, offering a porosity range of ~50 – 70% and possessed ~40% better mechanical strength as compared to their non-hierarchical counterpart. By dissolving metal salts into the aqueous phase of Pickering emulsions, complex architected structures with SiC matrix loaded with Co/Ni based salts could be printed in-situ. Thermal conversion of these salts anchor them to the matrix, and allow for excellent catalytic activity and recyclability. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Ceramics, Composites |