Direct ink writing of porous cordierite honeycomb ceramic |
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| Affiliation: | 1. Division of Energy and Environment, Graduate School at Shenzhen, Tsinghua University, Tsinghua Campus, The University Town, Shenzhen, 518055, PR China;2. Environment Functional Materials Division, Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, PR China;1. School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China;2. State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China;3. College of Information Science and Engineering, Wuhan University of Science of Technology, Wuhan, 430081, China;1. Department of Industrial Engineering, University of Padova, Via Marzolo 9, Padova 35131, Italy;2. Ceramics Department, National Research Centre, El-Bohous Street, 12622 Cairo, Egypt;3. Institute of Power Engineering Ceramic Department CEREL, ul. Techniczna 1, 36-040 Boguchwala, Poland;4. Rzeszow University of Technology, Powstańców Warszawy Ave, 35-959 Rzeszow, Poland;5. Department of Materials Science and Engineering, Institute of Glass and Ceramics, University of Erlangen-Nürnberg (FAU), Martensstr. 5, 91058 Erlangen, Germany;6. Frontier Research Institute for Materials Science, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan;7. Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA 16801, United States;1. State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, China;2. State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China |
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| Abstract: | Herein, we fabricated honeycomb ceramics with different porosities and pore shapes via the layer-by-layer deposition of cordierite (2MgO·2Al2O3·5SiO2) particle ink, obtaining proper rheological properties using a direct-writing technology. No collapses as well as minimal cracking and bending were observed in the internal structure of the samples after calcination. We measured and compared the internal porosity and specific surface area of honeycomb ceramics with the same pore shape but different pore dimensions, as well as the same pore dimension but different pore shapes. The samples were both loaded with an γ-Al2O3 washcoat and Pd-based catalyst using the same method for the catalytic combustion of toluene. The different porosity and pore shape influenced the catalytic efficiency. This study may provide some useful guidelines for fabrication of honeycomb ceramics by direct writing technology, which could be used to remove volatile organic pollutants(VOCs). |
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| Keywords: | Direct ink writing Rheology Honeycomb ceramic Catalytic combustion |
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