Fabrication of porous metal by selective laser melting as catalyst support for hydrogen production microreactor |
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| Affiliation: | 1. School of Mechatronics Engineering, Foshan University, Foshan, 528000, China;2. Department of Mechanical & Electrical Engineering, Xiamen University, Xiamen, 361005, China;1. School of Mechanical & Automotive Engineering, South China University of Technology, Guangzhou, 510640, China;2. Department of Mechanical & Electrical Engineering, Xiamen University, Xiamen, 361005, China;1. School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, 518055, China;2. Institute of Hydrogen and Fuel Cell, Harbin Institute of Technology, Shenzhen, 518055, China;1. The State Key Lab of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, PR China;2. Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, PR China;1. Department of Mechanical & Electrical Engineering, Xiamen University, Xiamen 361005, China;2. Shenzhen Research Institute of Xiamen University, Shenzhen 518000, China;3. College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China |
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| Abstract: | To improve the hydrogen production performance of microreactors, the selective laser melting method was proposed to fabricate the porous metals as catalyst supports with different pore structures, porosities, and materials. The influence of the porous structures on the molecule distribution after passing through the porous metals was analyzed by molecular dynamics simulation. The developed porous metals were then used as catalyst supports in a methanol steam reforming microreactor for hydrogen production. Our results show that the porosity of the porous metal had significantly influence on the catalyst infiltration and the reaction process of hydrogen production. A lower degree of catalyst infiltration of the porous metal was obtained with lower porosity. A copper layer-coated stainless-steel porous metal with a staggered structure and gradient porosity of 80%–60% exhibited much larger methanol conversion and H2 flow rate due to its better heat and mass transfer characteristic. Methanol conversion and H2 flow rates could reach 97% and 0.62 mol/h, respectively. Finally, it was found that the experimental results were in good agreement with the simulation results. |
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| Keywords: | Microreactor Porous metal Selective laser melting Hydrogen production 3D printing |
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