文献类型：期刊文献

英文题名：Structured nanoporous Cu/ZnO catalysts for on-board methanol steam reforming prepared by laser powder bed fusion and dealloying

作者：Li, Chuandong[1];Yao, Xinqi[1];Zhang, Ruhang[1];Zheng, Hongxiang[1];Yuan, Shuaishuai[1];Yu, Xinhai[1];Li, Bo[2];Zhu, Minghui[3];Tu, Shan-Tung[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety MOE, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Addit Mfg & Intelligent Equipment Res Inst, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：487

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20241415837466);WOS:【SCI-EXPANDED(收录号:WOS:001218927200001)】；

基金：This study was financially supported by China Natural Science Foundation (Contract No. 21476073, 21176069 and 21878078) .

语种：英文

外文关键词：Structural catalysts and reactors; Methanol steam reforming; Metal 3D printing; Dealloying; Induced activation

摘要：The development of efficient structural catalysts and reactors (SCRs) for on-board methanol steam reforming (MSR) has long been a focal point. Traditional MSR SCRs exhibit problems such as poor heat transfer, low catalyst loading, and coating delamination. In this study, novel three-dimensional graded nanoporous Cu/ZnO (3DNP-Cu/ZnO) SCRs were prepared via metal 3D printing technology and dealloying. For 3DNP-Cu/ZnO SCRs activated with MeOH/H 2 O steam, both the interfacial area of Cu-ZnO and the Cu + /(Cu 0 + Cu + ) molar ratio were greater than those of catalysts activated with H 2 /N 2 mixtures. The experimental results showed that a 3DNP-Cu/ ZnO SCR activated with MeOH/H 2 O for 20 min exhibited a high methanol conversion rate of 98.3 % with a CO selectivity of 0.86 % (with a reaction temperature of 280 degrees C, a water-to-alcohol molar ratio of 1.3 and a weight hourly space velocity of 30 h -1 ). The superior catalytic activity was attributed to the high Cu + /(Cu + +Cu 0 ) ratio, which enabled the generation of *CHOO during the MSR reaction. Additionally, the 3DNP-Cu/ZnO SCRs demonstrated low pressure drops and high mechanical strengths. Computational fluid dynamics simulations showed that the gyroid lattice-structured catalyst achieved a high H 2 concentration due to its high mass and heat transfer. 3DNP-Cu/ZnO SCRs provide a new strategy for the preparation of MSR SCRs with broad application prospects.