南京理工大学学报（自然科学版）2026，Vol.50Issue(4)：420-433,14.DOI:10.14177/j.cnki.32-1397n.2026.50.04.005
五元铁基氧载体深度释氧能力及废塑料化学链制氢研究
Enhanced oxygen release performance of penta-elemental iron-based oxygen carriers and chemical looping hydrogen production via waste plastics
摘要
Abstract
As the core clean carrier of energy transformation,the hydrogen production is still limited by the high energy consumption and high carbon emission of traditional processes.The chemical looping hydrogen production technology based on the principle of chemical looping combustion achieves efficient hydrogen production and in-situ separation of products through lattice oxygen transfer of oxygen carriers,in which the performance of oxygen carriers is the key bottleneck of industrialization.In this study,five groups of A-site single metal modified spinel ferrites(AFe2O4,A=Cu,Ni,Mn,Sr,Ca)and five-element oxygen carriers(Cu0.2 Ca0.2 Ni0.2 Mn0.2 Sr0.2 Fe2O4)were designed and prepared by high-temperature solid-state-ball milling method.The characterization of X-ray diffraction(XRD)and H2 temperature-programmed reduction(H2-TPR)confirmed that the five-membered system composite oxygen carrier significantly balanced the lattice oxygen activity and structural stability through the"dilution effect"of multiple metals.The fixed bed experiment using polypropylene waste plastic as fuel shows that when the oxygen carrier supply coefficient is 0.5,the purity of hydrogen production catalyzed by the five-element oxygen carrier reaches 93.03%,which is 32.4%-45.8%higher than that of the binary system.After reduction,the main phase structure of spinel is still maintained in the five-membered system,while the pure Fe2O3 is transformed into Fe3O4 due to phase transition sintering,which leads to cycle failure.This study shows that the synergistic effect of multi-metals can break through the"activity-stability"trade-off problem of oxygen carriers and provide a high-performance material solution for hydrogen production from waste plastics.关键词
化学链/制氢/晶格氧/废塑料/尖晶石Key words
chemical looping/hydrogen production/lattice oxygen/waste plastics/spinel分类
能源科技引用本文复制引用
马涛,许婷婷,刘冬,翟俊程,杜欣怡,黄椹明,戎宇航,程文杰,刘沛东,龚东华,汤宇晨..五元铁基氧载体深度释氧能力及废塑料化学链制氢研究[J].南京理工大学学报（自然科学版）,2026,50(4):420-433,14.基金项目
中央高校基本科研业务费专项资金(30923010208) （30923010208）
