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稀土氧化物载体对镍基合金催化水合肼分解制氢性能的助催化作用机制研究

批准号51701156 学科分类金属能源和环境材料 ( E010504 )
项目负责人钟玉洁 负责人职称讲师 依托单位西安石油大学
资助金额25.00
万元
项目类别青年科学基金项目 研究期限2018 年 01 月 01 日 至
2020 年 12 月 31 日
中文主题词水合肼;载体;助催化作用机制;稀土氧化物;制氢
英文主题词hydrous hydrazine;supports;co-catalytic mechanism;rare-earth oxide;hydrogen generation

摘要

中文摘要 水合肼被视为新一代可移动氢源,其催化分解制氢技术是推动氢燃料电池技术实用化的重要途径,而高效催化剂的研制是关键环节。本项目选取稀土氧化物负载Ni基合金催化剂为研究对象,重点围绕稀土氧化物对Ni基合金催化水合肼分解制氢的助催化作用机制这一关键基础科学问题开展研究。拟采用化学合成方法制备具有不同成分和微观结构的稀土氧化物(REOs)兼作载体和助催化剂,担载化学原位还原生成的Ni或NixMy(M=Fe、Pt、Ir等)纳米粒子,构筑载体与活性组分具有强相互作用的Ni(NixMy)/REOs催化剂。结合实验和分析表征系统研究稀土氧化物对水合肼分解制氢反应的影响规律,揭示载体助剂成分、微观结构与助催化剂性能间的关联性并探索其对水合肼分解制氢的助催化作用机制,建立载体成分/结构优化设计原则。本项目预期研究成果将为高效负载型催化剂的研制提供参考或借鉴,同时丰富和发展水合肼催化分解制氢的理论基础。
英文摘要 Hydrous hydrazine has been considered as a new generation of mobile hydrogen storage medium. The catalytic decomposition of hydrous hydrazine represents a prevailing method for hydrogen fuel cell technology widespread. And the development of efficient catalysts is the key to the implementation of this technology. The present project was designed to investigate the rare-earth oxide-supported nickel-based alloy catalysts, with special focus on the fundamental research of the co-catalytic properties and mechanism of rare-earth oxide (REOs) on promoting hydrogen generation from hydrous hydrazine. In this regard, a new type of supported catalysts, i.e., Ni(NixMy)/REOs (M= Fe, Pt, Ir, et al.), with well-defined composition and microstructure, will be synthesized. To this end, composition-and-structure-controlled synthesis of nanostructured REOs nanoparticles will be conducted by using well-established synthetic approaches. Through systematically study of the effects of a set of compositional or microstructural variables on the catalytic properties individually, it is likely to unravel the composition-microstructure-catalytic properties relationship for this type of supported catalysts and furthermore, their co-catalytic mechanism on promoting hydrogen generation from hydrous hydrazine. The present project may lay key foundation for the development of high-performance supported catalysts, and contribute to the theoretical enrichment and development of on-demand hydrogen generation from hydrous hydrazine.
结题摘要

成果

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