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首页> 外文期刊>ACS catalysis >Cerium-Oxide-Modified Nickel as a Non-Noble Metal Catalyst for Selective Decomposition of Hydrous Hydrazine to Hydrogen
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Cerium-Oxide-Modified Nickel as a Non-Noble Metal Catalyst for Selective Decomposition of Hydrous Hydrazine to Hydrogen

机译：氧化铈修饰的镍作为非贵金属催化剂将水合肼选择性分解为氢

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摘要

Hydrous hydrazine is identified as a hydrogen reservoir owing to its high content of hydrogen (8.0 wt %). Its selective decomposition under mild conditions is the key for quick H-2 release. Modifying Ni nanoparticles with a small amount of CeO2 (8.0 mol %) resulted in a 3-fold increase of turnover frequency (TOF) and an enhancement of H-2 selectivity from 67% to above 99%. This improvement was due to the modification of Ni with CeO2 nearby through strong metal-support interaction (e.g., Ni-O-Ce structure). Furthermore, this promoting effect was extended to other oxides which can form strong metal-support interaction with Ni, such as ZrO2, MgO, and La2O3.
机译：含水肼由于其氢含量高（8.0重量％）而被确定为储氢剂。其在温和条件下的选择性分解是H-2快速释放的关键。用少量的CeO2（8.0 mol％）修饰Ni纳米颗粒导致转换频率（TOF）增长3倍，H-2选择性从67％提高到99％以上。这种改善归因于通过强金属-载体相互作用（例如Ni-O-Ce结构）在附近用CeO2修饰了Ni。此外，这种促进作用扩展到了可以与Ni形成强金属-载体相互作用的其他氧化物，例如ZrO2，MgO和La2O3。

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