2024年3月1日 · The results showed that the Al2O3 formed by oxidation of Fe(NO 3) 3 precursor formed a good grain stacking structure with Fe nanoparticles in the catalyst during the high temperature treatment. This helps the nanoparticles to resist Ostwald ripening or coalescence during the structural transformation process.

1995年1月2日 · A giant magnetoresistance ratio of 30% at 4.2 K and 18% at 300 K was observed for the first time in an Fe/Al 2 O 3 /Fe junction. The conductance at room temperature was expressed well by G=96.2 (1 + 0.09 cos θ)(Ω-1), where θ is the angle between the magnetizations of two iron electrodes.The dependence of the magnetoresistance ratio, saturated resistance and also the tunneling current on ...

2007年10月1日 · The results showed that the catalyst incorporated with Al 2 O 3 exhibits a strong Fe–Al 2 O 3 interaction, which obviously weakens the surface basicity, stabilizes the FeO phase and inhibits the reduction of iron catalyst in H 2 or syngas. Furthermore, Fe–Al 2 O 3 interaction also restrains the carburization of iron catalyst in CO or syngas.

合成法与镀层化学转化法制备FeAlAl2O3涂层 5.1合成法制备FeAlAl2O3涂层 5.1.1涂层微观结构与成分 5.1.2合成机理分析 5.2镀层化学转化法制备FeAlAl2O3涂层 5.2.1涂层形成机制 5.2.2涂层微观结构与组成 参考文献 FeAlAl2O3涂层制备过程中的热机械行为 6.1涂层中热应力的产生机理

Fe/Al2O3催化剂的催化性能 由表1 中数据可知，不同Al 2O 3 载体的催化剂反应活性相差较大。三种载体制备催化剂样品的反应 活性高低顺序为：Al 2O 3-I < Al 2O 3-II < Al 2O 3-III。Fe/Al 2O 3-I 催化剂的反应活性很低，CO 转化率只有4.66%。 Fe/Al 2O

2020年7月10日 · Pure aluminum oxide (Al2O3) and iron-doped alumina Fe-doped Al2O3 with different percentages of Fe dopant nanoparticles (NPs) were synthesized by co-precipitation method. The XRD analysis indicated that the samples have γ, δ, θ, and α phases and the crystal structure became more stable with increasing Fe dopant. The results of the TEM analysis indicated that the particle size of the 4% ...

在这项工作中，为了合成碳纳米管阵列，开发了一种一步热处理的铝箔基底负载Fe(NO 3 ) 3溶液的“自反应工艺”来制备直径为100微米的Fe@Al 2 O 3纳米颗粒。约20 nm，催化剂层厚度约2-3 mm。结果表明，维持小纳米颗粒状态的关键是金属与金属氧化物之间的界面相互作用，使Fe纳米颗粒锚定在Al 2 O 3表面 ...

2020年5月12日 · In this work, we investigate the optimal loading of Cs as a promoter for Fe/Al 2 O 3 catalysts prepared through a simple co-impregnation technique. Through catalytic NH 3 decomposition testing an optimal Cs:Fe ratio of ca. 1 was observed, above which the decomposition rate is significantly supressed.

2016年5月9日 · Abstract The presence of a Fe–FeAl2O4 structure over an Fe–Al2O3 catalysts is demonstrated to be vital for the catalytic methane decomposition (CMD) activity. After H2 reduction at 750 °C, Fe–Al2O3...

2024年2月1日 · The latest research results of Fe/Al 2 O 3 interface optimization measures and strengthening mechanisms are listed, and a summary of how alloying elements affect the ability of Fe/Al2O3 interface bonding is provided. The study of strengthening mechanisms can lead to better design of interfaces for new materials and thus improve material properties.