Hierarchical Fe,Cu/ZSM-5 was prepared by post-synthesis treatment of nanocrystallite B–ZSM-5. The hierarchical MFI zeolites containing Fe and/or Cu were characterized with XRD, FT-IR, SEM, UV–Vis and N2-sorption techniques. UV–Vis and FT-IR spectroscopy demonstrated that some of the Fe and Cu cations were incorporated into the zeolite framework. Direct amination of benzene to aniline with H2O2 and NH3 was studied using a series of Fe and/or Cu doped ZSM-5 catalysts. The effect of Fe and/or Cu incorporation into ZSM-5 catalyst and crystallite size of the catalyst on the benzene conversion, product distribution and aniline selectivity in the direct amination reaction was investigated. Nanocrystallite hierarchical Fe,Cu/ZSM-5 exhibited the best catalytic oxido-amination performance (conversion of benzene was 23.7% and selectivity for aniline was 74.1%).

中文翻译：

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苯与 NH3 和 H2O2 直接胺化在通过纳米微晶 B-ZSM-5 的后合成处理制备的多级 Fe,Cu/ZSM-5 上

通过对纳米微晶 B-ZSM-5 进行后合成处理制备多级 Fe,Cu/ZSM-5。使用 XRD、FT-IR、SEM、UV-Vis 和 N2 吸附技术对含有 Fe 和/或 Cu 的分级 MFI 沸石进行了表征。UV-Vis 和 FT-IR 光谱表明一些 Fe 和 Cu 阳离子被结合到沸石骨架中。使用一系列 Fe 和/或 Cu 掺杂的 ZSM-5 催化剂研究了用 H2O2 和 NH3 将苯直接胺化为苯胺。研究了Fe和/或Cu掺入ZSM-5催化剂和催化剂晶粒尺寸对直接胺化反应中苯转化率、产物分布和苯胺选择性的影响。纳米晶分级 Fe,Cu/ZSM-5 表现出最好的催化氧化胺化性能（苯的转化率为 23.7%，对苯胺的选择性为 74。