Abstract Continuous flow chemistry has been considered as a green technology for modern catalytic industry as it not only improves the manufacture efficiency but also facilitates the sustainability. Herein we report a facile method for synthesizing bimetallic Pd-Fe alloy nanoparticles catalysts anchored on N doped carbon (NC) functionalized fibrous aluminium silicate fibers (ASFs). The as-prepared ASF@NC/PdFe catalytic fibers are packed into a column to construct a fixed-bed system, which exhibits excellent treatment capacity and durability for continuous catalytic hydrogenation of organic dyes. Typically, the flow rate of the fixed-bed is high up to 200 mL/min for 4-nitrophenol and methylene blue reduction, which is one of the most efficient fixed-bed catalytic systems. The catalytic turnover frequency is calculated to be as high as 59.6 min-1 due to the enhanced synergetic effect of Pd and Fe. Furthermore, only slight loss of activity for the fixed-bed is observed even after nine successive catalytic cycles.

中文翻译：

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固定床系统中有机染料在 Pd-Fe 合金基纤维催化剂上的连续流动还原

摘要 连续流动化学被认为是现代催化工业的一种绿色技术，它不仅提高了生产效率，而且有利于可持续性。在此，我们报告了一种合成双金属 Pd-Fe 合金纳米粒子催化剂的简便方法，该催化剂锚定在掺氮碳 (NC) 功能化的硅酸铝纤维 (ASFs) 上。将制备的 ASF@NC/PdFe 催化纤维装入柱中构建固定床系统，该系统对有机染料的连续催化加氢表现出优异的处理能力和耐久性。通常，固定床的流速高达 200 mL/min，用于 4-硝基苯酚和亚甲蓝还原，这是最有效的固定床催化系统之一。经计算，催化周转频率高达 59。6 min-1 由于 Pd 和 Fe 的协同效应增强。此外，即使在连续九次催化循环后，也仅观察到固定床的活性有轻微损失。