In this work, structured Ni–B amorphous alloy catalysts on Ni foam (termed as Ni–B/Ni foam catalysts) were proposed for nitrobenzene catalytic hydrogenation by a facile and effective electroless plating technique. Non-noble Ni–B catalysts could effectively reduce the cost of reactors for large-scale industrial application. Moreover, benefitting from the abundant interconnected pore structure of Ni foam, strong perturbation and good mixing could be induced in microreactors for enhancing mass transport. The experimental results indicated that the developed catalysts showed good catalytic activity and durability during 30 h operation. The effect of the B–Ni molar ratio on catalytic performance was also investigated. It was shown that as the B–Ni molar ratio increased from 0.5 to 2, the nitrobenzene conversion increased from 16% to 95.8%, and then decreased to 68% when the B–Ni molar ratio further increased to 4. The best performance was achieved with a B–Ni molar ratio of 2 in the present work. The nitrobenzene conversion and aniline selectivity could reach 95.8% and 93.8%, respectively.

中文翻译：

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用于气液固微反应器的泡沫镍上的结构化NiB非晶态合金催化剂

在这项工作中，提出了一种通过便捷有效的化学镀技术在Ni泡沫上构造的Ni-B非晶态合金催化剂（称为Ni-B / Ni泡沫催化剂）用于硝基苯催化加氢。非贵金属Ni-B催化剂可有效降低大规模工业应用反应器的成本。而且，得益于镍泡沫的丰富的相互连接的孔结构，可以在微反应器中引起强烈的扰动和良好的混合，从而增强质量传递。实验结果表明，所开发的催化剂在30 h的操作过程中表现出良好的催化活性和耐久性。还研究了B-Ni摩尔比对催化性能的影响。结果表明，随着B-Ni摩尔比从0.5增加到2，硝基苯转化率从16％增加到95.8％，然后，当B-Ni摩尔比进一步增加到4时，降低到68％。在当前工作中，B-Ni摩尔比为2可获得最佳性能。硝基苯的转化率和苯胺的选择性分别达到95.8％和93.8％。