Ultralow Loading Ruthenium on Alumina Monoliths for Facile, Highly Recyclable Reduction of p-Nitrophenol
Ultralow Loading Ruthenium on Alumina Monoliths for Facile, Highly Recyclable Reduction of p-Nitrophenol
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氧化铝整料上的超低载量钌可轻松、高度可回收地还原对硝基苯酚
DOI：
10.3390/catal11020165
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发表时间：
2021-01
期刊：
影响因子：
3.9
通讯作者：
Lorianne Shultz;Corbin Feit;Jordan Stanberry;Zhengning Gao;S. Xie;V. Anagnostopoulos;Fudong Liu
中科院分区：
文献类型：
--
作者：
Lorianne Shultz;Corbin Feit;Jordan Stanberry;Zhengning Gao;S. Xie;V. Anagnostopoulos;Fudong Liu
有毒硝基芳烃在工业过程中的广泛使用及其在工业废水中的普遍存在促使了修复策略的发展，其中之一是将其催化还原为毒性较小且可合成的苯胺衍生物。虽然这一研究领域有着丰富的历史，有无数的活性催化剂的例子，但大多数系统依赖于昂贵的贵金属，并且是亚微米甚至几纳米大小的胶体颗粒。这种系统提供了宝贵的学术见解，但不适合实际应用。在此，我们报告了基于在2-4 mm直径的球形氧化铝整料上超低负载的半贵金属钌的催化剂的制造。钌负载通过原子层沉积（ALD）实现，并且使用普遍存在的对硝基苯酚NaBH 4水溶液还原方案对催化活性进行基准测试。可回收性测试表明，催化剂系统非常坚固，易于处理。
The pervasive use of toxic nitroaromatics in industrial processes and their prevalence in industrial effluent has motivated the development of remediation strategies, among which is their catalytic reduction to the less toxic and synthetically useful aniline derivatives. While this area of research has a rich history with innumerable examples of active catalysts, the majority of systems rely on expensive precious metals and are submicron- or even a few-nanometer-sized colloidal particles. Such systems provide invaluable academic insight but are unsuitable for practical application. Herein, we report the fabrication of catalysts based on ultralow loading of the semiprecious metal ruthenium on 2–4 mm diameter spherical alumina monoliths. Ruthenium loading is achieved by atomic layer deposition (ALD) and catalytic activity is benchmarked using the ubiquitous para-nitrophenol, NaBH4 aqueous reduction protocol. Recyclability testing points to a very robust catalyst system with intrinsic ease of handling.