Jabłońska Magdalena, Mollá Robles Alejandro
Institute of Chemical Technology, Universität Leipzig, Linnéstr. 3, 04103 Leipzig, Germany.
Materials (Basel). 2022 Jul 7;15(14):4770. doi: 10.3390/ma15144770.
The selective catalytic oxidation of NH (NH-SCO) into N and HO is an efficient technology for NH abatement in diesel vehicles. However, the catalysts dedicated to NH-SCO are still under development. One of the groups of such catalysts constituted transition metal-based catalysts, including hydrotalcite-derived mixed metal oxides. This class of materials is characterized by tailored composition, homogenously dispersed mixed metal oxides, exhibiting high specific surface area and thermal stability. Thus, firstly, we give a short introduction to the structure and composition of hydrotalcite-like materials and their applications in NH-SCO. Secondly, an overview of other transition metal-based catalysts reported in the literature is given, following a comparison of both groups. The challenges in NH-SCO applications are provided, while the reaction mechanisms are discussed for particular systems.
将氨选择性催化氧化（NH-SCO）为氮气和水是一种用于减少柴油车辆中氨排放的有效技术。然而，专门用于NH-SCO的催化剂仍在研发中。这类催化剂中的一组是过渡金属基催化剂，包括水滑石衍生的混合金属氧化物。这类材料的特点是组成可定制、混合金属氧化物均匀分散、具有高比表面积和热稳定性。因此，首先，我们简要介绍类水滑石材料的结构和组成及其在NH-SCO中的应用。其次，在对两组催化剂进行比较之后，概述文献中报道的其他过渡金属基催化剂。文中还介绍了NH-SCO应用中的挑战，同时讨论了特定体系的反应机理。
