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Surface molecular imprinting over supported metal catalysts for size-dependent selective hydrogenation reactions
Nature Catalysis ( IF 37.8 ) Pub Date : 2021-07-15 , DOI: 10.1038/s41929-021-00649-3
Dan Wu 1, 2 , Willinton Y. Hernández 1 , Wenjuan Zhou 1 , Bang Gu 2 , Andrei Y. Khodakov 2 , Vitaly V. Ordomsky 2 , Walid Baaziz 3 , Ovidiu Ersen 3 , Maya Marinova 4 , Ahmed Addad 4 , Nicolas Nuns 4 , Evgeny I. Vovk 5 , Olga V. Safonova 6
Affiliation  

Molecular imprinting of polymer matrices enables the creation of template-shaped cavities with high affinity for molecules of given shape and size. Here we introduce a surface molecular imprinting strategy to control the hydrogenation selectivity of various aromatic molecules over a supported palladium catalyst. This strategy involves the sequential adsorption over the metal surface of an aromatic template molecule followed by poisoners, resulting in the formation of non-poisoned active islands of predetermined shape and size. Because of steric constraints, these active islands exhibit high selectivity in the chemical conversion of aromatic molecules that correspond in size and shape to the templates. The elaborated strategy enables a practical application relevant to selective hydrogenation and removal of carcinogenic benzene from mixtures of aromatics.



中文翻译:

负载型金属催化剂上的表面分子印迹用于尺寸依赖性选择性加氢反应

聚合物基质的分子印迹能够产生对给定形状和大小的分子具有高亲和力的模板形空腔。在这里,我们介绍了一种表面分子印迹策略来控制各种芳烃分子在负载钯催化剂上的氢化选择性。该策略涉及在芳族模板分子的金属表面上顺序吸附,然后是毒物,导致形成预定形状和大小的非毒化活性岛。由于空间限制,这些活性岛在尺寸和形状与模板相对应的芳香分子的化学转化中表现出高选择性。

更新日期:2021-07-15
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