Angelw: new progress in Single Atom Catalysis of Dalian Institute of chemistry, Chinese Academy of Sciences

Recently, researcher Qiao Botao, academician Zhang Tao, aerospace catalysis and new materials research office, Dalian Institute of Chemical Physics, Chinese Academy of Sciences New progress has been made in the study of monoatomic catalysis It is found that monoatomic catalyst has far more activity and selectivity than nano catalyst in the selective oxidation of alcohol It is first proposed and proved that the property of maximizing the interface of monoatomic catalyst is an important reason for the excellent performance of the catalyst The research work was published in German Applied Chemistry and highly praised by the reviewers (DOI: 10.1002 / anie 201803272) In 2011, Zhang Tao research team cooperated with Professor Li Jun of Tsinghua University and Professor Liu Jingyue of University of Arizona to report the preparation and performance of monoatomic catalyst for the first time in the world, and put forward the concept of "monoatomic catalysis" on this basis, which has become a new frontier in the field of catalysis Compared with supported nano catalysts, monoatomic catalysts have many unique advantages, such as uniform active site structure, maximization of metal atom utilization efficiency, unique high activity, and communication between homogeneous and multi equal These advantages have been confirmed in previous studies In addition, the single atom catalyst maximizes the metal utilization efficiency, but also maximizes the metal interface in fact Therefore, the monoatomic catalyst has potential advantages in some metal support interface cooperative catalytic reactions, but it has not been proved so far Using oxygen as oxidant, high selective catalytic oxidation of alcohol to aldehyde is a green synthesis path with high atom economy, which has important basic research significance and practical application value Recently, Bao Xinhe, academician of Dalian Institute of chemical and physical sciences, and Li Yadong, academician of Tsinghua University worked together to study that the metal oxide interface is the active center of the reaction Single atom catalyst can maximize the metal support interface, so it is expected to show excellent performance in this reaction Based on this, the team studied the performance of ceria supported Au, Pt single atom and nano catalyst for selective oxidation of benzyl alcohol The results show that the monoatomic catalyst not only has high catalytic efficiency, but also has higher selectivity In addition, it has better substrate applicability and reaction stability Detailed mechanism studies revealed that lattice oxygen at the interface has higher reactivity and selectivity The interface maximization and the largest proportion activation of lattice oxygen in cerium dioxide are the important reasons for the higher selectivity and activity of the single atom catalyst compared with the common nano catalyst This study provides a new idea for the development of high efficiency catalysts for alcohol oxidation, and also provides inspiration for the design of other metal support interface collaborative catalysts The above research work was supported by NSFC, the strategic leading science and technology program of Chinese Academy of Sciences, and the national key R & D Program "nanotechnology" and other projects