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Important Progress in Cluster Chemistry Made by School of Chemistry, BIT

release date :2019-08-13 02:38:00? | ? [ close window ]ViewCount:次

    Translator:? Chen Zhehui, News Agency of BIT

    Editor: News Agency of BIT

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  365足球体育appThe catalysts are widely applied in chemical engineering and technology. More than 80% of the industrial products are prepared with the catalysts. However, it’s quite difficult to obtain the structure-activity relationship of the active sites in the catalysts by current tools because of their complicated surface structures and many other impacts. By using cluster model, the reactivity can be measured at atomic weight resolution ratio level. With the strong support of National Natural Science Foundation of China, Beijing Natural Science Foudatiion, Key Laboratory of Cluster Science of Beijing Institute of Technology (BIT) and professor Zhang Yunhong, Doctor Ma Jiabi, a young teacher from School of Chemistry, BIT,?made innovative progress in cluster chemistry in cooperation with He Shenggui, researcher from Institute of Chemistry of Chinese Academy of Science.

Figure 1: The activated orbit of HNbN? and Pt

  Transition metal nitrides are?considered as the cheap materials which is expected to replace the noble metal. By using the high-resolution mass-spectrometric technique and the photoelectron imaging spectrometry, the researchers succeeded in synthesizing HNbn- with reactive activity similar with a Pt Atom. The achievement was published in Angew. Chem. Int. Ed (2016, DOI: 10.1002/anie.201511507). New insights into how to replace noble metals with transition metal nitrides may be derived from the experimental study. Angew. Chem. Int. Ed is one of the most influential comprehensive academic periodicals in Chemistry with an impact factor of 11.261.

Figure 2: The study on the methane activation of Cerium-Vanadium bimetallic oxide cluster cations

  Besides, Ma’s team also made a series of progress in the research of transition metal oxides. The research of Nano-sized cluster cations becomes more and more attractive in the field of gaseous clusters. The methane activation of cluster ions decrease?rapidly as their sizes increase. For example, the reaction rate of (V2O5)10+ and CH4 is slower than the reaction with (V2O5)2+ by two orders of magnitude. Researchers found that (CeO2)m(V2O5)n+ Clusters (m=1,2, n=1-5; m=3, n=1-4) could abstract on hydrogen atom from CH4; size-dependent reactivities could be rationalized by considering the different active species and mechanisms. The achievement was published in ChemPhysChem (2016, DOI: 10.1002/cphc.201501126), on the front cover with a cover profile. It provides new ideas for understanding the relative mechanism of catalytic reaction.?

  Doctor Ma Jiabi has been a teacher in School of Chemistry, BIT since 2013. As the first author or the corresponding author, he has published 15 papers in the SCI journals, 1 paper in the JACS journals, 3 papers in Angew. Chem Int. Ed., including 2 cover articles.