中国科学院大连化学物理研究所的包信和院士团队基于“纳米限域催化”新概念,创造性地构建了硅化物晶格限域的单铁中心催化剂,成功地实现了甲烷在无氧条件下选择活化,一步高效生产乙烯、芳烃和氢气等高值化学品。该研究将具有高催化活性的单中心低价铁原子通过2个碳原子和1个硅原子镶嵌在氧化硅或碳化硅晶格中,形成高温稳定的催化活性中心;甲烷分子在配位不饱和的单铁中心上催化活化脱氢,获得表 Based on the new concept of “nano-confinement catalysis”, Bao Xianghe’s team of Dalian Institute of Chemical Physics, Chinese Academy of Sciences, creatively constructed a single-site iron center catalyst with silicide lattice confinement and succeeded in realizing methane under anaerobic conditions Choose to activate, one-step efficient production of ethylene, aromatics and hydrogen and other high-value chemicals. In this study, a single-site, low-valent iron atom with high catalytic activity was embedded in a silicon oxide or silicon carbide lattice by two carbon atoms and one silicon atom to form a high-temperature stable catalytic activity center. The catalytic activity of dehydrogenation on the single iron center was obtained