English
往期目录
新闻公告
More
化学进展 2022, Vol. 34 Issue (5): 1013-1014 DOI: 10.7536/PC220508 前一篇   后一篇

所属专题： 中国化学印记

• 中国化学印记 •

沸石整体结构的刚性与局部孔道的柔性

肖丰收*()   

  1. 浙江大学化学与生物工程学院 杭州 310028
  • 出版日期:2022-05-24 发布日期:2022-06-24
  • 通讯作者: 肖丰收
Richhtml ( 39 ) 下载PDF ( 513 ) 引用
导出

Rigidity of Zeolite Framework and Flexibility of Subcell Nanopores

Feng-Shou Xiao()   

  1. College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310028, China
  • Online:2022-05-24 Published:2022-06-24
  • Contact: Feng-Shou Xiao

Using in situ electron microscopy, it was directly observed that subcell flexibility of the zeolite framework occurred when benzene as a guest molecule was adsorbed into the straight channels of ZSM-5 zeolite nanosheets, where the opening pores stretched along the longest direction of confined benzene molecules with a maximum aspect change of 15%. This flexibility originates mainly from the topologically soft silicon-oxygen-silicon hinges between rigid tetrahedral SiO4 units, which is very important for understanding molecular adsorption and shape selective catalysis.

()
[1]
Breck D W. Zeolite Molecular Sieves: Structure, Chemistry, and Use. Wiley, 1973.
[2]
Xu R, Pang W, Yu J, Huo Q, Chen J. Chemistry of Zeolites and Related Porous Materials: Synthesis and Structure. Wiley, 2007.
[3]
Derouane D G, Gabelica Z. J. Catal., 1980, 65: 486.

doi: 10.1016/0021-9517(80)90328-0     URL    
[4]
Lai Z P, Bonilla G, Diaz I, Nery J G, Sujaoti K, Amat M A, Kokkoli E, Terasaki O, Thompson R W, Tsapatsis M, Vlachos D G. Science, 2003, 300: 456.

doi: 10.1126/science.1082169     URL    
[5]
Bereciartua P J, Cantin A, Corma A, Jorda J L, Palomino M, Rey F, Valencia S, Corcoran E W, Kortunov P, Ravikovitch P I, Burton A, Yoon C, Wang Y, Paur C, Guzman J, Bishop A R, Casty G L. Science, 2017, 358: 1068.

doi: 10.1126/science.aao0092     pmid: 29170235
[6]
Xiong H, Liu Z, Chen X, Wang H, Qian W, Zhang C, Zheng A, Wei F. Science, 2022, 376: 491.

doi: 10.1126/science.abn7667     pmid: 35482872
[7]
Liu Y, Zhou X Z, Pang X M, Jin Y Y, Meng X J, Zheng X M, Gao X H, Xiao F S. ChemCatChem, 2013, 5: 1517.

doi: 10.1002/cctc.201200691     URL    
No related articles found!