二次元ナノ構造をもつゼオライトの合成と触媒応用

2018 Fiscal Year Annual Research Report

• Project/Area Number: 17F17083
• Research Institution: The University of Tokyo
• Principal Investigator: 大久保 達也 東京大学, 大学院工学系研究科(工学部), 教授 (40203731)
• Co-Investigator(Kenkyū-buntansha): XU LE 東京大学, 工学(系)研究科(研究院), 外国人特別研究員
• Project Period (FY): 2017-04-26 – 2019-03-31
• Keywords: layered zeolite

Outline of Annual Research Achievements

First, the control of the zeolitic layer stacking with different crystal symmetry elements was focused in this research. Under controlled conditions, the “dimer” and “monomer” organics of 1-ethyl-3-methylimidazolium selectively direct different, but related, germanosilicates, the ECNU-16 with a new topology and the existing IM-16 with the UOS topology, respectively. The comprehensive computational study based on the molecular mechanic simulations revealed that the zeolite phase selectivity was determined by the unique space-filling behavior of the “dimer” and “monomer” organics, which was closely correlated with their rotation freedom, as well as the included volume of host zeolite channels.
On the other hand, a Ge-recycling strategy that realized the topotatic transformation between different lamellar zeolitic precursors (fer-type and pcr-type) through three-dimensional (3D) germanosilicate UTL was discovered in this research. The discovery of this Ge-recycling process enabled to switch the lamellar zeolitic precursor from one structure to the other, both of which could be further derived of diverse zeolites. This study established new relationships not only between structurally distinct lamellar zeolites but also two families of zeolitic materials.

Research Progress Status

平成30年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

平成30年度が最終年度であるため、記入しない。

Research Products

• [Journal Article] Crystallization of a Novel Germanosilicate ECNU‐16 Provides Insights into the Space‐Filling Effect on Zeolite Crystal Symmetry (2018)
  • Author(s): L. Xu, L. Zhang, J. Li, K. Muraoka, F. Peng, H. Xu, C. Lin, Z. Gao, J. Jiang, W. Chaikittsilp, J. Sun, T. Okubo, P. Wu
  • Journal Title: Chemistry-A European Journal Volume: 24 Pages: 9247-9253
  • DOI: 10.1002/chem.201802087
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Crystallization of a Novel Germanosilicate ECNU-16 Provides Insights into the Space-Filling Effect on Zeolite Crystal Symmetry (2018)
  • Author(s): L. Xu, L. Zhang, J. Li, K. Muraoka, F. Peng, H. Xu, C. Lin, Z. Gao, J. Jiang, W. Chaikittsilp, J. Sun, T. Okubo, P. Wu
  • Organizer: ZMPC2018, Yokohama, Japan
  • Int'l Joint Research
• [Presentation] Crystallization of a Novel Germanosilicate ECNU-16 Provides Insights into the Space-Filling Effect on Zeolite Crystal Symmetry (2018)
  • Author(s): L. Xu, L. Zhang, J. Li, K. Muraoka, F. Peng, H. Xu, C. Lin, Z. Gao, J. Jiang, W. Chaikittsilp, J. Sun, T. Okubo, P. Wu
  • Organizer: 2018 Japanese Zeolite Conference, Hakodate, Japan
• [Presentation] Crystallization of a Novel Germanosilicate ECNU-16 Provides Insights into the Space-Filling Effect on Zeolite Crystal Symmetry (2018)
  • Author(s): L. Xu, L. Zhang, J. Li, K. Muraoka, F. Peng, H. Xu, C. Lin, Z. Gao, J. Jiang, W. Chaikittsilp, J. Sun, T. Okubo, P. Wu
  • Organizer: 4th Euro-Asia Zeolite Conference, Taormina, Italy
  • Int'l Joint Research