@article{0ed268f744f045bdb81db9e6bb768a70,
title = "Encapsulation of Cu nanoparticles in nanovoids of plate-like silica sodalite through interlayer condensation of Cu2+ion-exchanged layered silicate RUB-15",
abstract = "The interlayer condensation of layered silicates is a unique method for synthesizing zeolites and is effective for the introduction of metal species into platy zeolite frameworks. Layered silicate RUB-15 is a useful starting material because metal ions can be introduced between the layers and zeolite frameworks (all-silica SOD-type zeolite; silica sodalite) can be formed through interlayer condensation. In this study, Cu ions were intercalated into layered silicate RUB-15, and metal Cu nanoparticles were formed in the nanovoids of silica sodalite by a simple heat treatment in an inert atmosphere. Both interlayer condensation and the reduction of Cu2+ ions were confirmed by in situ XRD analysis performed during the heat treatment. The residual interlayer tetramethylammonium ions played two roles: the control of stacking sequence in the interlayer condensation and the reduction of Cu2+ ions. The formed Cu nanoparticles were stable in air atmosphere because of their confinement in the nanovoids of the sodalite frameworks. This journal is",
author = "Kazuyuki Kuroda and Kazuyuki Kuroda and Masakazu Koike and Rika Sakai and Shimpei Enomoto and Takeshi Mino and Natsuhiko Sugimura and Takahiro Gotoh and Hiroaki Wada and Atsushi Shimojima and Atsushi Shimojima",
note = "Funding Information: We gratefully acknowledge Dr Y. Asakura (Tohoku University), Dr N. Sato, Dr S. Saito, Mr Y. Shimasaki, Mr T. Matsuno, Mr K. Muramatsu, Mr T. Hirohashi, and Mr Y. Murakami (Waseda University) for their fruitful discussions. We also acknowledge Dr T. Shibue, Mr M. Miyashita, Mr Y. Watabe (Material Characterization Central Laboratory, Waseda University78), Ms A. Kubota (Environmental Safety Center, Waseda University), and Mr H. Oshikawa (The University of Tokyo) for the experimental support for NMR, SEM, CHN, ICP, in situ XRD, and HAADF-STEM analyses. This work was supported by two grants of JSPS for the Joint Research Projects-LEAD with DFG and Grant-in-Aid for JSPS Fellows (No. 18J22738). The HAADF-STEM observation using a JEOL JEM-2800 microscope was supported by the Advanced Characterization Nanotechnology Platform of the University of Tokyo (“Nanotechnology Platform” of MEXT). Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",
year = "2020",
month = jun,
day = "28",
doi = "10.1039/d0dt01083a",
language = "English",
volume = "49",
pages = "8067--8074",
journal = "Dalton Transactions",
issn = "1477-9226",
publisher = "Royal Society of Chemistry",
number = "24",
}