Encapsulation of Cu nanoparticles in nanovoids of plate-like silica sodalite through interlayer condensation of Cu2+ion-exchanged layered silicate RUB-15

Kazuyuki Kuroda, Kazuyuki Kuroda, Masakazu Koike, Rika Sakai, Shimpei Enomoto, Takeshi Mino, Natsuhiko Sugimura, Takahiro Gotoh, Hiroaki Wada, Atsushi Shimojima, Atsushi Shimojima

Research output: Contribution to journalArticlepeer-review

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

Original languageEnglish
Pages (from-to)8067-8074
Number of pages8
JournalDalton Transactions
Volume49
Issue number24
DOIs
Publication statusPublished - 2020 Jun 28

ASJC Scopus subject areas

  • Inorganic Chemistry

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