TY - JOUR
T1 - Interlayer Silylation of Layered Octosilicate with Organoalkoxysilanes
T2 - Effects of Tetrabutylammonium Fluoride as a Catalyst and the Functional Groups of Silanes
AU - Yatomi, Masashi
AU - Koike, Masakazu
AU - Rey, Nadège
AU - Murakami, Yuki
AU - Saito, Shohei
AU - Wada, Hiroaki
AU - Shimojima, Atsushi
AU - Portehault, David
AU - Carenco, Sophie
AU - Sanchez, Clément
AU - Carcel, Carole
AU - Wong Chi Man, Michel
AU - Kuroda, Kazuyuki
N1 - Funding Information:
We gratefully acknowledge Dr. M. Yoshikawa, Dr. N. Sato, Mr. Y. Shimasaki, Dr. T. Matsuno, Dr. K. Muramatsu, Mr. T. Hirohashi, Ms. R. Sakai, Mr. R. Suganami, Mr. Y. Oka, and Ms. A. Komatsu (Waseda University) for their assistance with sample preparation and fruitful discussions. We acknowledge Mr. S. Enomoto (Kagami Memorial Research Institute for Materials Science and Technology, Waseda University), Dr. T. Shibue, Dr. N. Sugimura, Mr. Y. Watabe (Material Characterization Central Laboratory, Waseda University ), and Ms. A. Kubota (Environmental Safety Center, Waseda University) for the XPS, NMR, and ICP analyses. Funding from the ANR (project ANR‐15‐JTIC‐0003‐01) to support the PhD scholarship of Dr. N. Rey is also gratefully acknowledged. This work was supported by grants Grant‐in‐Aid for Strategic International Collaborative Research Program (SICORP), the “France–Japan Joint Call On MOLECULAR TECHNOLOGY” from the ANR (Agence Nationale de la Recherche) and JST (Japan Science and Technology Agency) for the MODULE‐CAT project (ANR‐15‐JTIC‐0003‐01) and JSPS for the Joint Research Projects‐LEAD with DFG. M. K. is grateful for financial support via a Grant‐in‐Aid for JSPS Research Fellows from MEXT (No. 18J22738). [50]
Funding Information:
We gratefully acknowledge Dr. M. Yoshikawa, Dr. N. Sato, Mr. Y. Shimasaki, Dr. T. Matsuno, Dr. K. Muramatsu, Mr. T. Hirohashi, Ms. R. Sakai, Mr. R. Suganami, Mr. Y. Oka, and Ms. A. Komatsu (Waseda University) for their assistance with sample preparation and fruitful discussions. We acknowledge Mr. S. Enomoto (Kagami Memorial Research Institute for Materials Science and Technology, Waseda University), Dr. T. Shibue, Dr. N. Sugimura, Mr. Y. Watabe (Material Characterization Central Laboratory, Waseda University[50]), and Ms. A. Kubota (Environmental Safety Center, Waseda University) for the XPS, NMR, and ICP analyses. Funding from the ANR (project ANR-15-JTIC-0003-01) to support the PhD scholarship of Dr. N. Rey is also gratefully acknowledged. This work was supported by grants Grant-in-Aid for Strategic International Collaborative Research Program (SICORP), the ?France?Japan Joint Call On MOLECULAR TECHNOLOGY? from the ANR (Agence Nationale de la Recherche) and JST (Japan Science and Technology Agency) for the MODULE-CAT project (ANR-15-JTIC-0003-01) and JSPS for the Joint Research Projects-LEAD with DFG. M. K. is grateful for financial support via a Grant-in-Aid for JSPS Research Fellows from MEXT (No. 18J22738).
Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/5/20
Y1 - 2021/5/20
N2 - Interlayer silylation of layered sodium octosilicate (Na-Oct) with various organoalkoxysilanes was conducted using hexadecyltrimethylammonium ion-exchanged layered octosilicate (C16TMA-Oct) as an intermediate in the presence or absence of tetrabutylammonium fluoride (TBAF). The degree of silylation was increased by adding TBAF. It is suggested that F− ions perform a nucleophilic attack on the alkoxysilanes, which promotes the silylation reaction. C16TMA-Oct was silylated with octyltriethoxysilane (C8TES) or 3-mercaptopropyltriethoxysilane (MPTES) to compare the reactivity of the two organoalkoxysilanes in the presence or absence of TBAF. A higher degree of silylation of C16TMA-Oct was observed with MPTES, suggesting the higher accessibility of this silylating agent into the interlayer polar region of C16TMA-Oct. Overall TBAF appears as a relevant catalyst for the covalent interlayer surface modification of layered silicates with organic functional groups.
AB - Interlayer silylation of layered sodium octosilicate (Na-Oct) with various organoalkoxysilanes was conducted using hexadecyltrimethylammonium ion-exchanged layered octosilicate (C16TMA-Oct) as an intermediate in the presence or absence of tetrabutylammonium fluoride (TBAF). The degree of silylation was increased by adding TBAF. It is suggested that F− ions perform a nucleophilic attack on the alkoxysilanes, which promotes the silylation reaction. C16TMA-Oct was silylated with octyltriethoxysilane (C8TES) or 3-mercaptopropyltriethoxysilane (MPTES) to compare the reactivity of the two organoalkoxysilanes in the presence or absence of TBAF. A higher degree of silylation of C16TMA-Oct was observed with MPTES, suggesting the higher accessibility of this silylating agent into the interlayer polar region of C16TMA-Oct. Overall TBAF appears as a relevant catalyst for the covalent interlayer surface modification of layered silicates with organic functional groups.
KW - Layered compounds
KW - Mesoporous materials
KW - Organotriethoxysilane
KW - Silylation
KW - Tetrabutylammonium fluoride (TBAF)
UR - http://www.scopus.com/inward/record.url?scp=85105338638&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85105338638&partnerID=8YFLogxK
U2 - 10.1002/ejic.202100050
DO - 10.1002/ejic.202100050
M3 - Article
AN - SCOPUS:85105338638
SN - 0365-9496
VL - 2021
SP - 1836
EP - 1845
JO - Berichte der deutschen chemischen Gesellschaft
JF - Berichte der deutschen chemischen Gesellschaft
IS - 19
ER -