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Science 18 April 2003:
Vol. 300. no. 5618, pp. 470 - 472
DOI: 10.1126/science.1081019
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Reports

Organic-Inorganic Hybrid Zeolites Containing Organic Frameworks

Katsutoshi Yamamoto,1* Yasuyuki Sakata,2 Yuki Nohara,3 Yoko Takahashi,3 Takashi Tatsumi3{dagger}

Organic-inorganic hybrid zeolite materials containing an organic framework have been synthesized by partially superseding a lattice oxygen atom by a methylene group. The use of methylene-bridged organosilane as a silicon source gives zeolite materials containing an organic group as lattice (ZOL), with several zeolitic phases such as the MFI and the LTA structures. Through various characterization methods, the presence of methylene frameworks (Si-CH2-Si) that replace siloxane bonds (Si-O-Si) has been verified, although the Si-C bonds are partly cleaved to give rise to terminal methyl groups. The shape-selective lipophilicity of a ZOL material indicates that it is not a physical mixture of conventional zeolite and amorphous organic-containing material but contains a genuine organic-inorganic hybrid zeolite.

1 Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113–8656, Japan.
2 Yokohama Laboratory, CACs, Inc., 1000 Kamoshida-cho, Aoba-ku, Yokohama 227–0033, Japan.
3 Division of Materials Science and Chemical Engineering, Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240–8501, Japan.



* Current address: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980–8577, Japan.

{dagger} To whom correspondence should be addressed. E-mail: ttatsumi{at}ynu.ac.jp

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Periodic Mesoporous Organosilicas Containing Interconnected [Si(CH2)]3 Rings.
K. Landskron, B. D. Hatton, D. D. Perovic, and G. A. Ozin (2003)
Science 302, 266-269
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Science. ISSN 0036-8075 (print), 1095-9203 (online)