Electric Fields on FSM-16 Surface |
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| Authors: | Ken-Ichi Honma Tatsuya Yamazaki Hiromichi Yoshida Sentaro Ozawa |
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| Institution: | (1) Department of Molecular Chemistry and Engineering, Faculty of Engineering, Tohoku University, Aoba-Aramaki, Aoba-ku, Sendai, 980-8579 |
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| Abstract: | The surface of mesoporous silicate, FSM-16, was investigated by infrared spectroscopy (IR) using methane and carbon monoxide as molecular probe. The appearance of  1-peak of adsorbed CH4 indicated the presence of electric field (1.4 × 105 esu) which is attributed to a weakly polarized free silanol site (site-1). The site was located at the void of oxygen framework in FSM-16 pore wall. In addition, the presence of site-2 without any electric field was found by IR spectra of adsorbed CO. The latter site was assigned to a interacted silanol groups and/or a Si–O–Si site. |
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