Correlativity of the nitrogen oxide adsorption mechanism and crystal structure in hollandite-type compounds
Tóm tắt
Hollandite-type K1.88Ga1.88Sn6.12O16 and K1.58Ga1.58Ti6.42O16 powders obtained by the solid-state reaction method were examined by DRIFT spectroscopy to evaluate their NO adsorption properties. Two key findings were deduced from the refined structure information and evaluation of NO adsorption on a hollandite surface: first, the presence of oxygen in carrier gas contributed significantly to NO adsorption; second, the occupation probability and atomic coordinate of alkaline-metal at the end of the one-dimensional tunnel structure influenced the adsorption volume per unit cell.
Tài liệu tham khảo
Yoshikado, S., Ohachi, T., Taniguchi, I., Onoda, Y., Watanabe, M., Fujiki, Y.: Frequency-independent ionic conductivity of hollandite type compounds. Solid State Ion. 9(10), 1305–1309 (1983)
Yoshikado, S., Ohachi, T., Taniguchi, I., Onoda, Y., Watanabe, M., Fujiki, Y.: AC ionic conductivity of hollandite type compounds from 100 Hz to 37.0 GHz. Solid State Ion. 7(4), 335–344 (1982)
Yoshikado, S., Taniguchi, I., Watanabe, M., Onoda, Y., Fujiki, Y.: Frequency dependence of ionic conductivity in one-dimensional ionic conductors K1.6Mg0.8Ti7.2O16 and K1.6Al1.6Ti6.4O16. Solid State Ion. 79, 34–39 (1995)
Ringwood, A.E., Kesson, S.E., Ware, N.G., Hibberson, W., Major, A.: Immobilisation of high level nuclear reactor wastes in SYNROC. Nature 278, 219–223 (1979)
Mitamura, H., Matsumoto, S., Stewart, M.W.A., Tsuboi, T., Hashimoto, M., Vance, E.R., Hart, K.P., Togashi, Y., Kanazawa, H., Ball, C.J., White, T.J.: α-decay damage effects in curium-doped titanate ceramic containing sodium-free high-level nuclear waste. J. Am. Ceram. Soc. 77(9), 2255–2264 (1994)
Watanabe, M., Mori, T., Yamauchi, S., Yamamura, H.: Catalytic property of the hollandite-type 1-D ion-conductors: selective reduction of NO x . Solid State Ion. 79, 376–381 (1995)
Mori, T., Yamauchi, S., Yamamura, H., Watanabe, M.: New hollandite catalysts for selective reduction of nitrogen monoxide with propene. Appl. Cat. A Gen. 129, L1–L7 (1995)
Fujimoto, K., Ito, S., Watanabe, M.: Crystal growth and refinement of K1.88Ga1.88Sn6.12O16 hollandite-type compound. Solid State Ion. 177, 1901–1904 (2006)
Fujimoto, K.: Private communication (in preparation)
Fujimoto, K., Takamori, K., Yamaguchi, K., Ito, S.: Single crystal growth and structure refinement of hollandite-type K1.98Fe1.98Sn6.02O16 (To be submitted)
Fujimoto, K., Yamakawa, C., Ito, S.: Crystal growth and structure refinement of hollandite-type K1.59Ga1.59Ti6.41O16. Solid State Ion. 184, 74–77 (2011)
Michiue, Y.: Superstructure of hollandite K x Mg(8+x)/3Sb(16−x)/3O16 (x ≈ 1.76). J. Solid State Chem. 180(6), 1840–1845 (2007)
Spectral Database for Organic Compounds:http://sdbs.riodb.aist.go.jp/sdbs/cgi-bin/direct_frame_disp.cgi?sdbsno=40130
Fujimoto, K., Suzuki, J., Harada, M., Awatsu, S., Mori, T., Watanabe, M.: Preparation of hollandite-type K x Ga x Sn8-xO16 thin film and NO adsorption behavior. Solid State Ion. 152–153, 769–775 (2002)