Changes in Ti coordination number during pyrolysis of a SiO2-TiO2 gel

H. Morikawa; T. Osuka; F. Marumo; A. Yasumori; M. Yamane; M. Momura

doi:10.1016/0022-3093(86)90116-X

Changes in Ti coordination number during pyrolysis of a SiO₂-TiO₂ gel

H. Morikawa, T. Osuka, F. Marumo, A. Yasumori, M. Yamane, M. Momura

Department of Materials Science and Technology

Research output: Contribution to journal › Article › peer-review

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Abstract

A SiO₂-TiO₂ gel containing 10 mol.% TiO₂ was prepared with the mixed solution of Si(OC₂H₅)₄ and Ti[O(CH₂)₃CH₃]₄. The Ti-EXAFS (Extended X-ray Absorption Fine Structure) above its K-adsorption edge was measured for the gel treated at elevated temperatures up to 800°C. The estimated TiO distance indicated that Ti⁴⁺ ions were initially introduced into four-coordinated sites in the gel structure and then, the TiO distance betwme longer by the further pyrolysis above 400°C.

Original language	English
Pages (from-to)	97-102
Number of pages	6
Journal	Journal of Non-Crystalline Solids
Volume	82
Issue number	1-3
DOIs	https://doi.org/10.1016/0022-3093(86)90116-X
Publication status	Published - 1 Jun 1986

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title = "Changes in Ti coordination number during pyrolysis of a SiO2-TiO2 gel",

abstract = "A SiO2-TiO2 gel containing 10 mol.% TiO2 was prepared with the mixed solution of Si(OC2H5)4 and Ti[O(CH2)3CH3]4. The Ti-EXAFS (Extended X-ray Absorption Fine Structure) above its K-adsorption edge was measured for the gel treated at elevated temperatures up to 800°C. The estimated TiO distance indicated that Ti4+ ions were initially introduced into four-coordinated sites in the gel structure and then, the TiO distance betwme longer by the further pyrolysis above 400°C.",

author = "H. Morikawa and T. Osuka and F. Marumo and A. Yasumori and M. Yamane and M. Momura",

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T1 - Changes in Ti coordination number during pyrolysis of a SiO2-TiO2 gel

AU - Morikawa, H.

AU - Osuka, T.

AU - Marumo, F.

AU - Yasumori, A.

AU - Yamane, M.

AU - Momura, M.

PY - 1986/6/1

Y1 - 1986/6/1

N2 - A SiO2-TiO2 gel containing 10 mol.% TiO2 was prepared with the mixed solution of Si(OC2H5)4 and Ti[O(CH2)3CH3]4. The Ti-EXAFS (Extended X-ray Absorption Fine Structure) above its K-adsorption edge was measured for the gel treated at elevated temperatures up to 800°C. The estimated TiO distance indicated that Ti4+ ions were initially introduced into four-coordinated sites in the gel structure and then, the TiO distance betwme longer by the further pyrolysis above 400°C.

AB - A SiO2-TiO2 gel containing 10 mol.% TiO2 was prepared with the mixed solution of Si(OC2H5)4 and Ti[O(CH2)3CH3]4. The Ti-EXAFS (Extended X-ray Absorption Fine Structure) above its K-adsorption edge was measured for the gel treated at elevated temperatures up to 800°C. The estimated TiO distance indicated that Ti4+ ions were initially introduced into four-coordinated sites in the gel structure and then, the TiO distance betwme longer by the further pyrolysis above 400°C.

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U2 - 10.1016/0022-3093(86)90116-X

DO - 10.1016/0022-3093(86)90116-X

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AN - SCOPUS:0022079689

SN - 0022-3093

VL - 82

SP - 97

EP - 102

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

IS - 1-3

ER -

Changes in Ti coordination number during pyrolysis of a SiO₂-TiO₂ gel

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