Basicity and Solubility of Water in Solid Complex Oxides

固体复合氧化物中水的碱度和溶解度

• 批准号: 13450307
• 负责人: YAMAGUCHI Shu
• 金额: $ 9.66万
• 依托单位: The University of Tokyo (2003)Nagoya Institute of Technology (2001-2002)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13450307/
• 关键词: basicity; acidity; oxides; water; solubility; electron spectroscopy; proton; infrared spectroscopy

The Solubility of water in various solid complex oxides has been examined and discussed based on the partial acid/base reactions on the local acid and base sites in the oxides. The water dissolution reaction is defined as a overall reaction of the partial acid/base reactions below:【numerical formura】Oxygen vacancies and normal oxide ions on the normal site in the vicinity of defects or dopant cations with the highest intensity among similar sites are defined as acid site and basic site, which are favorable sites for the reactions (1) and (2), respectively. The intensity of basicity or acidity of respective sites are defined using the electronic band structure of host oxides; acid site and base site correspond to LUMO and HOMO levels of host oxides and form acceptor and proton induced levels as results of the partial reactions (1) and (2). In order to examine the concept above, both the solubility measurements on single crystals of CeO_2 doped with various kind of trivalent lanthanide ions using Secondary Ion Mass Spectrometiy (SIMS) and Photo Electron Spectroscopy and Soft X-ray Absorption/Emission Spectroscopy measurements, to compare the relatively low solubility of water in doped ZrO_2. Also examined were both the water solubility and electron spectroscopy measurements on titanates, zirconates, and cerateswith perovskitestructuredopedwithacceptordopantstoB-site. Fromtheseexperimental results, the validity of proposed partial acid/base reaction model was confirmed.

基于氧化物中局部和碱基的局部酸/碱基eastions，已经在各种固体氧化物中进行了溶解度，将水发现反应定义为二酸/碱基反应的总体反应：氧气空位：和在相似位点之间具有最高水平的缺陷或掺杂阳离子附近正常位点上的正常氧化物的定义与ASID位点和基本位点一样，它们是反应（1）和（2）的有利位置，这是强度相应位点的基础是使用宿主氧化物的电子带结构来定义的；基本位点对应于宿主氧化物的Lumo和同性恋水平，形式和质子诱发的伸出水平作为部分现实的结果（2）。概念avove，使用次级离子质量特殊光谱法（SIMS）和照片电子特殊镜头和软X射线吸收/发射光谱测量值，ceo_2的单晶溶解度均可溶解度h。从theSexperment的结果中，滴定型pantos的水溶液测量结果。

项目成果

T.Higuchi, et al.: "Protonic Conduction in the Single Crystal. of SrZr_<0.95>M_<0.05>O_3 (M=Y, Sc, Yb, Er)"Physical Review B. 40. 4162-4163 (2001)

T.Higuchi 等人：“SrZr_<0.95>M_<0.05>O_3 (M=Y、Sc、Yb、Er) 的单晶中的质子传导”物理评论 B.40.4162-4163 (2001)

Tohru Higuchi, Shu Yamaguchi 他3名: "Ti-O Hybridization Effect of La-doped SrTiO_3 Observed by Resonant-Photoemission Spectroscopy"Jpn.J.Appl.Phys. 41. 5674-5675 (2001)

Tohru Higuchi、Shu Yamaguchi 等 3 人：“通过共振光发射光谱观察 La 掺杂 SrTiO_3 的 Ti-O 杂化效应”Jpn.J.Appl.Phys 41. 5674-5675 (2001)

T.Higuchi, S.Yamaguchi, et al.: "Electronic structure of protonic conductors SrTiO_3 and SrCeO_3 by O 1s X-ray adsorption spectroscopy"Solid State Ionics. 154-155. 735-739 (2002)

T.Higuchi、S.Yamaguchi等人：“通过O 1s X射线吸收光谱研究质子导体SrTiO_3和SrCeO_3的电子结构”固态离子学。

T.Higuchi, S.Yamaguchi, et al.: "Electronic Structure in the Bulk State of Protonic Conductor CaZrzO_3 by Resonant Soft-X-Ray Emission Spectroscopy"Physical Review B. 41. L938-L940 (2002)

T.Higuchi、S.Yamaguchi 等人：“通过共振软 X 射线发射光谱研究质子导体 CaZrzO_3 体态的电子结构”物理评论 B.41.L938-L940 (2002)

T.Higuchi, S.Yamaguchi, et al.: "Water Solubility in Ceria and Zirconia Doped with Rare Earth Oxides"Abstracts of The 28th Symposium on Solid State Ionics. 46-47 (2001)

T.Higuchi、S.Yamaguchi 等人：“Water Solubility in Ceria and Zirconia Doped with Rare Earth Oxides”第 28 届固态离子学研讨会摘要。