Development of highly functionalized fabricated surface by XPEEM-its catalyses and properties

通过 XPEEM 开发高功能化的加工表面 - 其催化剂和性能

• 批准号: 11440202
• 负责人: ASAKURA Kiyotaka
• 金额: $ 1.86万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11440202/
• 关键词: well-defined inhomogenous surface; XPEEM; VSbOx; Dipping; electron lithography; selective oxidation; 規整不均一触媒

(1) Preparation of fabricated surface.The fabricated VSbO_4-Sb_2O_4 catalyst which shows high selectivity for hydrocarbon oxidation reaction under the interaction between the two phases was prepared by electron lithography method. VSbO_4 thin layer was produced by sol-gel technique. After the resist deposition, the patterns were drawn by electron beam. Sb_2O_4 was deposited on it to create the fabricated Sb_2O_4 domain on VSbO_4 surface. The surface was characterized by XPS, XRD and AFM and we found the surface was stable up to 773 K.(2) Improvement of XPEEMWe installed X-ray tube and tried XPEEM measurements. But we found that it took so long a time that we had to use much stronger X-ray source. We are now bringing the system to Photon Factory (SR facility in Tsukuba)(3) Setup of reaction systemWe produced a reaction system under the following design concept a) Fast analysis and high resolution using QMS.b) Reaction under high pressure by using differential pumping. c) Direct heating of samples by IR hearter. d) Combination of SEM, LEED, and AES.e) Fine measurement of temperature by TC

(1)制备表面的制备。采用电子光刻法制备了VSbO_4-Sb_2O_4催化剂，该催化剂在两相相互作用下对烃类氧化反应表现出高选择性。采用溶胶-凝胶技术制备VSbO_4薄层。抗蚀剂沉积后，通过电子束绘制图案。将 Sb_2O_4 沉积在其上，以在 VSbO_4 表面上创建制造的 Sb_2O_4 域。通过XPS、XRD和AFM对表面进行了表征，发现表面在773K温度下保持稳定。(2)XPEEM的改进我们安装了X射线管并尝试了XPEEM测量。但我们发现花费的时间太长，以至于我们不得不使用更强的 X 射线源。我们现在将该系统带到光子工厂（筑波的SR设施）（3）反应系统的设置我们根据以下设计理念生产了一个反应系统：a）使用QMS进行快速分析和高分辨率。b）使用差动泵在高压下进行反应。 c) 通过红外加热装置直接加热样品。 d) SEM、LEED 和 AES 的组合。e) 通过 TC 精确测量温度

项目成果

Inoue,T.: "Characterization and Selective Oxidation Catalysis of Modified Pt Particles on SbO_x"Appl.Catal.A,. 191. 131-140 (2000)

Inoue,T.：“SbO_x 上改性 Pt 颗粒的表征和选择性氧化催化”Appl.Catal.A,。

S.Takakusagi, M.Kato, Y.Sakai, K.Fukui, K.Asakura and Y.Iwasawa: "Development of an XPEEM system with multi-probes and its application to surface imaging at static and dynamic states."J.Microscopy. 200. 240-250 (2000)

S.Takakusagi、M.Kato、Y.Sakai、K.Fukui、K.Asakura 和 Y.Iwasawa：“多探头 XPEEM 系统的开发及其在静态和动态表面成像中的应用。”J.Microscopy

A.Yamaguchi, T.Shido, K.Asakura, Y.Iwasawa: "Surface Catalytic reactions assisted by Gas phase molecules on supported Co ensemble catalysts"Studies in Surface Science and Catalysis. 130. 605-610 (2000)

A.Yamaguchi、T.Shido、K.Asakura、Y.Iwasawa：“负载型 Co 系综催化剂上气相分子辅助的表面催化反应”表面科学与催化研究。

Asakura,K.: "Polarization-Dependent Total-Reflection Fluorescence EXAFS Study on Active Structures on Single Crystal Oxides as Model Catalyst Surfaces"Topics in Catal.. 10. 209-219 (2000)

Asakura,K.：“作为模型催化剂表面的单晶氧化物活性结构的偏振相关全反射荧光 EXAFS 研究”主题于 Catal.. 10. 209-219 (2000)

T.Inoue, S.T.Oyama, H.Imoto, K.Asakura and Y.Iwasawa: "Characterization and Selective Oxidation Catalysis of Modified Pt Particles on SbOx"Appl.Catal.A. 191. 131-140 (2000)

T.Inoue、S.T.Oyama、H.Imoto、K.Asakura 和 Y.Iwasawa：“改性 Pt 颗粒在 SbOx 上的表征和选择性氧化催化”Appl.Catal.A。