Static and Dynamic Effects of Ferroelectric Piezoelectrics upon Adsorptive Catalytic Properties of Combined Thin Metal and Semiconducting Oxide Films.

铁电压电体对金属和半导体氧化物组合膜吸附催化性能的静态和动态影响。

基本信息

  • 批准号:
    61470003
  • 负责人:
  • 金额:
    $ 3.71万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
  • 财政年份:
    1986
  • 资助国家:
    日本
  • 起止时间:
    1986 至 1987
  • 项目状态:
    已结题

项目摘要

A poled ferroelectric piezoelectrics exposes the positive and negative polar suraces and permits the generation of surface acoustic wave(SAW). In the present work, a poled single crystal of lithium niobate(LinbO_3) was employed as support on which catalytically active phases such as semiconducting oxides(TiO_2,SnO) or metal(Pd) were deposited as thin layers. The static effects of polarization-direction of the support as well as the dynamic effects due to SAW(20 MHz) upon the adsorptive and catalytic properties of the combined catalytically active phases were studied. The changes in surface conductivity due to the chemisorption of various gases such as H_2,CO,CO_2 and C_2H_4 on TiO_2/LiNbO_3 and SnO/LiNbO_3 were markedly greater than for the positive polar support than for the negative polar one, and the differences between the polar supports became larger with increasing ionization potential of the adsorbed gases. These polar direction-dependences were accounted for in terms of band bending caused in the semiconducting oxides by contact with LinbO_3 surface. For the Pddeposited SAW catalysts, the intensity of SAW was found to be sensitive to the adsorption of small amounts of O_2 and H_2. The SAW effects were examined for different kinds of catalytic reactions such as oxidation (CO+O_2, H_2+o_2), decomposition (CH_3OH, CH_3 OH+O_2) and hydrogenation (C_2H_4+H_2), and it was observed that the dynamic SAW effects were prominent for the reactions involving polar molecules.
螺旋的铁电压电揭示了正极和负极的表面,并允许产生表面声波(SAW)。在目前的工作中,使用二甲锂锂(Linbo_3)的单晶作为支撑,将催化活性相(例如半导体氧化物(TIO_2,SNO)或金属(PD)作为薄层沉积。研究了支持(20 MHz)对组合催化活性相的吸附和催化特性引起的支撑的极化方向以及动态效应的静态效应。 TIO_2/LINBO_3和SNO/LINBO_3上的H_2,CO,CO_2和C_2H_4等各种气体化学吸附引起的表面电导率的变化明显大于对负极支撑的积极支撑,而对负极支撑物的差异高,并且在极性支撑之间的差异随着吸收型气体的电离潜力而更大。这些极性方向依赖性是根据与Linbo_3表面接触在半导体氧化物中引起的带弯曲的。对于PDDEPOSSED SAW催化剂,发现SAW的强度对少量O_2和H_2的吸附敏感。检查了各种催化反应的锯效应,例如氧化(CO+O_2,H_2+O_2),分解(CH_3OH,CH_3OH,CH_3 OH+O_2)和氢化(C_2H_4+H_2),并且观察到涉及极性分子的反应的动力学作用是显着的。

项目成果

期刊论文数量(14)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Yasunobu Inoue;Osamu Hayashi;Kazunori Sato;Toyoyuki Kubokawa: "Proc.9th International Congr.Catal.," Elsevier,
Yasunobu Inoue;Osamu Hayashi;Kazunori Sato;Toyoyuki Kubokawa:“Proc.9th International Congr.Catal.”,Elsevier,
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Yasunoby Inoue;Osamu Hayashi;Kazunori Sato and Toyoyuki Kubokawa: "Proc. 9th International Congr. Catal. ," Elsevier,
Yasunoby Inoue;Osamu Hayashi;Kazunori Sato 和 Toyoyuki Kubokawa:“Proc. 9th International Congr. Catal.”,Elsevier,
  • DOI:
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  • 通讯作者:
Yasunobu Inoue;Kazunori Sato;Osamu Hayashi: J.Chem.Soc.Faraday Trans.I.83. 3061-3068 (1987)
Yasunobu Inoue;Kazunori Sato;Osamu Hayashi:J.Chem.Soc.Faraday Trans.I.83。
  • DOI:
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    0
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  • 通讯作者:
Yasunobu.Inoue,Osamu.Hayashi,Kazunori.Sato,and Toyoyuki,Kubokawa: Elsevier,. Polarization Direction Effects of Poled Ferroelectric Semiconductors, PbZr_<1-x> Ti_xO_3, upon Photocatalytic Decomposition of Water,
Yasunobu.Inoue,Osamu.Hayashi,Kazunori.Sato,and Toyoyuki,Kubkawa:Elsevier,。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Yasunobu Inoue;Kazunori Sato;Osamu Hayashi: J.Chem.Soc.Faraday Transactions 【I】.
Yasunobu Inoue;Kazunori Sato;Osamu Hayashi:J.Chem.Soc.Faraday Transactions [I]。
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前往

INOUE Yasunobu的其他基金

Activation of catalyzed-liquid phase reactions in a microreactor by acoustic wave resonance oscillation
声波共振振荡激活微反应器中的催化液相反应
  • 批准号:
    23246137
    23246137
  • 财政年份:
    2011
  • 资助金额:
    $ 3.71万
    $ 3.71万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
    Grant-in-Aid for Scientific Research (A)
Effects of surface acoustic waves on catalyzed-liquid phase reactions in a microreactor
表面声波对微反应器中催化液相反应的影响
  • 批准号:
    20246117
    20246117
  • 财政年份:
    2008
  • 资助金额:
    $ 3.71万
    $ 3.71万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
    Grant-in-Aid for Scientific Research (A)
Application of Resonance Oscillation to the Design of Heterogeneous Catalysts with Artificially Controllable Functions for Chemical Reactions
共振振荡在化学反应人工可控功能多相催化剂设计中的应用
  • 批准号:
    15206088
    15206088
  • 财政年份:
    2003
  • 资助金额:
    $ 3.71万
    $ 3.71万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
    Grant-in-Aid for Scientific Research (A)
Photocatalysts with Tunnel Structures for Decomposition of Orgnic Compounds
用于分解有机化合物的隧道结构光催化剂
  • 批准号:
    07555249
    07555249
  • 财政年份:
    1995
  • 资助金额:
    $ 3.71万
    $ 3.71万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
    Grant-in-Aid for Scientific Research (B)
Effects of Resonance Oscillation on Activation of Thin film Catalysts Deposited on a Ferroelectric Substrate
共振振荡对铁电基板上沉积薄膜催化剂活化的影响
  • 批准号:
    07454185
    07454185
  • 财政年份:
    1995
  • 资助金额:
    $ 3.71万
    $ 3.71万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
    Grant-in-Aid for Scientific Research (B)
Artificial Control of Catalytic Activity of Thin Film Catalysts by Surface Acoustic Waves
表面声波人工控制薄膜催化剂的催化活性
  • 批准号:
    03453006
    03453006
  • 财政年份:
    1991
  • 资助金额:
    $ 3.71万
    $ 3.71万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
    Grant-in-Aid for General Scientific Research (B)

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