Molecular Sieve Sensor for Pollutants Detection at Elevated Temperat

用于高温污染物检测的分子筛传感器

• 批准号: 07555543
• 负责人: OKUBO Tatsuya
• 金额: $ 2.18万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555543/
• 关键词: Zeolite; Quartz; Sensor; Molecular Sieve; Thin Film; NOx; SO_2; Ion Exchange; 水熱合成; モレキュラーシ-ヴ

The aim of this project is to develop NOx and SO2 sensors selective at elevated temperature by molecular sieving zeolite film formed on quartz substrates. These sensors are useful to detect the exhaust gas from boiler, furnace engine...ets., and the information can be feeded back to the combustion system. Such a control contributes the human being in view of energy saving and environmental protection.ZSM-5 film was formed on quartz substrate. The substrate was placed in an autoclave where hydrothermal reaction proceeded. We examined the influence of TEOS (Si source) and water concentrations, and the type of structure directing agents. The products were characterized by XRD and SEM which were purchased by this budget. The synthesis condition to obtain oriented film and tailored crystal size was found. A sensor system was fabricated on Au-Cr electrode on quartz. Sensor testing system controled by microcomputer was constructed. After removing the organic structure directing agent by burning, ion-exchange of Na with Cu was performed. This sensor was sensitive to NOx at 100ﾟC.In addiion, we studied the synthesis condition for Zeolite Y,and fould the condition to synthesize Y as sigle phase. SO2 was was detected at 150ﾟC.

本计画的目的是借由在石英基材上形成分子筛膜，以发展高温下选择性的氮氧化物与二氧化硫感测器。这些传感器可用于检测锅炉、加热炉、发动机等的废气。等等，并且该信息可以反馈到燃烧系统。在石英衬底上制备了ZSM-5分子筛膜。将衬底放置在高压釜中，其中进行水热反应。我们研究了TEOS（Si源）和水浓度的影响，以及结构导向剂的类型。通过本预算购买的XRD和SEM对产物进行了表征。找到了获得取向膜和定制晶体尺寸的合成条件，并在石英上的金铬电极上制作了传感器系统。建立了微机控制的传感器测试系统。通过燃烧除去有机结构导向剂后，进行钠与铜的离子交换。该传感器在100 ℃时对NOx有较好的灵敏度。另外，我们还研究了Y型分子筛的合成条件，确定了合成Y型分子筛的条件。在150 ℃时检测到SO2。

项目成果

T.Okubo et al.: "Flux Growth of Milli meter-sized Single Crystal Aluminate Sodalit." Synthesis of Microporous Materials:Zeolite,Clay and Nanostructure. 189-95 (1996)

T.Okubo 等人：“毫米级单晶铝酸方钠石的助熔剂生长”。

T.Okubo, J.Sun, C.B.Dartt and M.E.Davis: "Flux Growth of Millimeter-Sized Single Crystal Aluminate Sodalite" "Synthesis of Microporous Materials : Zeolites, Clays, and Nanostructures", Marcel Dekker, Inc., New York.189-95 (1996)

T.Okubo、J.Sun、C.B.Dartt 和 M.E.Davis：“毫米级单晶铝酸盐方钠石的通量生长”“微孔材料的合成：沸石、粘土和纳米结构”，Marcel Dekker, Inc.，纽约。189

大久保 達也: "ゼオライト単結晶の育成" ゼオライトニューズレター. 13. 49-55 (1996)

Tatsuya Okubo：“沸石单晶的生长”《沸石通讯》13. 49-55 (1996)。

Isao Sasaki and Tatsuya Okubo: "Chemical Zensor using Zeolites" PETROTECH. (in press.).

Isao Sasaki 和 Tatsuya Okubo：“使用沸石的化学 Zensor”PETROTECH。

Mark C.Lovallo, Michael Tsapatsis and Tatsuya Okubo: "Preparation of an Asymmetric Zeolite L Film" Chemistry of Materials. 8. 1579-83 (1996)

Mark C.Lovallo、Michael Tsapatsis 和 Tatsuya Okubo：“非对称沸石 L 薄膜的制备”材料化学。