IMPROVEMENT IN MEASURING OSCILLATION BEHAVIOR OF NONLINEAR CHEMICAL REACTIONS UNDER MICROGAVITY

微重力下非线性化学反应振荡行为测量的改进

• 批准号: 09640718
• 负责人: FUJIEDA Shuko
• 金额: $ 2.05万
• 依托单位: OCHANOMIZU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09640718/
• 关键词: CHEMICAL OSCILLATION REACTION; BELOUSOV-ZHABOTINSKY REACTION; MICROGRAVITY; GRAVITY; NONLINEAR REACTION; COMPLEX SCIENCE; IMAGE DATA; CHEMICAL WAVES OF REACTION-DIFFUSION SYSTEM; ベロ-ゾフ-ザボチンスキー反応; 無重力場

Kondepudi and Prigogine indicated theoretically that nonequilibrium system might be influenced largely on the selection and the creation of structure even in very week gravitational field. Belousov-Zhabotinsky (BZ) reactions are typical of a chemical oscillation reaction and well known as nonlinear chemical phenomena in nonequilibrium process. In the present study, for the purpose of inspecting experimentally the theoretical research, the transfer velocity of chemical waves in the diffusion-reaction system of BZ reaction were observed accurately as image data under microgravity condition by improving the starting materials and reaction vessels. The reaction solution was composed of bromate, sulfuric acid, ferroin and 1,4-cyclohexanedione (CHD) for a bubble free system. The free-fall facility of JAMIC (Japan Microgravity Center, Kami-sunagawa, Hokkaido) was used to generate microgravitational circumstance. The good quality of microgravity was available for 9.8 s. The image data observed via CCD camera and 8 mm video deck were analyzed by NIH image. In glass tubing vessels, transfer velocities of the chemical waves were successfully estimated in the series under normal gravity before falling, microgravity in falling, large gravity for ending and again normal gravity after falling.

Kondepudi和Prigogine从理论上指出，即使在很弱的引力场中，非平衡系统也可能对结构的选择和产生产生很大的影响。Belousov-Zhabotinsky（BZ）反应是一种典型的化学振荡反应，是非平衡过程中的非线性化学现象。为了对理论研究进行实验检验，通过改进原材料和反应容器，在微重力条件下，对BZ反应扩散-反应体系中化学波的传递速度进行了精确的图像观测。反应液由溴酸盐、硫酸、亚铁试剂和1，4-环己二酮（CHD）组成。利用日本微重力中心（日本微重力中心，北海道上砂川）的自由落体设施产生微重力环境。在9.8s内可获得良好的微重力质量。通过CCD摄像机和8 mm视频卡座观察的图像数据由NIH图像分析。在玻璃管容器中，成功地估计了化学波的传输速度在下降前正常重力，下降中微重力，大重力结束和下降后再次正常重力下的系列。

项目成果

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S. Fujieda 等人：“虚拟缺失重力下的非平衡/非线性化学振荡”，空间研究进展（1999 年）。

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S.Fujieda、H.Ogata：“Briggs-Rauscher 反应中化学振荡的量热法和电位测定法，同时测量产生的氧气体积”Talanta。

S.Fujieda, et al.: "Automated Experimental Assembly for Studying the Reaction-Diffusion Behavior of Belousov-Zhabotisky Reactions iinder Microgravity" Analytical Sciences. 15. 159-164 (1999)

S.Fujieda 等人：“用于研究微重力下别洛乌索夫-扎博蒂斯基反应的反应扩散行为的自动实验装置”分析科学。