Development of in-situ XAFS technique for the flow-type reactor and its application to hydrothermal synthesis of metal oxide nanoparticles

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K14212
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Reaction engineering/Process system
• Research Institution: Tohoku University
• Principal Investigator: Takami Seiichi 東北大学, 多元物質科学研究所, 准教授 (40311550)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 水熱合成 / 反応速度 / ナノ粒子 / 金属酸化物

Outline of Final Research Achievements

In order to study reaction process and reaction rate of metal ion in water during hydrothermal synthesis using a flow-type reactor, X-ray absorption fine edge structure (XAFS) was measured with the high temperature XAFS cell developed in this study. The results showed that the XAFS cell can be used to measure XAFS spectra of liquid reactants at high temperature and high pressure. However, a part of the produced metal oxides deposited on the windows of the XAFS cell. Therefore, different type of XAFS cell without stagnant flow was proposed to realize in-situ XAFS measurement using flow-type configuration.

Free Research Field

化学工学、反応化学、ナノ粒子