Direct visualization of active reaction sites on catalyst surfaces with stroboscopic environmental TEM
| Project/Area Number |
25390078
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Thin film/Surface and interfacial physical properties
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| Research Institution | Japan Fine Ceramics Center (2014-2015)
Nagoya University (2013) |
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Principal Investigator |
Kawasaki Tadahiro 一般財団法人ファインセラミックスセンター, その他部局等, 研究員 (10372533)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 環境電子顕微鏡（ETEM） / 金ナノ触媒 / 反応サイト / 可視化 / 隔膜 / 環境セル / 環境電子顕微鏡 / ETEM / ガス雰囲気 / 触媒 / 金ナノ粒子 / ナノ粒子触媒 / マルチスライス / 色収差 / ホローコーン照明 / ナノ粒子 / 金 / 反応その場観察 / ストロボ観察 |
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| Outline of Final Research Achievements |
The purpose of this study is to determine directly the active reaction sites on the nanoparticulate catalyst surfaces by using a stroboscopic environmental transmission electron microscopy (ETEM) enabling to in-situ observations of materials even in gaseous environments.
We have successfully developed a new specimen holder having a co-axial structure, and also a gas-mixing system, though fabrication of a stroboscopic illumination system had to be deferred due to technical and financial problems. The developed ETEM have realized in-situ observations of nanoparticulate gold catalysts supported on TiO2 anatase during a propene epoxidation reaction. As a result, it was observed that the reaction products of a propene oxide appear as a liquid form at around the Au/ TiO2 interfaces just in a reaction condition. Therefore, we can successfully conclude that the reaction sites of the gold catalysts are the perimeter of the interface between the gold and the TiO2 substrate.
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Report
(4 results)
Research Products
(41 results)
