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Title: In-situ Neutron Tomography on Mixing Behavior of Supercritical Water and Room Temperature Water in a Tubular Flow Reactor
Authors: Takami, Seiichi
Sugioka, Ken-ichi
Ozawa, Kyohei
Tsukada, Takao
Adschiri, Tadafumi
Sugimoto, Katsumi
Takenaka, Nobuyuki
Saito, Yasushi  kyouindb  KAKEN_id
Author's alias: 齊藤, 泰司
Keywords: tomography
flow-type reactor
supercritical water
hydrothermal reaction
Issue Date: 2015
Publisher: Elsevier BV
Journal title: Physics Procedia
Volume: 69
Start page: 564
End page: 569
Abstract: We have synthesized metal oxide nanoparticles through hydrothermal reaction at around 400 °C and 25 MPa by mixing the stream of metal ion solution at room temperature with another stream of supercritical water in a continuous flow-type reactor. In order to visualize the mixing behavior of the two streams, we performed neutron tomography measurements. By performing tomography measurements while rotating the mixing piece with supplying supercritical water and room temperature water, we succeeded in obtaining the three dimensional distribution of neutron attenuation. The results clearly showed how the two streams mix, which serves as a reference for numerical simulation.
Rights: © 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license(
DOI(Published Version): 10.1016/j.phpro.2015.07.080
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