TY - JOUR
T1 - Relationship between size distribution of synthesized nanoparticles and flow and thermal fields in a flow-type reactor for supercritical hydrothermal synthesis
AU - Sugioka, Ken Ichi
AU - Ozawa, Kyohei
AU - Kubo, Masaki
AU - Tsukada, Takao
AU - Takami, Seiichi
AU - Adschiri, Tadafumi
AU - Sugimoto, Katsumi
AU - Takenaka, Nobuyuki
AU - Saito, Yasushi
N1 - Funding Information:
This research was supported in part by JSPS KAKENHI Grant Number 24656461 and by Nippon Sheet Glass Foundation for Materials Science and Engineering . This work was carried out in part under the Visiting Researchers Program of Kyoto University Research Reactor Institute.
Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2016/3/1
Y1 - 2016/3/1
N2 - In this work, CeO2 nanoparticles were synthesized hydrothermally with supercritical water using a tubular flow reactor with three different configurations and various flow rates of the feed solution and supercritical water, and the effects of the reactor configuration and the flow rates of the two streams on the size distributions of the synthesized nanoparticles were investigated. In addition, the flow and thermal fields in the reactors were calculated numerically under the experimental conditions using FLUENT software, where the numerical results for the flow and thermal fields were also verified by neutron radiography. Comparing the experimental results of nanoparticle synthesis with the numerical results, it was revealed that the size distributions of the synthesized nanoparticles could be explained well on the basis of the flow patterns and temperature distributions in the reactor, which depended on the reactor configuration and process conditions.
AB - In this work, CeO2 nanoparticles were synthesized hydrothermally with supercritical water using a tubular flow reactor with three different configurations and various flow rates of the feed solution and supercritical water, and the effects of the reactor configuration and the flow rates of the two streams on the size distributions of the synthesized nanoparticles were investigated. In addition, the flow and thermal fields in the reactors were calculated numerically under the experimental conditions using FLUENT software, where the numerical results for the flow and thermal fields were also verified by neutron radiography. Comparing the experimental results of nanoparticle synthesis with the numerical results, it was revealed that the size distributions of the synthesized nanoparticles could be explained well on the basis of the flow patterns and temperature distributions in the reactor, which depended on the reactor configuration and process conditions.
KW - Flow and thermal fields
KW - Neutron radiography
KW - Numerical simulation
KW - Size distribution of nanoparticles
KW - Supercritical hydrothermal synthesis
KW - Tubular flow reactor
UR - http://www.scopus.com/inward/record.url?scp=84948389993&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84948389993&partnerID=8YFLogxK
U2 - 10.1016/j.supflu.2015.11.008
DO - 10.1016/j.supflu.2015.11.008
M3 - Article
AN - SCOPUS:84948389993
VL - 109
SP - 43
EP - 50
JO - Journal of Supercritical Fluids
JF - Journal of Supercritical Fluids
SN - 0896-8446
ER -