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The hydrogen reduction kinetics of uranium trioxide

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Abstract

The kinetics of hydrogen reduction of UO{sub 3} denitrated in fluidized bed has been studied with thermogravimetric method. The results show that the reduction kinetics of UO{sub 3} obeys Spencer-Toply equation within 0{approx}95% conversion in range of 550{approx}660 deg C which coincides with chemical reaction controlled unreacted-core model. The apparent activation energy of the reduction reaction is found to be 136.3 kJ/mol. The effects of concentration of hydrogen on reaction rate are examined.
Authors:
Shifang, Kang; Zhenfeng, Xie; Qingren, Ge [1] 
  1. Chemical Engineering Dept., Tianjin Univ. (China)
Publication Date:
Sep 01, 1991
Product Type:
Technical Report
Report Number:
CNIC-00533; TU-0011.
Reference Number:
SCA: 400702; 050000; PA: AIX-24:004969; SN: 93000930209
Resource Relation:
Other Information: PBD: Sep 1991
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; HYDROGEN; REDUCTION; URANIUM TRIOXIDE; CHEMICAL REACTION KINETICS; ACTIVATION ENERGY; CHEMICAL REACTION YIELD; MATHEMATICAL MODELS; PARTICLE SIZE; QUANTITY RATIO; TEMPERATURE RANGE 0400-1000 K; 400702; 050000; PROPERTIES OF RADIOACTIVE MATERIALS; NUCLEAR FUELS
OSTI ID:
10118658
Research Organizations:
China Nuclear Information Centre, Beijing, BJ (China)
Country of Origin:
China
Language:
Chinese
Other Identifying Numbers:
Other: ON: DE93610780; ISBN 7-5022-0543-8; TRN: CN9201790004969
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
[7] p.
Announcement Date:
Jun 30, 2005

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Citation Formats

Shifang, Kang, Zhenfeng, Xie, and Qingren, Ge. The hydrogen reduction kinetics of uranium trioxide. China: N. p., 1991. Web.
Shifang, Kang, Zhenfeng, Xie, & Qingren, Ge. The hydrogen reduction kinetics of uranium trioxide. China.
Shifang, Kang, Zhenfeng, Xie, and Qingren, Ge. 1991. "The hydrogen reduction kinetics of uranium trioxide." China.
@misc{etde_10118658,
title = {The hydrogen reduction kinetics of uranium trioxide}
 author = {Shifang, Kang, Zhenfeng, Xie, and Qingren, Ge}
 abstractNote = {The kinetics of hydrogen reduction of UO{sub 3} denitrated in fluidized bed has been studied with thermogravimetric method. The results show that the reduction kinetics of UO{sub 3} obeys Spencer-Toply equation within 0{approx}95% conversion in range of 550{approx}660 deg C which coincides with chemical reaction controlled unreacted-core model. The apparent activation energy of the reduction reaction is found to be 136.3 kJ/mol. The effects of concentration of hydrogen on reaction rate are examined.}
 place = {China}
 year = {1991}
 month = {Sep}
 }