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Accession number:  20131716241671

  Title:  Nitrolysis kinetics of DADN by N2O5/HNO3
  Authors:  He, Zhiyong1; Luo, Jun1 ; L¨¹, Chunxu1; Xu, Rong2; Li, Jinshan2  
  Author affiliation:  1 School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China  
   2 Institute of Chemical Materials, CAEP, Mianyang 621900, Sichuan, China  
  Corresponding author:  Luo, J. (luojun@njust.edu.cn)  
  Source title:  Huagong Xuebao/CIESC Journal
  Abbreviated source title:  Huagong Xuebao
  Volume:  64
  Issue:  4
  Issue date:  April 2013
  Publication year:  2013
  Pages:  1269-1275
  Language:  Chinese
  ISSN:  04381157  
  CODEN:  HUKHAI  
  Document type:  Journal article (JA)
  Publisher:  Chemical Industry Press, No. 3 Huixinli, Chaoyangqu, Beijing, 100029, China
  Abstract:  Concentrations of reactant, intermediate, product were measured by HPLC during nitrolysis of DADN(1, 5-diacetyl-3, 7-dinitro-1, 3, 5, 7-tetraazacyclooctane)by N2O5/HNO3 at temperatures of 303, 313, 323, and 333 K. Based on the mechanism of the nitrolysis reaction(first-order consecutive reaction), the kinetic parameters were calculated from these data obtained. The activation energies were 2.3996¡Á104 J¡¤mol-1 for the first step(DADN to SEX(1-acetyl-3, 5, 7-trinitro-1, 3, 5, 7-tetrazacyclooctane))and 1.6598¡Á104 J¡¤mol-1 for the second step(SEX to HMX(high melt point explosive)), and the pre-exponential factors were 2.2000¡Á104 h-1 and 6.5178¡Á102 h-1, respectively. The reaction rate constant is larger for the fist step than for the second one. In order to check the intermediate in nitrolysis reaction of DADN, an experiment was carried out to separate and identify the intermediate(also by-product). The results indicate that this intermediate is SEX. © All Rights Reserved.
  Number of references:  22
  Main heading:  Reaction intermediates  
  Controlled terms:  Activation energy  -  Explosives  -  HMX  -  Kinetics  -  Rate constants  -  Reaction kinetics  
  Uncontrolled terms:  Consecutive reaction  -  DADN  -  First-order  -  Nitrolysis  -  Preexponential factor  -  SEX  
  Classification code:  801.4 Physical Chemistry -  804 Chemical Products Generally -  931 Classical Physics; Quantum Theory; Relativity -  931.3 Atomic and Molecular Physics
  DOI:  10.3969/j.issn.0438-1157.2013.04.021
  Database:  Compendex
3Â¥2013-06-26 10:02:30
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