Solid-phase thermal decomposition of 2,4-dinitroimidazole (2,4-DNI) Metadata

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Title

  • Main Title Solid-phase thermal decomposition of 2,4-dinitroimidazole (2,4-DNI)

Creator

  • Author: Minier, L.
    Creator Type: Personal
  • Author: Behrens, R. Jr.
    Creator Type: Personal
    Creator Info: Rome Astronomical Observatory (Italy). Space Physics Research Center
  • Author: Bulusu, S.
    Creator Type: Personal
    Creator Info: Army Armament Research and Development Command, Dover, NJ (United States). Energetic Materials Div.

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: USDOE, Washington, DC (United States)
  • Sponsor: United States. Department of Defense.
    Contributor Type: Organization
    Contributor Info: Department of Defense, Washington, DC (United States)

Publisher

  • Name: Rome Astronomical Observatory (Italy). Space Physics Research Center
    Place of Publication: United States

Date

  • Creation: 1996-12-31

Language

  • English

Description

  • Content Description: The solid-phase thermal decomposition of the insensitive energetic nitroaromatic heterocycle 2,4-dinitroimidazole (2,4-DNI: mp 265--274C) is studied utilizing simultaneous thermogravimetric modulated beam mass spectrometry (STMBMS) between 200 and 247C. The pyrolysis products have been identified using perdeuterated and {sup 15}N-labeled isotopomers. The products consist of low molecular-weight gases and a thermally stable solid residue. The major gaseous products are NO, CO{sub 2}, CO, N{sub 2}, HNCO and H{sub 2}O. Minor gaseous products are HCN, C{sub 2}N{sub 2}, NO{sub 2}, C{sub 3}H{sub 4}N{sub 2}, C{sub 3}H{sub 3}N{sub 3}O and NH{sub 3}. The elemental formula of the residue is C{sub 2}HN{sub 2}O and FTIR analysis suggests that it is polyurea- and polycarbamate-like in nature. Rates of formation of the gaseous products and their respective quantities have been determined for a typical isothermal decomposition experiment at 235C. The temporal behaviors of the gas formation rates indicate that the overall decomposition is characterized by a sequence of four events; (1) an early decomposition period induced by impurities and water, (2) an induction period where C0{sub 2} and NO are the primary products formed at relatively constant rates, (3) an autoacceleratory period that peaks when the sample is depleted and (4) a final period in which the residue decomposes. Arrhenius parameters for the induction period are E{sub a} = 46.9 {plus_minus} 0.7 kcal/mol and Log(A) = 16.3 {plus_minus} 0.3. Decomposition pathways that are consistent with the data are presented.
  • Physical Description: 9 p.

Subject

  • Keyword: Chemical Explosives
  • Keyword: Pyrolysis
  • Keyword: Organic Nitrogen Compounds
  • Keyword: Residues
  • Keyword: Chemical Reaction Kinetics
  • Keyword: Nitro Compounds
  • Keyword: Combustion Products
  • Keyword: Imidazoles
  • STI Subject Categories: 45 Military Technology, Weaponry, And National Defense

Source

  • Conference: Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 27 Nov - 1 Dec 1995

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Other: DE96003252
  • Report No.: SAND--96-8451C
  • Report No.: CONF-951155--13
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 174686
  • Archival Resource Key: ark:/67531/metadc669221

Note

  • Display Note: OSTI as DE96003252