Solubility determination of TNT and wax and their fractionation from an explosive material using a supercritical fluid

被引:13
作者
Ashraf-Khorassani, M [1 ]
Taylor, LT [1 ]
机构
[1] Virginia Polytech Inst & State Univ, Dept Chem, Blacksburg, VA 24061 USA
关键词
D O I
10.1021/je9901280
中图分类号
O414.1 [热力学];
学科分类号
摘要
The solubilities of 2,4,6-trinitrotoluene (TNT) and wax have been measured in supercritical carbon dioxide (CO2) at three pressures and temperatures under static conditions. The concentrations of each component were determined off-line via ultraviolet (TNT) and evaporative light scattering (wax) detection. The solubility of TNT was an order of magnitude higher than that of wax. Gas chromatographic assay of the wax extract revealed that only the lower molecular weight components dissolved. Fractionation of the TNT and wax from an explosive material referred to as Composition B was attempted by making incremental increases in CO2 density. Composition B contains 59.5% cyclotrimethylene triamine (RDX), 39.5% TNT, and 1% wax. While TNT and wax could be easily isolated from nitramine RDX, attempts to separate TNT from wax were not totally successful. More specifically, the initial fractions contained the lower molecular weight wax components in addition to major amounts of TNT. Since the percentage of TNT was approximately 50 dimes the amount of wax, later fractions were 100% TNT although most of the TNT was removed at the lower densities.
引用
收藏
页码:1254 / 1258
页数:5
相关论文
共 17 条
  • [1] Supercritical fluid extraction of mercury(II) ion via in situ chelation and pre-formed mercury complexes from different matrices
    Ashraf-Khorassani, M
    Taylor, LT
    [J]. ANALYTICA CHIMICA ACTA, 1999, 379 (1-2) : 1 - 9
  • [2] Solubility study of sulfamethazine and sulfadimethoxine in supercritical carbon dioxide, fluoroform, and subcritical freon 134A
    AshrafKhorassani, M
    Combs, MT
    Taylor, LT
    Schweighardt, FK
    Mathias, PS
    [J]. JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1997, 42 (03) : 636 - 640
  • [3] ANHYDROUS MILK-FAT FRACTIONATION WITH CONTINUOUS COUNTERCURRENT SUPERCRITICAL CARBON-DIOXIDE
    BHASKAR, AR
    RIZVI, SSH
    SHERBON, JW
    [J]. JOURNAL OF FOOD SCIENCE, 1993, 58 (04) : 748 - 752
  • [4] Fractionation of poly(ethylene oxide) star samples by supercritical fluids
    Cansell, F
    Botella, P
    Six, JL
    Garrabos, Y
    Tufeu, R
    Gnanou, Y
    [J]. POLYMER JOURNAL, 1997, 29 (11) : 910 - 913
  • [5] EFFECTS OF EXTRACTION AND FRACTIONATION PRESSURES ON SUPERCRITICAL EXTRACTION OF CHOLESTEROL FROM BEEF TALLOW
    CHAO, RR
    MULVANEY, SJ
    HUANG, HM
    [J]. JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY, 1993, 70 (02) : 139 - 143
  • [6] SUPERCRITICAL FLUID FRACTIONATION OF A NONIONIC SURFACTANT
    ECKERT, CA
    EKART, MP
    KNUTSON, BL
    PAYNE, KP
    TOMASKO, DL
    LIOTTA, CL
    FOSTER, NR
    [J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1992, 31 (04) : 1105 - 1110
  • [7] FRACTIONATION OF ASPHALT MATERIALS BY USING SUPERCRITICAL CYCLOHEXANE AND PENTANE
    JEMISON, HB
    DAVISON, RR
    GLOVER, CJ
    BULLIN, JA
    [J]. FUEL SCIENCE & TECHNOLOGY INTERNATIONAL, 1995, 13 (05): : 605 - 638
  • [8] KRUKONIS VJ, EXPLORATORY DEV NEW
  • [9] Solubility of RDX in dense carbon dioxide at temperatures between 303 K and 353 K
    Morris, JB
    [J]. JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1998, 43 (02) : 269 - 273
  • [10] MORRIS JB, 1997, COMMUNICATION