Journal of the Japan Institute of Energy
New Arrival Alert : OFF

You can use this feature after you logged into the site.
Please click the button below.

Log in / Sign up
ONLINE ISSN: 1882-6121
PRINT ISSN: 0916-8753

Journal of the Japan Institute of Energy Vol. 73 (1994), No. 4

  • Graphic Representation of the 13C Chemical Shifts and Substructures of Hydrocarbons and Oxygen-containing Compounds for the Analysis of Chemical Structures of Coals and the Related Material

    pp. 267-278

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.3775/jie.73.267

    The 13C chemical shift ranges are representated graphically for the carbon types and the α -circumstances in hydrocarbons and oxygen-containing compounds. The main purpose of the charts is simple and easy utilization of the correlations between 13C shift range and the substructure for the structural analysis of the natural products such as coals, soils, lignins and their reaction products.
    The 13C NMR spectra were observed for Ishikari peat, the extracted residue, the extracted oil, a lignin and a cellulose. In the solid state, CPMAS and the dipolar -ing spectra were observed, and the chemical structures of Ishikari peat were discussed by using the charts. The most different points in structure of Ishikari peat from woods are the inclusion of the alkyl chain structures.
  • Evaluation of Coking Properties of Coals by Quantification of Pyrolytic Products

    pp. 279-289

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.3775/jie.73.279

    In order to evaluate coal for metallugical coke, thermogravimetric analysis, quantification of gaseous products during pyrolysis, caking and coking properties of different rank of coals including air oxidized were investigated. Following results were obtained.
    (1) Degree of oxidation of coals can be detected by monitoring the change of CO, CO2 and CH4 in pyrolytic gases.
    (2) The higher was the CH4 concentration in the gases, the higher was the resolidified temperature with Gieseler plastometry become. The developement of the optical anisotropy in coke texture was implicated with CH4 evolution.
    (3) Coals with the large extent of thermal weight loss and the higher ratio of CH4 in pyrolytic gases showed generally excellent plasticity, although the coal gave cokes with higher porosity.
    Coking properties of coals were discussed from the view of the structural aspect. The quantification of thermal weight loss and the concentration of CH4 in pyrolytic gases were introduced as the criteria of coking characteristics.

Article Access Ranking

04 Aug. (Last 30 Days)

  1. Production and Technology of Iron and Steel in Japan during 2020 ISIJ International Vol.61(2021), No.6
  2. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  3. Effect of Ore Type and Gangue Content on Carburization and Melting Behavior of Carbon-Iron Ore Composite ISIJ International Vol.61(2021), No.6
  4. Formation and Evolution of Inclusions in High Chromium Steel ISIJ International Advance Publication
  5. Viscosity of Na–Si–O–N–F Melts: Mixing Effect of Oxygen, Nitrogen, and Fluorine ISIJ International Vol.60(2020), No.12
  6. Carbon Enrichment of Austenite during Ferrite-bainite Transformation in Low-alloy-steel Tetsu-to-Hagané Advance Publication
  7. Opportunity and Challenges of Iron Powders for Metal Injection Molding ISIJ International Vol.61(2021), No.7
  8. Behavior of Jet from Nozzle Set on Side Wall of Lance ISIJ International Vol.61(2021), No.6
  9. Comprehensive Research about Critical Interaction Region Named Cohesive Zone in Series of Dissected Blast Furnaces ISIJ International Vol.61(2021), No.6
  10. Numerical Simulation and Fatigue Properties of Laser Spot Weld-Bonding DP590 Dual-Phase Steel Joints MATERIALS TRANSACTIONS Vol.62(2021), No.8

Search Phrase Ranking

04 Aug. (Last 30 Days)

  1. blast furnace
  2. blast furnace productivity
  3. nozzle clogging
  4. high hole expansion ratio
  5. 34crmo4
  6. 34crmo4 pressure vessel
  7. blast furnace permeability
  8. carburization
  9. frp cylinder using cr−mo steel liner for storing high pressure hydrogen gas
  10. gas carburization