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. 72 (1993), No. 2

  • Correlation between Redox Capacity and Activity for NO Conversion of Metal Contained Zeolite Catalysts

    pp. 98-103

    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.72.98

    Correlation between redox capacity and the activity for NO decomposition of various metallosilicates under excess oxygen conditions was studied. The redox capacity was measured by using thermogravimetric analyzer. The metallosilicates having a pentasil poreopening were prepared by the rapid crystallization method. Cu or Co ion-exchanged H-ZSM-5 (Cu/H-ZSM-5 or Co/H-ZSM-5) was used as the reference catalyst.
    Cu/H-ZSM-5 showed a good correlation between the redox capacity and the activity of NO decomposition, assuming redox reactions occurred between Cu and CuO. Co/H-ZSM-5 also showed a good correlation between them, but the redox reactions occurred between Co2O3 and Co3O4.
    On the other hand, in the case of metallosilicates, the active metal species were highly dispersed and tightly incorporated into the crystalline lattice, and therefore, the redox capacity did not exert explicitly, and reflecting this, the activity of NO decomposition was considerably low, however, stability of metallosilicates was higher than that of metal ion-exchanged ZSM-5, due to the small change in valency of metals in metallosilicates.
  • High Temperature Coal Char Gasification Characteristics and the Effect of Ash Melting

    pp. 104-110

    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.72.104

    Four kinds of coal chars were gasified in CO2/Ar atmosphere at a temperature of 1173K to 1673K. The reaction rate and ash morphology were investigated at various conversions.
    At a certain temperature Tx, the reaction rate fell more sharply during gasification than those at other temperatures. This suggests that highly viscous molten ash adhered to the char surface retarded the gasification reaction.
  • Study on a Solvent De-Ashing from Heavy Product of Brown Coal Liquefaction (I)

    pp. 111-117

    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.72.111

    A slovent de-ashing under high temperature and high pressure is adopted in the twostage brown coal liquefaction process to remove ash from the heavy product (coal liquid bottom, CLB) because of its high efficiency.
    Extract yield and residue properties are very important to develop the solvent deashing process because they affect strongly the CLB recovery and residue handling. Therefore, the effects of temperature and properties of the deashing solvent on the extract yield and residue properties were studied using toluene, cyclohexane and mixture of these as deashing solvents.
    About a half of preasphaltenes (BI-PS) in the CLBs used was extracted with toluene at 100-250°C. The residue consisted of fine perticles and was handled as a slurry. On the other hand, almost of the preasphaltenes was insoluble in cyclohexane at 250°C although extract yield increased with an increase in temperature. The residue obtained from cyclohexane extraction at above 170°C was sticky, and filtration of the residue was impossible because by plugging up the filter.
    From these results, it is found that toluene is a suitable solvent for the solvent deashing.

Article Access Ranking

23 May. (Last 30 Days)

  1. Influence of Thermomechanical Treatment on Delayed Fracture Property of Mo-Bearing Medium-Carbon Steel ISIJ International Vol.62(2022), No.2
  2. Comparison of Oxidation Behavior of Various Reactive Elements in Alloys during Electroslag Remelting (ESR) Process: An Overview ISIJ International Advance Publication
  3. Dissolution Kinetics of Synthetic FeCr2O4 in CaO–MgO–Al2O3–SiO2 Slag ISIJ International Vol.62(2022), No.4
  4. Fundamentals of Silico-Ferrite of Calcium and Aluminium (SFCA) and SFCA-I Iron Ore Sinter Bonding Phase Formation: Effects of MgO Source on Phase Formation during Heating ISIJ International Vol.62(2022), No.4
  5. Interaction Coefficients of Mo, B, Ni, Ti and Nb with Sn in Molten Fe–18mass%Cr Alloy ISIJ International Vol.62(2022), No.3
  6. Phenomenological Understanding about Melting Temperature of Multi-Component Oxides Tetsu-to-Hagané Vol.108(2022), No.4
  7. Ironmaking Using Municipal Solid Waste (MSW) as Reducing Agent: A Preliminary Investigation on MSW Decomposition and Ore Reduction Behavior ISIJ International Advance Publication
  8. A Novel Process for Separation of Magnetite and Phosphorous Phases from a CaO–SiO2–FeO–P2O5 Slag ISIJ International Advance Publication
  9. Removal of Inclusions using Swirling Flow in a Single-Strand Tundish ISIJ International Advance Publication
  10. Influence of Acicular Ferrite Microstructure on Toughness of Ti-Rare Earth Metal (REM)-Zr Killed Steel Tetsu-to-Hagané Vol.108(2022), No.5

Search Phrase Ranking

23 May. (Last 30 Days)

  1. blast furnace
  2. blast furnace permeability
  3. blast furnace productivity
  4. galvannealing
  5. jet impingement
  6. jet impingement + cooling + runout table
  7. nitrogen
  8. refractory
  9. steel
  10. valve spring steel