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. 75 (1996), No. 3

  • Correlation between Catalytic Activities and Surface Properties of Ni-Mo Sulfide Catalysts (I)

    pp. 150-158

    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.75.150

    Two series of Ni-Mo catalysts were prepared using an impregnation method. In each series Ni/ (Ni+Mo) ratio of the catalysts was varied, while a total met-al loading of Ni and Mo was kept constant (9.9 and 17wt% as MoO3). Sulfiding conditions were varied to give superior catalytic activities. After was sulfiding, model test reactions were carried out to evaluate hydrogenation (HY), hydrocracking (HC) and hydrodesulfurization (HDS) activities of the sulfide catalysts.
    The highest HY and HDS activities of the Ni-Mo catalysts were obtained when the Ni/ (Ni+Mo) ratios were 0.3-0.4 and 0.4-0.5 respectively, showing that HY and HDS active sites are different. HC activities decreased with increasing of Ni loading. Similar trends were observed when the total active metal loading was increased from 9.9 to 17wt% as MoO3. While considerable enhancements in HY, HC and HDS activities were observed on the catalysts with high metal loadings.
    XPS measurements revealed that atomic ratios of active metal sulfide
    {NiS/ (NiS+MoS2)}, which gave the highest HY and HDS activities, were different from those of Ni/ (Ni+Mo). This is mainly due to the different sulfiding behavior between Ni and Mo.
    HDS activities increased with increasing of metal sulfiding followed by saturation. However, the catalysts, sulfided at higher temperature, showed lower HDS activities, though metal sulfidings were promoted to some extent. This is probably due to sinter-ing of the active metals, resulting in the decrease of HDS active sites.
  • Estimation of Hydrogen Donor Ability based on the Analyses of Chemical Structure for Hydrogenated SRC II Distillates

    pp. 159-166

    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.75.159

    Proton Donor Quality Index (PDQI) was calculated from the chemical structural analyses by means of GC-LVEI MS for an SRC-II heavy distillate and twelve hydrogenated coal liquids derived from it. Evaluation of hydrogen donor ability of the liquids was attempted. PDQI increased with increasing severity of hydrogenation at the temperature less than 420°C, but PDQI decreased over 430°C. PDQI at 460°C became smaller than that of SRC-II heavy distillate.
    Liquefaction experiments with Akabira coal were carried out using the liquids as solvent. It was found that the coal conversions increased with the increase of PDQI of the solvents. Multi regression analyses between the coal conversions and PDQI of the chemical species in the solvents were performed, and the role of the species for the coal conversions was estimated. And then, a relationship between benzene soluble conversions and PDQIs fitted by those results in the experiments of Akabira coal liquefaction with recycling solvents was discussed.

Article Access Ranking

16 Apr. (Last 30 Days)

  1. Three-dimensional Investigations of Non-metallic Inclusions in Stainless Steels before and after Machining ISIJ International Advance Publication
  2. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  3. Influence of Ore Assimilation and Pore Formation during Sintering on Reduction Behavior of Sintered Ores Tetsu-to-Hagané Vol.107(2021), No.3
  4. Numerical Simulation of Flow, Heat, Solidification, Solute Transfer and Electromagnetic Field for Vertical Mold and Curved Mold of Billet ISIJ International Vol.61(2021), No.3
  5. Structural and Mechanical Characterizations of Top Dross in a Molten Zinc Bath ISIJ International Vol.61(2021), No.3
  6. Dissolution Behavior of Mg and Ca from Dolomite Refractory into Al-killed Molten Steel ISIJ International Advance Publication
  7. Deformation Behavior of Longitudinal Surface Flaws in Flat Rolling of Steel Wire ISIJ International Advance Publication
  8. Numerical Study into Gravity Separation of Phosphorus from BOS Slag during Solidification ISIJ International Vol.61(2021), No.3
  9. Prediction of Spatial Composition Distribution of Inclusions in the Continuous Casting Bloom of a Bearing Steel under Unsteady Casting ISIJ International Vol.61(2021), No.3
  10. Improvement in Reduction Behavior of Sintered Ores in a Blast Furnace through Injection of Reformed Coke Oven Gas Tetsu-to-Hagané Vol.107(2021), No.4

Search Phrase Ranking

16 Apr. (Last 30 Days)

  1. blast furnace
  2. coke oven gas injection
  3. tetsu-to-hagané
  4. blast furnace productivity
  5. slag
  6. blast furnace permeability
  7. continuous casting of electrical steel
  8. deoxygen in liquid iron
  9. electrical steel and continuous casting
  10. equilibrium of deoxygen in liquid iron