• Title, Summary, Keyword: 피셔-트롭시

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Development of Fe/$Al_2O_3$ Composite Granules and Activation Conditions for Fischer-Tropsch Synthesis (구형 철-알루미나 입자 제조 및 피셔-트롭시 반응을 위안 전처리 조건 확립)

  • Yoo, Kye-Sang;Lee, Dong-Joon;Jung, Kwang-Deog
    • Transactions of the Korean hydrogen and new energy society
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    • v.19 no.6
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    • pp.545-551
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    • 2008
  • Fe/$Al_2O_3$ composite granules were prepared by combining sol-gel/oil drop method. The shape of granules were mainly determined by composition and concentration of aluminum precursor. The composite granule with the lowest aluminum concentration was synthesized with 0.75M boehmite solution. The prepared granules were tested as a catalyst in the plug-flow reactor for Fischer-Tropsch synthesis. Before the reaction, catalysts were activated by hydrogen reduction and synthesis gas treatment. The activation conditions and aluminum concentration have affected catalytic performance significantly.

Preparation of Fe/$Al_2O_3$ Granules for Conversion of Syngas to Light Olefins by Fischer-Tropsch Reaction (합성가스에서 경질올레핀 제조를 위한 피셔-트롭시 반응용 구형 철-알루미나 촉매 합성)

  • Lee, Dong-Joon;Jung, Kwang-Deog;Yoo, Kye-Sang
    • Applied Chemistry for Engineering
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    • v.21 no.3
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    • pp.333-336
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    • 2010
  • Fe/$Al_2O_3$ granules with various compositions were prepared by combining sol-gel with oil drop method for Fishcer-Tropsh reaction to produce light olefin from synthesis gas. The granules was characterized and employed as a catalyst in the reaction. The surface area of granules was decreased with increasing Fe concentration. Especially, granule with 1.5 of Al/Fe ratios showed the highest CO conversion. However, the olefin selectivity was hardly affected by Al/Fe ratio. K concentration of granule gave a significant effect on catalytic performance. Initial CO conversion and olefin selectivity were increased with K concentration. However, the catalyst with higher K concentration was deactivated rapidly.

A Study on Fuel Quality Characteristics of F-T Diesel for Production of BTL Diesel (BTL 디젤 생산을 위한 F-T 디젤의 연료적 특성 연구)

  • Kim, Jae-Kon;Jeon, Cheol-Hwan;Yim, Eui-Soon;Jung, Choong-Sub;Lee, Sang-Bong;Lee, Yun-Je;Kang, Myung-Jin
    • Journal of the Korean Applied Science and Technology
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    • v.29 no.3
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    • pp.450-458
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    • 2012
  • In order to reduce the effects of greenhouse gas (GHG) emissions, the South Korean government has announced a special platform of technologies as part of an effort to minimize global climate change. To further this effort, the Korean government has pledged to increase low-carbon and carbon neutral resources for biofuel derived from biomass to replace fossil and to decrease levels of carbon dioxide. In general, second generation biofuel produced form woody biomass is expected to be an effective avenue for reducing fossil fuel consumption and greenhouse gas (GHG) emissions in road transport. It is important that under the new Korean initiative, pilot scale studies evolve practices to produce biomass-to-liquid (BTL) fuel. This study reports the quality characteristics of F-T(Fischer-Tropsch) diesel for production of BTL fuel. Synthetic F-Tdiesel fuel can be used in automotive diesel engines, pure or blended with automotive diesel, due to its similar physical properties to diesel. F-T diesel fuel was synthesized by Fischer-Tropsch (F-T) process with syngas($H_2$/CO), Fe basedcatalyst in low temperature condition($240^{\circ}C$). Synthetic F-T diesel with diesel compositions after distillation process is consisted of $C_{12}{\sim}C_{23+}$ mixture as a kerosine, diesel compositions of n-paraffin and iso-paraffin compounds. Synthetic F-T diesel investigated a very high cetane number, low aromatic composition and sulfur free level compared to automotive diesel. Synthetic F-T diesel also show The wear scar of synthetic F-T diesel show poor lubricity due to low content of sulfur and aromatic compounds compared to automotive diesel.