• Journal of the Korean Society of Propulsion Engineers
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• v.15 no.3
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• pp.15-21
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• 2011

With petroleum reserves dwindling, interest has been increasing worldwide in Fischer-Tropsch synthesis (FT) as a method of producing synthetic liquid fuels and chemicals from coal, natural gas or biomass. In general, FT synthesis is operated through the gas phase fixed-bed reaction system. Recently, there are lots of study in supercritical fluid due to unique characteristics such as the quick diffusion of reactant gas, effective removal of reaction heat, and the in-situ extraction of high molecular weight hydrocarbon, such as wax. In this study, our major aim is to obtain a deeper insight into the effect of the type of support on the reaction performance over a supported cobalt catalyst in a fixed bed reactor.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2010.11a
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• pp.658-663
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• 2010

With petroleum reserves dwindling, interest has been increasing worldwide in Fischer-Tropsch synthesis (FT) as a method of producing synthetic liquid fuels and chemicals from coal, natural gas or biomass. In general, FT synthesis is operated through the gas phase fixed-bed reaction system. Recently, there are lots of study in supercritical fluid due to unique characteristics such as the quick diffusion of reactant gas, effective removal of reaction heat, and the in-situ extraction of high molecular weight hydrocarbon, such as wax. In this study, our major aim is to obtain a deeper insight into the effect of the type of support on the reaction performance over a supported cobalt catalyst in a fixed bed reactor.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2011.11a
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• pp.717-720
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• 2011

Due to the depletion of fossil fuel, high oil price and global warming issue by green house gas such as CO2, clean synthetic fuel technologies using biomass, especially GTL(Gas To Liquid) technology, have been greatly attracted. This paper has examined and compared the worldwide technologies trend of natural gas reforming reaction, F-T(Fisher-Tropsch) synthesis and upgrading process which are three backbones of GTL technology.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2010.11a
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• pp.307-310
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• 2010

The research for production of jet fuel from petroleum displacement resources such as bio-mass, coal, natural gas mainly consists of three sub-research areas; the fisrt step is the pretreatment for producing a synthetic gas, and the next step is the Fischer-Trophsh reaction process for making hydrocarbons. The last is the upgrading technology for the hydrocarbons to fit a jet fuel specification via cracking and isomerization reactions. This talk presents reaserch trends and main technologies for production of jet fuel derived from petroleum displacement resources.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2010.11a
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• pp.795-796
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• 2010

Interest has been increasing worldwide in Fischer-Tropsch synthesis (F-T) as a method of producing synthetic liquid fuels from biomass. Hydroisomerization of $C_7-C_{15}$ paraffins applies to production of diesel fuel with high cetane number and improved cold flow properties, such as viscosity, pour point and freezing point. The commercial products such as fuel jet produced from F-T synthesis should have low freezing and pour points. In this study, our major aim is to develop a catalyst for hydroisomerization of synthesis-oil for bio-jet fuel. Effects of zeolites and platinum loading on hydroisomerization of dodecane were investigated as a model reaction in a batch reactor.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2010.11a
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• pp.793-794
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• 2010

Fischer-Tropsch(F-T) reaction, in which syngas($H_2+CO$) is transformed into liquid fuels, has attracted much attention recently due to the limited reservoir of petroleum. The formed F-T wax can be converted into various liquid fuels, such as gasoline, diesel, jet fuel, lubricants, etc., through the hydrocracking reaction. To carry out the hydrocracking reaction, the bifunctional catalyst is required, in which hydrogenation/dehydrogenation occurs over metal and cracking proceeds over solid acid sites. In this contribution, we review the reported hydrocracking catalysts and summarize some process variables (feed compositions, reaction temperature and reaction pressure) for each catalyst.