Welcome to Kyoung-Su Ha's Lab !

We are recruiting student candidates for integrated (master & doctoral), master, and doctoral courses. In addition, we need a qualified researcher in postdoctoral position.

(1) 석박통합과정, 석사과정, 박사과정 학생들도 선발중이니 지도교수나 랩멤버를 통해 지원정보를 얻기 바랍니다.

(2) 훌륭한 포닥 연구원을 모집합니다.

Welcome !

Our main focuses lie on the catalytic issues involved with the production of valuable chemicals from gases. Natural gas including shale gas, greenhouse gas, off- gases and byproduct gases from steelmakers and chemical industry are regarded as important and abundant reactants. Methane, one of the main components and also a greenhouse gas, can be directly or indirectly converted into final chemicals such as olefins, aromatics, alcohols, synthetic fuels, electricity and so on. These kinds of technologies are called C1 gas refinery and we are carrying out the research project entitled "Development of catalyst technology for methane-to-aromatics via light hydrocarbons". In the first step of this technology, we conduct a methane activation to produce C2 chemicals such as acetylene, ethylene, and ethane by using a dielectric barrier discharge plasma bed. This plasma bed is characterized by low temperature and ambient pressure. Through this method, methane conversion ranges from 30 to 50 % and the selectivity of C2 chemicals is observed over 60%. With these intermediates of C2 chemicals, we further convert them into aromatic compounds or other valuable compounds by utilizing metal-zeolite hybrid or hierarchical zeolite catalysts. This is the brief introduction to our C1 refinery project.

In addition, we are also carrying out an indirect conversion of methane, which is characterized by generation of synthesis gas and additional successive synthesis step(s). One of the most important technologies is a gas-to-liquids, GTL. The first synthesis step of GTL process is called reforming, by which synthesis gas, whose components are mostly hydrogen and carbon monoxide, is generated. Partial oxidation, steam reforming, dry reforming are 3 representative reforming technologies. Fischer-Tropsch synthesis is the second step, where monomeric units (-CH2-) are formed and they polymerize to form mostly long chain hydrocarbons, and there are some olefins and alcohols as well. In this step, highly porous material-supported cobalt- or iron-based catalysts are widely used. For better dispersion and reduction properties, we are still developing new nanostructured catalysts optimized for a novel GTL process.

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