Research Outline

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Text Box: Environment is very important to every living being in every aspect of life. Our laboratory works to preserve the environment through development of new technologies in the following areas. EDevelopment of catalysts for environmental purification These researches are mainly concerning purifications of air, soil and water environments using knowledge in inorganic solid chemistry. EEffective utilization of inorganic waste resources These researches are mainly concerning the effective conversion methods of inorganic waste resources into useful tools for environmental purification.

 

Text Box: Development of catalysts for environmental purification Preservation of atmospheric environment 1. Selective reduction of NO using titania supported metal catalysts The removal of NO contained in exhaust from lean-burn engine of automotive is a necessity since it can cause environmental problems such as acid rain, etc. In this study, we develop new catalysts that are effective for the selective reduction of NO using hydrocarbons (HC-SCR). 2. Decomposition of N2O using titania supported metal catalysts N2O is a greenhouse gas that contributes to ozone layer depletion. To preserve atmospheric environment, N2O produced from human activity such as automotive combustion or adipic acid manufacturing must be decomposed before entering the atmosphere. In this study, we develop new catalysts that are effective for the decomposition of N2O. 3. Combustion of soot using natural zeolites Soot exhausted from diesel engine causes many kinds of respiratory diseases. In this study, we develop new catalysts that are effective for soot combustion using natural zeolites from Indonesia. 4. Hydrodesulfurization using chevrel phase sulfide catalyst The removal of sulfur from fuel has become an important issue due to increasing demand of sulfur-free fuel. In this study, we develop new catalysts for hydrodesulfurization using chevrel-phase sulfide. Preservation of water environment 5. Photodegradation of harmful organic compounds using TiO2 photocatalyst In this study, we develop new photocatalysts of carbon nanotube-TiO2 composite and metal co-doped TiO2 that can be used to degrade harmful organic compounds under visible light irradiation. 6. Removal of heavy metals using adsorbents (activated carbons or zeolites) In this study, we develop adsorbents for heavy metals in water using waste resources. Preservation of soil environment 7. Remediation of soil polluted by heavy metals In this study, we develop a relatively low-cost insitu treatment system for remediation of soil polluted by heavy metals.

 

Text Box: Effective utilization of inorganic waste resources Effective use of Bagasse Fly Ash 8. Synthesis of activated carbon from Bagasse Fly Ash The effective use of fly ash from combustion of Bagasse, a solid residue from sugar cane industry, is an important issue from environmental point of view. In this study, we convert carbon-rich Bagasse Fly Ash into several kinds of activated carbons using several different activation methods. Effective use of lake sludge 9. Synthesis of activated carbon or zeolite from lake sludge Lake sludge is dredged to prevent heavy sedimentation; however the effective use of dredged sludge still remains a problem. In this study, we convert lake sludge, that contains many components such as carbon, silica, alumina, into activated carbons or zeolites. Effective use of metal-rich waste liquid 10. Development of desulfurizing agent from metal-rich waste liquid In this study, we synthesize metal hydroxide desulfurizing agents using waste liquid containing iron and copper.