Korea Institute of Science and Technology

Kist Corp.

Heon-Phil Ha

Ji-Young Byun

Do-Hyung Kim

Jang-Won Kim

Hyun-Kwang Seok

Kyung-Tae Hong

Kyoung-Tae Kim

Yoon-Bae Kim

Dow-Bin Hyun

Jung-Man Doh

Soon-Hyo Chung

Young-Joo Oh

The present invention provides for catalysts for selective catalytic reduction of nitrogen oxides. The catalysts comprise metal oxide supporters, vanadium, an active material, and antimony, a promoter that acts as a catalyst for reduction of nitrogen oxides, and at the same time, can promote higher sulfur poisoning resistance and low temperature catalytic activity. The amount of antimony of the catalysts is preferably 0.5-7 wt. %.

SCR catalyst for removal of nitrogen oxides

The present invention relates to a method for manufacturing a Fe&#x2014;Si alloy powder. A method for manufacturing a Fe&#x2014;Si alloy powder includes: providing a mixture of an AlOpowder, an active agent powder, a Si powder, and a Fe powder; heating the mixture with a temperature of 700&#xb0; C. to 1200&#xb0; C. in the hydrogen atomosphere; magnetically separating a Fe-containing material from the mixture; and separating a Fe&#x2014;Si alloy powder by soaking the Fe-containing material in an alkali solution. In the heating of the mixture, the Si powder is deposited on the surface of the Fe powder and diffused into the Fe powder.

Method for manufacturing Fe&#x2014;Si alloy powders

The present invention relates to a composite layer including a metal and inorganic powders, and a method for manufacturing the same. The method for manufacturing a composite layer including a metal and inorganic powders includes step of preparing an electrolyte which includes nickel sulfamate [Ni(NHSO)] at 50.0 g/l&#x2dc;300.0 g/l, boric acid at 10.0 g/l&#x2dc;20.0 g/l, nickel chloride (NiCl) at 1.0 g/l&#x2dc;10.0 g/l, coumarin (CHO) at 0.02 g/l&#x2dc;0.5 g/l, sodium dodecyl sulfate [CH&#x2014;(CH)&#x2014;OSONa] at 4.0 g/l&#x2dc;60.0 g/l, sulfuric acid at 0.0 ml/l&#x2dc;150.0 ml/l, one or more inorganic powders selected from the group of alumina (AlO) and silicon carbide (SiC) at 20.0 g/l&#x2dc;70.0 g/l, and the remainder being distilled water. A basic metal to be coated with the composite metal is dipped into the electrolyte, and power is applied to the basic metal to electroplate the basic metal with the electrolyte to form a composite layer on the basic metal.

Composite layer including metal and inorganic powders and method for manufacturing the same

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Seoul, South Korea

Heon-Phil Ha