Abstract: An embodiment ceria-alumina support (CeO2—Al2O3 support) includes a nano-ceria having a shape of a polygonal bipyramid or a truncated polygonal bipyramid supported on alumina. An embodiment noble metal catalyst for treating exhaust gas includes a noble metal deposited on a ceria-alumina support (CeO2—Al2O3 support) that includes a nano-ceria having a shape of a polygonal bipyramid or a truncated polygonal bipyramid supported on alumina. An embodiment method for affecting resistance to sulfur-poisoning of a noble metal catalyst through structural transformation of nano-ceria supported on alumina includes performing a hydrothermal treatment of ceria supported on ?-alumina.

Abstract: An embodiment ceria-alumina support (CeO2—Al2O3 support) includes a nano-ceria having a shape of a polygonal bipyramid or a truncated polygonal bipyramid supported on alumina. An embodiment noble metal catalyst for treating exhaust gas includes a noble metal deposited on a ceria-alumina support (CeO2—Al2O3 support) that includes a nano-ceria having a shape of a polygonal bipyramid or a truncated polygonal bipyramid supported on alumina. An embodiment method for affecting resistance to sulfur-poisoning of a noble metal catalyst through structural transformation of nano-ceria supported on alumina includes performing a hydrothermal treatment of ceria supported on ?-alumina.

Abstract: Disclosed is a catalyst for removing saturated hydrocarbon including an acidic support including porous alumina (Al2O3) and having higher acidity than alumina, and an active metal including platinum (Pt) and supported on the acidic support.

Abstract: A device for purifying exhaust gas provided to purify exhaust gas in an engine, may include an exhaust line through which exhaust gas discharged from the engine passes, a NOx storage catalyst that is installed in the exhaust line to absorb a nitrogen oxide discharged from the exhaust gas, and detach an absorbed nitrogen oxide when a temperature of a catalyst is higher than a predetermined value, and a three way catalyst (TWC) arranged in rear of the NOx storage catalyst for reducing the nitrogen oxide detached from the NOx storage catalyst, wherein the NOx storage catalyst includes an LTA zeolite catalyst.

Abstract: An apparatus and a method of purifying exhaust gas are provided. The apparatus for purifying exhaust gas may include: an exhaust pipe connected to an exhaust manifold of an engine; a catalytic converter mounted on the exhaust pipe and including a hydrocarbon trap and a three-way catalyst; an exhaust gas recirculation (EGR) pipe connecting downstream of the catalytic converter to an intake manifold of the engine; an EGR valve mounted on the EGR pipe; a first oxygen sensor mounted on the exhaust pipe downstream of the catalytic converter; a second oxygen sensor mounted on the exhaust pipe upstream of the catalytic converter; and a controller controlling an operation of the EGR valve.

Abstract: A device for purifying exhaust gas provided to purify exhaust gas in an engine, may include an exhaust line through which exhaust gas discharged from the engine passes, a NOx storage catalyst that is installed in the exhaust line to absorb a nitrogen oxide discharged from the exhaust gas, and detach an absorbed nitrogen oxide when a temperature of a catalyst is higher than a predetermined value, and a three way catalyst (TWC) arranged in rear of the NOx storage catalyst for reducing the nitrogen oxide detached from the NOx storage catalyst, wherein the NOx storage catalyst includes an LTA zeolite catalyst.

Abstract: An apparatus and a method of purifying exhaust gas are provided. The apparatus for purifying exhaust gas may include: an exhaust pipe connected to an exhaust manifold of an engine; a catalytic converter mounted on the exhaust pipe and including a hydrocarbon trap and a three-way catalyst; an exhaust gas recirculation (EGR) pipe connecting downstream of the catalytic converter to an intake manifold of the engine; an EGR valve mounted on the EGR pipe; a first oxygen sensor mounted on the exhaust pipe downstream of the catalytic converter; a second oxygen sensor mounted on the exhaust pipe upstream of the catalytic converter; and a controller controlling an operation of the EGR valve.

Abstract: Disclosed is a gas purifying catalyst for an internal combustion engine comprising: a carrier and a catalyst layer formed on the carrier, the catalyst layer including a first catalyst, a second catalyst and a third catalyst. The first catalyst comprises Pd supported in a first support, the first support comprising alumina. The second catalyst comprises Rh supported in a second support, the second support comprising a complex oxide of ceria-zirconia. The third catalyst comprising Pd supported in a third support, the third support comprising a complex oxide of ceria-zirconia.

Abstract: Disclosed is a gas purifying catalyst for an internal combustion engine comprising: a carrier and a catalyst layer formed on the carrier, the catalyst layer including a first catalyst, a second catalyst and a third catalyst. The first catalyst comprises Pd supported in a first support, the first support comprising alumina. The second catalyst comprises Rh supported in a second support, the second support comprising a complex oxide of ceria-zirconia. The third catalyst comprising Pd supported in a third support, the third support comprising a complex oxide of ceria-zirconia.

Abstract: A gas purifying catalyst for an internal combustion engine may include a carrier, and a catalyst layer formed on the carrier, wherein the catalyst layer has a first catalyst including a first support including alumina and Pd supported in the first support, and a second catalyst including a second support including complex oxide of ceria-zirconia and Rh supported in the second support.