Abstract:
본 발명의 실시예에 따른 입자상물질 센서유닛은 배기가스가 지나는 배기라인, 및 상기 배기라인의 일측에 설치되어, 상기 배기가스에 포함된 전하를 띤 입자상물질이 근처를 지날 때, 상기 입자상물질에 의해서 전하가 발생되는 정전유도방식의 센서를 포함하고, 상기 센서에는, 상기 입자상물질과 인접한 전면에 형성되는 전극부가 형성된다. 상기 전극부는, 배기가스가 흐르는 방향과 교차하는 방향으로 돌출되는 고랑타입일 수 있다. 따라서,
Abstract:
본 발명은 산화 금속 지지체에 Rh을 담지한 촉매를 적용하여 이론 공연비(A/F=14.7) 이상의 연료가 희박한 배기가스 조건에서도 질소산화물을 암모니아로 전환시킬 수 있는 질소산화물의 암모니아 전환용 촉매 및 이의 제조방법을 제공하는데 그 목적이 있다. 상기와 같은 목적을 달성하기 위해 본 발명에 따른 질소산화물의 암모니아 전환용 촉매는 귀금속이 담지된 산화 금속 지지체를 포함하여, 이론 공연비(A/F=14.7) 이상의 연료가 희박한 배기가스 조건에서도 질소산화물을 암모니아로 전환시킬 수 있도록 된 것을 특징으로 한다.
Abstract:
A catalyst for purifying gas of an internal combustion device according to an embodiment of the present invention comprises a first catalyst having a carrier and a catalyst layer formed on the carrier wherein the catalyst layer comprises a first supporting body including alumina and Pd carried in the first supporting body; a second catalyst comprising a second supporting body including a ceria-zirconia mixed oxide and Rh carried in the second supporting body; and a third catalyst including a ceria-zirconia mixed oxide and Pd carried in the third supporting body. The catalyst for purifying gas of an internal combustion device according to an embodiment of the present invention has excellent catalyst activity at high temperature.
Abstract:
According to an embodiment of the present invention, a catalyst to purify gas of an internal combustion engine comprises a support and a catalytic layer formed on the support. The catalytic layer comprises: a first catalyst including a first scaffold having alumina and Pd supported on the first scaffold; and a second catalyst including a second scaffold having ceria zirconia composite oxide and Rh supported on the second scaffold. According to an embodiment of the present invention, the catalyst to purify gas of an internal combustion engine exhibits excellent catalytic activity at high temperatures.
Abstract:
The present invention relates to a perovskite catalyst for NO oxidation and a manufacturing method thereof and, in particular, to a perovskite catalyst for NO oxidation and a manufacturing method thereof capable of accelerating the usage of the perovskite catalyst for NO oxidation and reducing production costs owing to the excluded use of precious metals because the perovskite catalyst for NO oxidation can be used as a main component of an aftertreatment system for reducing NOx in exhaust gas of a leanburn gasoline engine or a diesel engine by producing the perovskite catalyst including silver (Ag) having the function of NO oxidation and excellent hydrothermal stability. The perovskite catalyst for NO oxidation is the core technology of an aftertreatment system for vehicle exhaust gas which can be used for an eco-friendly low-pollution vehicle to react to environmental restrictions in the WTO system. [Reference numerals] (AA) Pt-based commercial catalyst
Abstract:
PURPOSE: A reduction method of nitrogen oxide effectively returns nitrogen oxide to nitrogen and presents excellent nitrogen oxide reduction efficiency. CONSTITUTION: A reduction method of nitrogen oxide comprises a step of injecting a reducing agent including an amine compound and exhaust gas including nitrogen oxide to a catalyst system. The catalyst system includes a carrier alumina (Ag/Al2O3) catalyst. The amine compound is selected one from a group of monoethanolamine, ethylamine and their combination. [Reference numerals] (AA) Example 1 (Monoethanolamine); (BB) Example 1 (Ethylamine); (CC) Comparative example 1 (Ethanol + Ammonia); (DD) Comparative example 2 (Ethanol); (EE) Comparative example 3 (Ammonia)
Abstract translation:目的:氮氧化物的还原方法有效地将氮氧化物返回到氮气中,具有优异的氮氧化物还原效率。 构成:氮氧化物的还原方法包括将包含胺化合物的还原剂和包括氮氧化物的废气注入催化剂体系的步骤。 催化剂体系包括载体氧化铝(Ag / Al 2 O 3)催化剂。 胺化合物选自一种单乙醇胺,乙胺及其组合。 (AA)实施例1(单乙醇胺); (BB)实施例1(乙胺); (CC)比较例1(乙醇+氨); (DD)比较例2(乙醇); (EE)比较例3(氨)
Abstract:
PURPOSE: Zeolite catalyst for simultaneously removing carbon monoxide and nitrogen oxide, a manufacturing method thereof, and an exhaust purifier using the same are provided to simultaneously remove carbon monoxide and nitrogen oxide generated from the diesel particulate filter based on Ag and not have to supply urea which is extra reducing agent as carbon monoxide included in the exhaust gas is being used as reducing agent. CONSTITUTION: Zeolite catalyst for simultaneously removing carbon monoxide and nitrogen oxide comprises copper dipped to zeolite by exchanging ion. The amount of the copper is 0.2-2 weight% about the total weight of the catalyst. The manufacturing method of the zeolite catalyst comprises the following steps. A step of performing an ion exchange by mixing salt and copper salt solution; a step of filtering the output of ion exchange, washing and drying with distilled water; and a step of plasticizing dried outcome at 400-600°C for 4-6 hours. [Reference numerals] (AA) CO purification efficiency(%); (BB) Reaction temperature(°C)