Coating process of Zero-PGM catalysts and methods thereof
    51.
    发明授权
    Coating process of Zero-PGM catalysts and methods thereof 有权
    零P​​GM催化剂的涂布方法及其方法

    公开(公告)号:US09227177B2

    公开(公告)日:2016-01-05

    申请号:US14183056

    申请日:2014-02-18

    申请人: Zahra Nazarpoor

    发明人: Zahra Nazarpoor

    摘要: Variations of coating processes of ZPGM catalyst materials for TWC applications are disclosed. The disclosed coating processes for ZPGM materials are enabled in the preparation of ZPGM catalyst samples according to a plurality of catalyst configurations, which may include washcoat and an overcoat layer with or without an impregnation layer, including Cu—Mn spinel and doped Zirconia support oxide, prepared according to variations of disclosed coating processes. Activity measurements under isothermal steady state sweep test condition are considered under lean condition and rich condition close to stoichiometric condition to analyze the influence of disclosed coating processes on TWC performance of ZPGM catalysts. Different coating processes may substantially increase TWC activity, providing improved levels of NO, CO, and HC conversions and cost effective manufacturing solutions.

    摘要翻译: 公开了用于TWC应用的ZPGM催化剂材料的涂覆方法的变化。 所公开的ZPGM材料的涂覆方法可用于根据多种催化剂构型制备ZPGM催化剂样品,其可以包括修补基面涂层和具有或不具有浸渍层(包括Cu-Mn尖晶石和掺杂的氧化锆载体氧化物)的外涂层, 根据公开的涂覆方法的变化制备。 在等温稳态扫描试验条件下的活性测量在稀薄条件和富含条件下接近化学计量条件下进行分析,以分析所公开涂层方法对ZPGM催化剂TWC性能的影响。 不同的涂布方法可以显着提高TWC活性,提供改进的NO,CO和HC转化水平以及具有成本效益的制造方案。

    Exhaust gas purifying catalyst
    53.
    发明授权
    Exhaust gas purifying catalyst 有权
    废气净化催化剂

    公开(公告)号:US09061266B2

    公开(公告)日:2015-06-23

    申请号:US14343586

    申请日:2012-09-25

    摘要: The invention discloses a catalyst for purifying exhaust gas apparatus having a Three-way Catalyst (TWC) superior in purification performance of, particularly, NOx, among carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx), in exhaust gas discharged from a gasoline automobile. It is provided by a catalyst for purifying exhaust gas containing a Rhodium (Rh)-loaded porous inorganic oxide and barium sulfate (BaSO4), with loaded or not-loaded onto alumina. At least a part of Rh is present independently from Ba inside a catalyst layer, and Rh—Ba deviation rate determined from EPMA analysis is 10% to 80%. It is preferable that loaded amount of Rhodium is 0.05 g/L to 2.0 g/L, and amount of barium sulfate is 0.5 g/L to 25 g/L and 0.5 g/L to 15 g/L, in the case of being loaded or not-loaded onto alumina, respectively.

    摘要翻译: 本发明公开了一种用于净化废气装置的催化剂,其具有在排气中的一氧化碳(CO),烃(HC)和氮氧化物(NOx))中的一氧化碳(CO),氮氧化物(NOx)的净化性能优异的三元催化剂(TWC) 从汽油汽车排放的气体。 由用于净化含有铑(Rh)负载的多孔无机氧化物和硫酸钡(BaSO 4)的废气的催化剂提供,其负载或未负载到氧化铝上。 Rh的至少一部分与催化剂层内的Ba独立存在,由EPMA分析确定的Rh-Ba偏差为10〜80%。 铑的负载量优选为0.05g / L〜2.0g / L,硫酸钡的量为0.5g / L〜25g / L,0.5g / L〜15g / L, 分别装载或未装载到氧化铝上。