会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明授权
    • Exhaust gas purifying catalyst and process for producing the same
    • 废气净化催化剂及其制造方法
    • US4843056A
    • 1989-06-27
    • US164237
    • 1988-03-04
    • Shinichi MatsumotoNaoto MiyoshiHideaki MurakiHideo SobukawaMasayuki FukuiMareo KimuraHirofumi Shinjoh
    • Shinichi MatsumotoNaoto MiyoshiHideaki MurakiHideo SobukawaMasayuki FukuiMareo KimuraHirofumi Shinjoh
    • B01D53/94B01J23/56B01J23/63
    • B01D53/945B01J23/63Y02T10/22
    • An exhaust gas purifying catalyst for oxidizing HC and CO and for reducing NOx is provided, which comprises at least one oxide of rare earth element, rhodium, and at least one of platinum and palladium loaded on alumina grains. The major amount of rhodium is dispersed on the oxide of rare earth element. Thus, the rhodium solidification into the alumina grains is prevented. Further, when cerium oxide accompanying lanthanum oxide, neodymium oxide or a mixture thereof is used as the oxide of rare earth element, the sintering of cerium oxide or palladium at a high temperature is suppressed since it forms a complex oxide with lanthanum oxide, neodymium oxide or a mixture thereof. Additionally, when stabilized alumina grains in which a rare earth element and an alkali earth element are present in a solid solution state are used, the deterioration of NOx purifying activity of the catalyst at a high temperature is suppressed. The exhaust gas purifying catalyst of this invention has high durability as well as high activity at a high temperature.
    • 提供一种用于氧化HC和CO并用于还原NOx的废气净化催化剂,其包含至少一种稀土元素氧化物,铑,以及负载在氧化铝颗粒上的铂和钯中的至少一种。 铑的主要量分散在稀土元素的氧化物上。 因此,防止了铑固化成氧化铝颗粒。 此外,当使用伴随氧化镧,氧化钕或其混合物的氧化铈作为稀土元素的氧化物时,氧化铈或钯在高温下的烧结被抑制,因为它与氧化镧,氧化钕形成复合氧化物 或其混合物。 此外,当使用其中以固溶状态存在稀土元素和碱土金属元素的稳定的氧化铝颗粒时,抑制了催化剂在高温下的NOx净化活性的劣化。 本发明的废气净化催化剂在高温下具有高耐久性和高活性。
    • 7. 发明申请
    • EXHAUST GAS-PURIFYING CATALYST
    • 排气净化催化剂
    • US20110207601A1
    • 2011-08-25
    • US13092022
    • 2011-04-21
    • Satoshi MATSUEDAMareo KimuraKeiichi Narita
    • Satoshi MATSUEDAMareo KimuraKeiichi Narita
    • B01J23/10
    • B01J23/63B01D53/945B01D2255/204B01D2255/2047B01D2255/206B01D2255/402B01J21/005Y02T10/22
    • An object of the present invention is to provide an exhaust gas-purifying catalyst containing a composite oxide catalyst and a refractory support and being less prone to cause a decrease in its activity even when used at high temperatures in an atmosphere with high oxygen concentration. An exhaust gas-purifying catalyst includes a composite oxide catalyst containing rare-earth element, alkaline-earth element and precious metal, a part of the rare-earth element and a part of the alkaline-earth element forming composite oxide, and the composite oxide and a part of the precious metal forming solid solution, and a refractory support supporting the composite oxide catalyst and including at least one of a first composite oxide represented by a general formula AB2O4, a second composite oxide having perovskite structure represented by a general formula LMO3, and a third composite oxide having pyrochlore structure represented by a general formula X2Y2O7.
    • 本发明的目的是提供一种含有复合氧化物催化剂和耐火载体的废气净化催化剂,即使在高氧浓度的气氛中在高温下使用也不易引起其活性降低。 废气净化催化剂包括含有稀土元素,碱土金属元素和贵金属的复合氧化物催化剂,稀土元素的一部分和形成碱土金属元素的复合氧化物的一部分,复合氧化物 和形成贵金属的固体溶液的一部分,以及负载该复合氧化物催化剂的耐火载体,并且包括由通式AB 2 O 4表示的第一复合氧化物中的至少一种,具有由通式LMO3表示的钙钛矿结构的第二复合氧化物 ,以及具有由通式X2Y2O7表示的烧绿石结构的第三复合氧化物。