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    • 9. 发明授权
    • Automobile exhaust gas purification catalyst and method of production of same
    • 汽车废气净化催化剂及其生产方法相同
    • US08288310B2
    • 2012-10-16
    • US12513171
    • 2007-11-01
    • Shinichi TakeshimaAkio Koyama
    • Shinichi TakeshimaAkio Koyama
    • B01J23/00B01J21/00
    • B01D53/945B01D2255/1025B01D2255/20715B01J21/066B01J23/464B01J35/006B01J35/1014B01J37/0207B01J37/0211B01J37/08Y02A50/2324Y02T10/22
    • An automobile exhaust gas purification catalyst comprised of a support mainly comprised of ZrO2 in which Rh is supported as a catalyst metal preventing sintering of the support, raising the supporting efficiency, and raising the low temperature activity and a method of production of the same are provided. An automobile exhaust gas purification catalyst comprised of a support mainly comprised of ZrO2, sintered under firing conditions where the as fired ZrO2 will substantially not be charged in a catalyst metal supporting treatment solution, in which Rh is supported as a catalyst metal in a particle state. The method of production includes a step of charging the support mainly comprised of ZrO2 fired under the above firing conditions by applying at least one treatment of an acid treatment and a base treatment and a step of dipping the charged state support in the catalyst supporting treatment solution including a colloid of Rh as the catalyst metal to make the Rh colloid be adsorbed on the support.
    • 本发明提供一种汽车排气净化催化剂,其特征在于,主要由作为催化剂金属负载的作为催化剂金属的ZrO 2的载体,能够防止烧结烧结,提高支持效率,提高低温活性的载体及其制造方法 。 一种汽车废气净化催化剂,由主要由ZrO 2组成的载体组成,在烧成条件下烧结ZrO 2基本上不会在催化剂金属负载处理溶液中充电,其中Rh作为催化剂金属以粒子状态负载 。 该制造方法包括以下步骤:在上述烧成条件下,通过进行至少一种酸处理和碱处理的处理,以及将带电状态的载体浸渍在催化剂负载处理液中的步骤, 包括Rh的胶体作为催化剂金属,使Rh胶体吸附在载体上。