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    NOBLE METAL-MOLECULAR SIEVE CATALYSTS
    4.
    发明申请
    NOBLE METAL-MOLECULAR SIEVE CATALYSTS 审中-公开
    NOBLE金属分子筛催化剂

    公开(公告)号：US20150157982A1

    公开(公告)日：2015-06-11

    申请号：US14563382

    申请日：2014-12-08

    申请人： Johnson Matthey Public Limited Company

    发明人： Raj Rao RAJARAM ,  Fiona-Mairead MCKENNA ,  Hai-Ying CHEN ,  Dongxia LIU

    IPC分类号： B01D53/94 ,  B01J29/068 ,  B01J29/80

    CPC分类号： B01D53/9486 ,  B01D53/9459 ,  B01D53/9481 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/50 ,  B01J29/068 ,  B01J29/44 ,  B01J29/7415 ,  B01J29/743 ,  B01J29/80 ,  B01J37/0201 ,  B01J37/0244 ,  B01J37/0246 ,  Y02T10/22

    摘要： Exhaust gas catalysts are disclosed. One exhaust gas catalyst comprises a noble metal and a molecular sieve, and has an infrared spectrum having a characteristic absorption peak from 750 cm−1 to 1050 cm−1 in addition to the absorption peaks for the molecular sieve itself. The exhaust gas catalyst also comprises a noble metal and a molecular sieve, having greater than 5 percent of the noble metal amount located inside pores of the molecular sieve. The exhaust gas catalyst also comprises a first and second molecular sieve catalyst. The first molecular sieve catalyst comprises a first noble metal and a first molecular sieve, and the second molecular sieve catalyst comprises a second noble metal and a second molecular sieve. The first and second molecular sieves are different. The invention also includes exhaust systems comprising the exhaust gas catalysts, and a method for treating exhaust gas utilizing the exhaust gas catalysts.

    摘要翻译： 公开了废气催化剂。 一种废气催化剂包括贵金属和分子筛，除了分子筛本身的吸收峰之外，还具有从750cm -1至1050cm -1的特征吸收峰的红外光谱。 废气催化剂还包含贵金属和分子筛，其具有位于分子筛孔内的贵金属量的5％以上。 废气催化剂还包含第一和第二分子筛催化剂。 第一分子筛催化剂包括第一贵金属和第一分子筛，第二分子筛催化剂包含第二贵金属和第二分子筛。 第一和第二分子筛是不同的。 本发明还包括包括废气催化剂的排气系统，以及利用废气催化剂处理废气的方法。

    SINGLE BRICK SCR/ASC/PNA/DOC CLOSE-COUPLED CATALYST
    6.
    发明申请
    SINGLE BRICK SCR/ASC/PNA/DOC CLOSE-COUPLED CATALYST 审中-公开

    公开(公告)号：US20190001268A1

    公开(公告)日：2019-01-03

    申请号：US15939369

    申请日：2018-03-29

    申请人： JOHNSON MATTHEY PUBLIC LIMITED COMPANY

    发明人： Hai-Ying CHEN ,  Joseph Michael FEDEYKO ,  Dongxia LIU ,  Jing LU

    IPC分类号： B01D53/94

    摘要： A catalyst article including a substrate with an inlet side and an outlet side, a first zone and a second zone, where the first zone includes a passive NOx adsorber (PNA), and an ammonia slip catalyst (ASC) comprising a platinum group metal on a support and a first SCR catalyst; where the second zone includes a catalyst selected from the group consisting of a diesel oxidation catalyst (DOC) and a diesel exotherm catalyst (DEC); and where the first zone is located upstream of the second zone. The first zone may include a bottom layer with a blend of: (1) the platinum group metal on a support and (2) the first SCR catalyst; and a top layer with a second SCR catalyst, the top layer located over the bottom layer.