CATALYST FOR PURIFYING EXHAUST GAS
    42.
    发明申请

    公开(公告)号:US20220105494A1

    公开(公告)日:2022-04-07

    申请号:US17425099

    申请日:2020-01-20

    摘要: An exhaust gas purification catalyst is provided which can be more enhanced in NOx purification performance. An exhaust gas purification catalyst including a substrate, a NOx storage layer located over the substrate, an oxidation catalyst layer located over a part of the NOx storage layer, the part being located upstream in an exhaust gas flow direction, and a reduction catalyst layer located over a part of the NOx storage layer, the part being located downstream in an exhaust gas flow direction, wherein the NOx storage layer includes an oxidation catalyst including Pd or Pd and Pt, and a NOx storage material including at least one element selected from the group consisting of an alkali metal, an alkali earth metal and a rare-earth element, the oxidation catalyst layer includes an oxidation catalyst including Pt or Pt and Pd, the reduction catalyst layer includes a reduction catalyst including Rh, and a total content rate (mol %) of Pt and Pd based on a total content rate (100 mol %) of metal element(s) in the oxidation catalyst layer is higher than a total content rate (mol %) of Pt and Pd based on a total content rate (100 mol %) of metal elements in the NOx storage layer.

    METHOD FOR PRODUCING FLUOROVINYL AMIDE COMPOUND

    公开(公告)号:US20220055990A1

    公开(公告)日:2022-02-24

    申请号:US17299602

    申请日:2019-12-05

    摘要: An object of this disclosure provides a novel method for producing a fluorovinyl amide compound and the like. The object is achieved by a method for producing a compound represented by formula (1): wherein Rf is —F or fluoroalkyl, Ra1 is —H or an organic group, and Ra2 is —H or an organic group, or (i) Ra1 and Ra2, (ii) Ra1 and Rf, or (iii) Rf and Ra2, may be linked to each other, Rb1 is —H or an organic group, and Rb2 is —H or an organic group, or Rb1 and Rb2 may be linked together with their adjacent atoms to form a nitrogen-containing ring optionally having one or more substituents, the method comprising step A of reacting a compound represented by formula (2): wherein Rx is a leaving group, with a compound represented by formula (3) or a salt thereof: in the presence of a transition metal catalyst.