公开(公告)号：US20220241761A1

公开(公告)日：2022-08-04

申请号：US17611403

申请日：2020-05-20

Applicant: BASF CORPORATION

Inventor： Jeffrey B. Hoke ,  Gerd Grubert ,  Alfred Punke

IPC: B01J29/67 ,  B01J35/04 ,  B01J21/04 ,  B01J23/44 ,  B01J29/76 ,  B01J23/34 ,  F01N3/20 ,  F01N3/10 ,  F01N3/28 ,  B01D53/94

Abstract: The present disclosure is directed to an emission treatment system for oxidation of hydrocarbons and carbon monoxide and for NOx abatement in an exhaust stream of a lean burn engine, the emission treatment system including a low-temperature NOx adsorber (LT-NA) that includes a molecular sieve impregnated with at least one PGM component positioned in fluid communication with the exhaust stream; and an oxidation catalyst that includes a refractory metal oxide support containing manganese impregnated with platinum positioned in fluid communication with the exhaust stream, each of the LT-NA and the oxidation catalyst being disposed on a substrate. The invention provides a catalyst article combining an oxidation catalyst with a LT-NA and a related method of treatment of an exhaust gas.

公开(公告)号：US20130084222A1

公开(公告)日：2013-04-04

申请号：US13624524

申请日：2012-09-21

Applicant: BASF SE ,  BASF Corporation

Inventor： Gerd Grubert ,  Torsten Neubauer ,  Alfred Punke ,  Marcus Hilgendorff ,  Torsten Müller-Stach ,  Olga Gerlach ,  Xinyi Wei ,  Jeffrey Hoke ,  Shiang Sung ,  Stanley Roth

IPC: B01J29/04 ,  B01D53/94 ,  B01J23/63

CPC classification number: B01J29/04 ,  B01D53/944 ,  B01D53/9477 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/9025 ,  B01D2258/012 ,  B01J23/63 ,  B01J29/7007 ,  B01J35/023 ,  B01J35/04 ,  B01J37/0036 ,  B01J37/0244 ,  B01J37/0246 ,  B01J2523/00 ,  B01J2523/3706 ,  B01J2523/3712 ,  B01J2523/3718 ,  B01J2523/48 ,  B01J2523/49 ,  B01J2523/31 ,  B01J2523/824 ,  B01J2523/828

Abstract: The present invention relates to a layered diesel oxidation catalyst (DOC) comprising: a) a carrier substrate; b) a diesel oxidation catalytic material comprising b1) a first layer located on the carrier substrate, the first layer comprising palladium impregnated on a support material comprising ceria in an amount of at least 45 weight-% based on the total weight of the support material, and optionally comprising platinum; b2) a second layer located on the first layer, the second layer comprising palladium and platinum each impregnated on a support material comprising a metal oxide; wherein the platinum to palladium weight ratio of the first layer is lower than the platinum to palladium weight ratio of the second layer.

Abstract translation: 本发明涉及层状柴油氧化催化剂（DOC），其包括：a）载体基材; b）一种柴油氧化催化材料，其包含：b1）位于所述载体基底上的第一层，所述第一层包含浸渍在载体材料上的钯，所述载体材料包含基于载体材料总重量至少45重量％的二氧化铈 ，并且任选地包含铂; b2）位于所述第一层上的第二层，所述第二层包含钯和铂，各自浸渍在包含金属氧化物的载体材料上; 其中第一层的铂与钯的重量比低于第二层的铂与钯的重量比。