公开(公告)号：US20200179907A1

公开(公告)日：2020-06-11

申请号：US16791394

申请日：2020-02-14

Applicant: BASF Corporation

Inventor： Xinyi Wei ,  Stanley A. Roth ,  Haiyang Zhu

IPC: B01J23/42 ,  B01J37/02 ,  B01J37/00 ,  B01J35/04 ,  B01J35/00 ,  B01J23/44 ,  B01J37/10 ,  F01N3/10 ,  B01D53/94 ,  F01N3/035

Abstract: Emissions treatment systems of combustion engines are provided, which comprise a platinum-containing catalyst that is degreened during production, which is before exposure to operating conditions of a vehicle having a diesel engine. The platinum-containing catalyst, in the form of a platinum component on a high surface area refractory metal oxide support, exhibits a vibration frequency of about 2085 to about 2105 cm−1 as measured by CO-DRIFTS. Such catalytic material is essentially-free of platinum oxide species found at greater than about 2110 cm−1 as measured by CO-DRIFTS. Such catalysts can provide excellent and consistent conversion of nitrogen oxide (NO) to nitrogen dioxide (NO2).

公开(公告)号：US09687818B2

公开(公告)日：2017-06-27

申请号：US14058559

申请日：2013-10-21

Applicant: BASF Corporation

Inventor： Attilio Siani ,  Torsten W. Müller-Stach ,  Torsten Neubauer ,  Xinyi Wei

IPC: B01D53/94 ,  B01J21/00 ,  B01J21/04 ,  B01J23/00 ,  B01J23/02 ,  B01J23/08 ,  B01J23/10 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  B01J23/56 ,  B01J23/58 ,  B01J20/00 ,  B01J23/38 ,  B01J23/48 ,  B01J37/02 ,  B01J37/04 ,  B01J37/16 ,  B01J35/00

CPC classification number: B01J23/44 ,  B01D53/94 ,  B01D53/944 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/104 ,  B01D2255/106 ,  B01J21/04 ,  B01J23/38 ,  B01J23/42 ,  B01J23/48 ,  B01J35/0013 ,  B01J35/002 ,  B01J35/006 ,  B01J37/0203 ,  B01J37/04 ,  B01J37/16

Abstract: The present invention relates to a process for preparing a catalyst, at least comprising the steps of adding a protecting agent to an aqueous solution of a metal precursor to give a mixture (M1), adding a reducing agent to mixture (M1) to give a mixture (M2), adding a support material to mixture (M2) to give a mixture (M3), adjusting the pH of mixture (M3), and separating the solid and liquid phase of mixture (M3). Furthermore, the present invention relates to the catalyst as such and its use as diesel oxidation catalyst.

公开(公告)号：US09044734B2

公开(公告)日：2015-06-02

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: B01J23/63 ,  B01D53/94 ,  B01J29/04 ,  B01J37/02 ,  B01J29/70 ,  B01J35/04 ,  B01J35/02 ,  B01J37/00

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。