公开(公告)号：US20240001271A1

公开(公告)日：2024-01-04

申请号：US18254249

申请日：2021-12-01

Applicant: BASF CORPORATION

Inventor： Jun Cong Jiang ,  Yun Fei Qi ,  Florian Waltz ,  Stephan Siemund ,  Ye Shen ,  Attilio Siani ,  Thomas Schmitz ,  Xiao Min Yin

IPC: B01D39/20 ,  B01D53/94

CPC classification number: B01D39/20 ,  B01D2239/0471 ,  B01D53/9445

Abstract: The disclosure relates to a particulate filter for the treatment of exhaust gas from an internal combustion engine, wherein the particulate filter comprises a functional material layer, and the amount of the functional material layer in the region which is around the whole central axis of the particulate filter and accounts for 11.1 vol. % of the total volume of the particulate filter, is in the range from 13 to 40 wt. %, based on the total weight of the functional material layer, relates to the process for preparing the particulate filter and relates to a method for the treatment of exhaust gas from an internal combustion engine. The particulate filter according to the present invention has a centralized-distributed functional material layer in the radial direction, shows excellent filtration efficiency and low backpressure.