公开(公告)号：US09987612B1

公开(公告)日：2018-06-05

申请号：US15486411

申请日：2017-04-13

Applicant: Caterpillar Inc.

Inventor： David Mark Ginter ,  Ling Deng ,  Wilce Damion Williams ,  Ronald G. Silver

IPC: B01J19/24 ,  C01B3/40 ,  C01B3/38

CPC classification number: B01J19/2485 ,  B01J19/24 ,  B01J19/2475 ,  B01J2219/24 ,  B01J2219/2423 ,  B01J2219/2428 ,  C01B3/382 ,  C01B3/40 ,  C01B2203/0233 ,  C01B2203/0261 ,  C01B2203/1023 ,  C01B2203/1064

Abstract: A reactor assembly is provided. The reactor assembly includes a substrate and a first catalytic layer provided on the substrate. The first catalytic layer further includes a first temperature zone configured to operate at a first temperature. The first catalytic layer further includes a second temperature zone extending from the first temperature zone. The second temperature zone is configured to operate at a second temperature. The second temperature is lower than the first temperature. The reactor assembly also includes a diffusion barrier coating provided on the first catalytic layer. The diffusion barrier coating is configured to regulate a diffusion of gas phase oxygen therethrough for controlling the first temperature with respect to the second temperature.