公开(公告)号：US3876556A

公开(公告)日：1975-04-08

申请号：US42715273

申请日：1973-12-26

Applicant: FELDMUEHLE ANLAGEN PROD

Inventor： LAACK ERICH ,  DWORAK ULF ,  THAMARUS GERHARD

IPC: B01D53/86 ,  B01J23/26 ,  B01J23/40 ,  B01J35/04 ,  B01J37/00 ,  C04B38/00 ,  F01N3/28 ,  B01J11/06 ,  B01J11/82

CPC classification number: F01N3/2803 ,  B01D53/86 ,  B01J35/04 ,  B01J37/0018 ,  B32B3/28 ,  B32B2305/80 ,  C04B38/0083 ,  F01N3/2835 ,  F01N2330/06 ,  F01N2330/14

Abstract: The radial and axial compressive strength of an approximately cylindrical talyst carrier, for automotive exhaust gases which is a honeycomb structure of thin aluminum oxide walls bounding axial conduits, is greatly enhanced by an outer shell of cured aluminum phosphate cement even if the latter is only one millimeter thick. The resistance of the carrier to thermal shock is improved if the wall of the shell spacedly envelops the outer axial face of the honeycomb core, and the annular gap is at least partly occupied by ceramic fibers which provide thermal insulation.