Title:
SUBSTRATE MONOLITH COMPRISING SCR CATALYST
Document Type and Number:
WIPO Patent Application WO/2013/088129
Kind Code:
A3
Abstract:
A substrate monolith (6) having a length L and comprising a first zone (11) of substantially uniform length defined at one end by a first end of the substrate monolith, which first zone comprising a selective catalytic reduction (SCR) catalyst for reducing oxides of nitrogen with a nitrogenous reductant in exhaust gas emitted from an internal combustion engine and a second zone (8) of substantially uniform length less than L defined at one end by a second end of the substrate monolith, which second zone comprising (a) at least one particulate metal oxide or a mixture of any two or more thereof for trapping gas phase platinum group metal (PGM), which at least one particulate metal oxide does not act as a support for any other catalytic component; or (b) a component capable of trapping and/or alloying with gas phase PGM.
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Inventors:
CASTAGNOLA MARIO JAIME (US)
CHIFFEY ANDREW FRANCIS (GB)
PHILLIPS PAUL RICHARD (GB)
RAJARAM RAJ (GB)
WALKER ANDREW (GB)
CHIFFEY ANDREW FRANCIS (GB)
PHILLIPS PAUL RICHARD (GB)
RAJARAM RAJ (GB)
WALKER ANDREW (GB)
Application Number:
PCT/GB2012/053083
Publication Date:
December 27, 2013
Filing Date:
December 11, 2012
Export Citation:
Assignee:
JOHNSON MATTHEY PLC (GB)
International Classes:
B01J23/38; B01D53/94; B01J33/00; B01J35/00; B01J35/04; F01N3/08; F01N3/20
Domestic Patent References:
| WO2011131324A1 | 2011-10-27 |
Foreign References:
| US20110064633A1 | 2011-03-17 | |||
| US20110173950A1 | 2011-07-21 | |||
| US20110138777A1 | 2011-06-16 |
Attorney, Agent or Firm:
TURBERVILLE, Simon (Intellectual Property DepartmentGate 20,Orchard Road, Royston Hertfordshire SG8 5HE, GB)
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