Johnson Matthey Inc.

Johnson Matthey Public Limited Company

Jonathan Ashley Cooper

Michael Anthony Howard

A NOstorage component comprises caesium silicate (CsSiO) and at least one platinum group metal. The invention also includes a NOabsorber catalyst comprising a NOstorage component according to the invention disposed on a substrate monolith; a method of treating exhaust gas containing NOfrom a lean burn internal combustion engine comprising the steps of contacting a NOstorage component comprising caesium silicate (Cs2SiO3) and at least one platinum group metal with lean exhaust gas containing NOto adsorb NOthereon; and periodically desorbing adsorbed NOby contacting the NOstorage component with stoichiometric or rich exhaust gas; and a method of making a NOstorage component according to the invention comprising the steps of combining and reacting an aqueous salt of at least one platinum group metal, an aqueous caesium salt and a source of silica.

Growing community of inventors

Bishops Stortford, United Kingdom

Jonathan Ashley Cooper