Johnson Matthey Public Limited Company

Andrea Eva Pascui

Kerry Simmance

Jing Lu

Janet M Fisher

Michael Anthony Howard

Shuhei Nagaoka

John Kilmartin

Qinghe Zheng

Maria C Vlachou

Nicoleta Muresan

Emily Price

Janet Fisher

Paul Millington

A catalyst composition comprising a first platinum group metal (PGM) component and a first support material, wherein the first PGM component comprises platinum (Pt) and palladium (Pd) and is supported on the first support material; and wherein the first PGM component has a Pt:Pd molar ratio of from about 5:95 to about 95:5.

TWC catalysts for gasoline engine exhaust gas treatments

Provided is a composition comprising a ceria-zirconia mixed oxide, the ceria-zirconia mixed oxide being surface-modified with a perovskite type compound of formula (I); wherein formula (I) is defined by AA'BB′O; where: A is an ion of a metal selected from the group consisting of Li, Na, K, Cs, Mg, Sr, Ba, Ca, Y, La, Ce, Pr, Nd, and Gd; A′ is an ion of a metal selected from the group consisting of Li, Na, K, Cs, Mg, Sr, Ba, Ca, Y, La, Ce, Pr, Nd, and Gd; B is an ion of a metal selected from the group consisting of Cu, Mn, Mo, Co, Fe, Ni, Cr, Ti, Zr, Al, Ga, Sc, Nb, V, W, Bi, Zn, Sn, Pt, Rh, Pd, Ru, Au, Ag, and Ir; B′ is an ion of a metal selected from the group consisting of Cu, Mn, Mo, Co, Fe, Ni, Cr, Ti, Zr, Al, Ga, Sc, Nb, V, W, Bi, Zn, Sn, Pt, Rh, Pd, Ru, Au, Ag, and Ir; x is from 0.7 to 1; y is from 0 to 0.5; and z is from 0 to 0.5.

Surface-modified ceria-zirconia mixed oxide compound for gasoline exhaust

Compositions, articles, and methods related to a three-way-catalyst composition comprising a perovskite-type compound of formula (I): LaBB'Oor formula (II):[BO]:[LaBO]and a non-redox active component; wherein B or B&#x2032; is Fe, Mn, Co, Ni, Cu, Ti, or Zr; q is in a range from about 0 to about 0.5; x is from about 1 to about 2.5; y is from about 1 to about 30 wt %; z is about 0.6 to about 1.1; &#x3b4; is in a range from about 0 to about 0.6.

Active perovskite-type catalysts stable to high temperature aging for gasoline exhaust gas applications

The present disclosure is directed to compositions for use in oxygen capture applications, for example in three-way catalysts (TWC) systems. In some embodiments, the compositions comprise composites of aggregated and/or fused primary particles, the aggregated and/or fused primary particles collectively having the formulae [MnO]::[LaMnO]; wherein x is in a range from about 1 to 2.5; y is in a range from about 1 to about 30 wt %, or from about 1 to about 20 wt % or from about 2-10 wt % or from about 2 to about 5 wt %; and z is about 0.7 to about 1.1; and the LaMnOis a crystalline perovskite phase; the aggregated and/or fused primary particles of the composite having a mean surface area in a range of from about 25 to about 60 m/g, preferably from about 27 to about 45 m/g. In preferred embodiments, these compositions further comprise low levels of at least one platinum group metal (PGM), preferably Pd.

Manganese oxide-lanthanum manganate-PGM composites for TWC applications

An exhaust gas treatment system () comprises a catalyst article () for the treatment of an exhaust gas, the catalyst article () comprising a non-metallic substrate () comprising a plurality of catalytically-active transition-metal-doped iron oxide magnetic particles (), and an inductive heater () for inductively heating the plurality of catalytically-active magnetic particles by applying an alternating magnetic field.

Growing community of inventors

Reading, United Kingdom

Andrea Eva Pascui