Palladium-substituted lanthanum cuprates: application to automotive exhaust purification

Pd-containing perovskite-type oxides used for three-way catalysts

“…It can also enhance the activity of simple perovskite when small amounts of a noble metal are added [12][13][14]. Guilhaume et al [13] reported that the activity of palladium-substituted lanthanum cuprates, La 2 Cu 0.8 Pd 0.2 O 4 , was comparable to that of Pt-Rh/CeO 2 -Al 2 O 3 catalyst for NO reduction, and higher for CO and C 3 H 6 oxidation. Also Tanaka et al [12] reported that perovskite-supported palladium (Pd/(LaCe)(CoFe)O 3 ) had excellent potentiality for automotive exhaust purification as non-rhodium catalysts.…”

Fe,Pd Co‐Incorporated LaCoO3 Perovskites: Modification of Thermal Stability and Catalytic Activity for Gasoline Vehicle Exhaust Purification

“…[6,7] For example, perovskite-type oxides with transition-metal cations such as Cu, Mg, Cr, Fe, Co, and Ce at the B sites have been investigated. [8][9][10][11][12][13][14] Of these catalysts, LaCoO 3 as a typical perovskite has attracted widespread attention and has been reported as an excellent catalyst for many reactions, for example, CH 4 oxidation, CO oxidation, and NO reduction. [15][16][17][18][19][20] Recently, a mesoporous perovskite synthesized by the hard template method was studied and highlighted for its high NO x reduction efficiency and high NO x to N 2 selectivity.…”

<b>The surface behaviour and catalytic properties of Nd_2-XSr_XCoO_4±Λ mixed oxides</b>

“…In order to eliminate them, precious metal catalysts are widely used [3][4][5] but as they are expensive it is necessary to search for low-cost materials. The perovskite-like A 2 BO 4 mixed oxides with the K 2 NiF 4 structure consisting of alternating layers of ABO 3 , as in perovskite, and AO, as in rock salt, show high catalytic activity and good thermal stability and are also low-cost [6][7]. At present, there are many studies on LnSrCuO 4 and LnSrNiO 4 [8][9][10][11], and a few on the oxidation of CO and C 3 H 8 on LnSrCoO 4 [12], but no study on NO reduction over LnSrCoO 4 has been reported.…”