A bimetal oxysulfide solid-solution catalyst is provided. The bimetal oxysulfide solid-solution catalyst is represented by formula (1):
M.sup.(1).sub.xM.sup.(2).sub.yO.sub.zS.sub.(1), wherein in formula (1), M.sup.(1) includes Copper (Cu) and M.sup.(2) includes monovalent Silver (Ag), divalent Zinc (Zn), Manganese (Mn), Nickel (Ni), Cobalt (Co), and Tin (Sn.sup.II), trivalent Indium (In), Cerium (Ce), Antimony (Sb), and Gallium (Ga), tetravalent Tin (Sn.sup.IV), or pentavalent Molybdenum (Mo), 0<y<0.3, 0.7<x<1.0, 0<z<0.5, and 0.5<<1.0. In addition, a manufacturing method of the bimetal oxysulfide solid-solution catalyst and applications of the bimetal oxysulfide solid-solution catalyst are also provided.

An oxidation catalyst is described for treating an exhaust gas produced by a diesel engine comprising a catalytic region and a substrate, wherein the catalytic region comprises a catalytic material comprising: bismuth (Bi), antimony (Sb) or an oxide thereof; a platinum group metal (PGM) selected from the group consisting of (i) platinum (Pt), (ii) palladium (Pd) and (iii) platinum (Pt) and palladium (Pd); and a support material, which is a refractory oxide: wherein the platinum group metal (PGM) is supported on the support material; and wherein the bismuth (Bi), antimony (Sb) or an oxide thereof is supported on the support material and/or the refractory oxide comprises the bismuth, antimony or an oxide thereof.

The present invention relates to a catalyst for the oxidation of hydrocarbon and the selective catalytic reduction of nitrogen oxides, the catalyst comprising a substrate comprising an inlet end, an outlet end, a substrate axial length extending from the inlet end to the outlet end and a plurality of passages defined by internal walls of the substrate extending therethrough; and a coating disposed on the surface of the internal walls of the substrate, wherein the surface de-fines the interface between the passages and the internal walls, wherein the coating comprises a platinum group metal component supported on a first oxidic material and further comprises a mixed oxide of vanadium and one or more of iron, erbium, bismuth, cerium, europium, gadolinium, holmium, lanthanum, lutetium, neodymium, praseodymium, promethium, samarium, scandium, terbium, thulium, ytterbium, yttrium, molybdenum, tungsten, manganese, cobalt, nickel, copper, aluminum and antimony, wherein the mixed oxide is supported on a second oxidic material.

A catalyst for selective catalytic reduction is described. Cerium (III) sulfate (cerous sulfate) is bound to a support. The catalyst also includes vanadium oxide and cerium oxide.

A catalytic partial wall-flow filter suitable for use in an exhaust gas treatment system, a method of making the catalytic partial wall-flow filter, and a method of using the catalytic partial wall-flow filter to remediate engine exhaust streams are disclosed. The filter comprises a partial wall-flow filter substrate having an inlet end, an outlet end, and a plurality of porous walls forming channels from the inlet end to the outlet end, wherein some of the channels are plugged channels and some are unplugged flow-through channels. A selective catalytic reduction (SCR) catalyst is coated on the porous walls.

A catalyst system for purifying an exhaust gas, comprising one or more antimony-containing regions comprising an antimony-containing catalyst, particularly antimony-containing SCR catalyst, and one or more antimony-trapping regions comprising a molecular sieve which is optionally metal-promoted, wherein at least one of the antimony-trapping regions is located downstream of the one or more antimony-containing regions in a flow direction of the exhaust gas, and also a method for treatment of an exhaust gas containing nitrogen oxides.

The present invention disclose catalyst compositions for the selective catalytic reduction of nitrogen oxides, consisting of at least one oxide of vanadium in an amount of 2.0 to 4.0 wt.-%, calculated as V.sub.2O.sub.5 and based on the total weight of the catalyst composition, at least one oxide of tungsten in an amount of 2.5 to 7.2 wt.-%, calculated as WO.sub.3 and based on the total weight of the catalyst composition, at least one oxide of antimony in an amount of 0.6 to 3.4 wt.-%, calculated as Sb.sub.2O.sub.5 and based on the total weight of the catalyst composition, at least one oxide of zirconium in an amount of 0 to 1.0 wt.-%, calculated as ZrO.sub.2 and based on the total weight of the catalyst, and at least one oxide of titanium in an amount of 84.6 to 94.9 wt.-% calculated as TiO.sub.2 and based on the total weight of the catalyst, wherein the weight ratio of the oxides of vanadium, tungsten, antimony, titanium and optionally zirconium, calculated as V.sub.2O.sub.5, WO.sub.3, Sb.sub.2O.sub.5, TiO.sub.2 and optionally ZrC.sub.2, respectively, add up to 100 wt.-%. Furthermore, SCR catalytic articles are disclosed wherein an SCR catalyst composition according to the invention is affixed in the form of a coating. Suitable catalyst carriers are corrugated substrates and cordierite monoliths. The SCR catalytic articles can be used in a method for the reduction of nitrogen oxides in exhaust gases of lean-burn internal combustion engines, and they can furthermore be comprised in an exhaust gas purification system for the treatment of diesel exhaust gas.