Catalyst compositions, articles, systems and methods related to a three-way-catalyst composition comprising alumina doped with a transition metal.

A catalyst for abating a nitrogen oxide includes: a honeycomb substrate including a plurality of cell passages partitioned by a cell barrier rib; and a coating layer positioned on the internal side of the cell passages. The coating layer includes a support including Mg-substituted alumina (MgAl.sub.2O.sub.4), ceria (Ce), and a composite ceria; and Ba and a noble metal catalyst selected from the group consisting of Pt, Pd, Rh and combinations thereof, which are supported on the support. Also provided is a catalyst system for abating a nitrogen oxide includes the coating layer.

The present disclosure relates to a process for producing a finely divided metal-doped aluminogallate nanocomposite comprising mixing a carrier solvent with a bulk metal-doped aluminogallate nanocomposite to form a bulk metal-doped aluminogallate slurry and atomizing the bulk metal-doped aluminogallate slurry using a low temperature collision to produce a finely divided metal-doped aluminogallate nanocomposite, the composition of a nickel-doped aluminogallate nanocomposite (GAN), and a method of NO decomposition using the nickel-doped aluminogallate nanocomposite.

Disclosed are a ferrite catalyst and preparation methods thereof. The catalyst is provided with a formula below, wherein A is Mg atom, Zn atom or a mixture of both atoms at any ratio; D is one or more atoms selected from the group consisting of Ni, Co, W, Mn, Ca, Mo or V atom; Z is a catalyst carrier, which is one or more selected from the group consisting of calcium phosphate, calcium dihydrogen phosphate, aluminum phosphate, aluminum dihydrogen phosphate, ferric phosphate, magnesium phosphate, zinc phosphate, Mg—Al hydrotalcite, calcium carbonate, magnesium carbonate; a=0.01-0.6; b=0-0.30; c is a number balancing each valence; x, y represent the amounts of principal catalyst and carrier Z respectively, wherein the weight ratio y/x=0.5:1-7:1.
x(FeA.sub.aD.sub.bO.sub.c)/yZ

Disclosed is a lanthanide oxide coated catalyst, and methods for its use, that includes a supported catalyst comprising a support material, a catalytic material, and a lanthanide oxide, wherein the lanthanide oxide is attached to at least a portion of the surface of the supported catalyst.

Effect of the type of ZPGM material composition to improve thermal stability of ZPGM catalyst systems for TWC application is disclosed. ZPGM catalyst system samples are prepared and configured with washcoat on ceramic substrate, overcoat including doped Zirconia support oxide, and impregnation layer including either Cu.sub.1Mn.sub.2O.sub.4 spinel or Cu.sub.1Co.sub.1Mn.sub.1O.sub.4 spinel. Testing of ZPGM catalyst samples including variations of aging temperatures and different impregnation layer materials are developed under isothermal steady state sweep test condition for ZPGM catalyst systems to evaluate performance especially NO.sub.x conversions and level of thermal stability. As a result disclosed ZPGM catalyst systems with most suitable spinel that includes Cu.sub.1Co.sub.1Mn.sub.1O.sub.4 in impregnation layer exhibit high NOx conversion and significant improved thermal stability compare to Cu.sub.1Mn.sub.2O.sub.4 spinel, which is suitable for under floor and close coupled TWC application. The effect of adding Co to Cu—Mn spinel composition to improve thermal stability confirmed by TPR measurement.

The present invention provides a catalyst for production of nitric oxide from ammonia and oxygen. The catalyst has the composition A.sub.3-xB.sub.xO.sub.9-y, wherein A and B are selected from the group Mn, Co, Cr, Fe and Al, x is between 0 and 3 and y is between 0 and 6. The catalyst has a high selectivity towards nitric oxide and a low ignition temperature in the reactor. Further the present invention relates to a method for the production of gas comprising nitric oxide by the catalyst of the present invention. The produced gas has a low content of nitrous oxide.

Disclosed is a method for manufacturing crystals of aluminates of one or more element(s) other than aluminium, referred to as “A. The method includes: placing starting reagents, including at least one aluminium element source and a source of the element(s) A that has a degree of oxidation of between 1 and 6, in suspension in a liquid medium, forming a suspension referred to as the “starting suspension”; milling the starting suspension at ≤50° C., in a three-dimensional liquid medium ball mill for ≤5 minutes; recovering, at the outlet of the three-dimensional ball mill, a suspension referred to as the “end suspension” including the starting reagents in activated form or crystals of aluminate of the element(s) A generally in hydrated form; if required, calcination of the end suspension when it includes the starting reagents in activated form, to obtain generally non-hydrated crystals of aluminate of the element(s) A.

The present invention relates to a catalyst containing an active cobalt phase, deposited on a support comprising alumina, silica or silica-alumina, said support containing a mixed oxide phase containing cobalt and/or nickel, said catalyst has been prepared by introducing at least one organic compound of the family of dilactones. The invention also relates to the process for the preparation thereof, and to the use thereof in the field of Fischer-Tropsch synthesis processes.

Provided herein are systems containing a solar reactor having a mixture of plasmonic material and oxygen-conducting material that can convert carbon dioxide into a chemical feedstock.