Abstract: The present invention provides a method for preparing rhodium (III) 2-ethylhexanoate solutions which supplies the reaction product with higher space yield, as well as lower sodium and chloride ion content. An aqueous solution of an alkali salt of 2-ethylhexanoate is thereby initially converted with a rhodium (III) precursor. The rhodium (III) precursor is selected from rhodium (III) chloride solution, rhodium (III) chloride hydrate, and rhodium (III) nitrate. The mixture is heated for several hours. After cooling to room temperature, the rhodium (III) 2-ethylhexanoate formed is extracted from the aqueous solution with an alcohol that is immiscible in water or a carboxylic acid that is immiscible in water, and optionally washed with aqueous mineral acid. The rhodium (III) 2-ethylhexanoate solution obtainable in this way may be used directly as catalyst in hydroformylation reactions.

Abstract: The present invention provides an exhaust gas purifying catalyst which can maintain high catalyst activity even after the exhaust gas purifying catalyst is exposed to an exhaust gas at a high temperature for a long period of time. The exhaust gas purifying catalyst contains a Pd—Pr complex and PdO, and the Pd—Pr complex is represented by PraPdbOc, where a=1 to 3, b=1 to 10, and c=1 to 6.

Abstract: The invention relates to a nitrogen oxide storage catalyst composed of at least two catalytically active washcoat layers on a support body, wherein a lower washcoat layer A comprises cerium oxide, an alkaline earth metal compound and/or an alkali compound, platinum and palladium, and an upper washcoat layer B located above washcoat layer A comprises cerium oxide, platinum and palladium, does not contain any alkali and alkaline-earth compounds, and has macropores. Also disclosed is a method for converting NOx in exhaust gases from motor vehicles operated with lean-burn engines.

Abstract: Method for the preparation of a catalyst comprising vanadium pentoxide supported on a metal oxide catalyst carrier comprising the steps of a) providing particles of crystalline vanadium pentoxide and particles of a metal oxide catalyst carrier; b) solid state mixing the particles and dispersing the vanadium pentoxide particles on surface of the metal oxide carrier particles; and c) anchoring the dispersed vanadium pentoxide particles on surface of the metal oxide carrier particles by calcination at a temperature above 500° C., characterized in that sintering of the vanadium pentoxide particles is suppressed by addition of an anti-sintering metal oxide component, such as tungsten trioxide, during the anchoring in step c).

Abstract: This invention relates generally to metal carbene olefin metathesis catalyst compounds, to the preparation of such compounds, compositions comprising such compounds, methods of using such compounds, articles of manufacture comprising such compounds, and the use of such compounds in the metathesis of olefins and olefin compounds. The invention has utility in the fields of catalysts, organic synthesis, polymer chemistry, and industrial and fine chemicals industry.

Abstract: The present disclosure concerns specially patterned zinc sheets for coverage and protection of building roofs and facades. A recurrent problem linked with the use of zinc sheets in building applications is the development of white rust. As the complete avoidance of white rust is difficult to achieve, additional means to reduce its impact are most welcome. It is now proposed to limit the visibility of white rust by providing a camouflaging pattern on the surface of the zinc. The invention more specifically concerns an unweathered rolled zinc alloy sheet with at least one patterned face having an optical reflectivity that varies from region to region, characterized in that said regions are of a pseudo-random shape, having characteristic dimensions in the range of 0.1 mm to 10 cm; and in that the optical reflectivity, when measured across the sheet in any arbitrary direction, presents a specular reflectivity RMS deviation of more than 3 GU and/or a diffuse reflectivity RMS deviation of more than 0.2.

Abstract: A lithium metal oxide powder for use as a cathode material in a rechargeable battery, consisting of Li metal oxide core particles having a general formula Li1+d(NixMnyCozZrkM?m)i?dO2±eAr; wherein Al2O3 is attached to the surface of the core particles; wherein 0?d?0.08, 0.2?x?0.9, 0<y?0.7, 0<z?0.4, 0?m?0.02, 0<k?0.05, e<0.02, 0?f?0.02 and x+y+z+k+m=1; M? consisting of either one or more elements from the group Al, Mg, Ti, Cr, V, Fe and Ga; A consisting of either one or more elements from the group F, P, C, CI, S, Si, Ba, Y, Ca, B, Sn, Sb, Na and Zn; and wherein the Al2O3 content in the powder is between 0.05 and 1 wt %.

Abstract: The present invention relates to a process for the manufacture of a copper containing small-pore zeolite which comprises?preparing a reaction mixture comprising a zeolite of the faujasite framework type, Cu-tetraethylenepentamine (Cu-TEPA) and at least one compound M(OH)x, which does not comprise the tetraethylammonium cation and?heating the reaction mixture to form a copper containing small-pore zeolite.

Abstract: The invention relates to an improved process for inexpensive and environmentally benign preparation of trialkylgallium compounds of the general formula: R3Ga in high yield and selectivity, where R is alkyl of 1 to 4 carbon atoms. Trialkylgallium is prepared according to the invention via the intermediate stage alkylgallium dichloride (RGaCl2) or dialkylgallium chloride/alkylgallium dichloride mixture (R2GaCl/RGaCl2). The RGaCl2 obtained or the R2GaCl/RGaCl2 mixture also forms part of the subject-matter of the present invention. The novel process of the present invention is notable for improved process management. The process intentionally makes substantial use of inexpensive starting materials and reagents of low environmental impact and so is also useful for the industrial scale.

Abstract: A method for the removal of nitrogen oxides from exhaust, flue or off gas by selective catalytic reduction in presence of ammonia as a reductant, comprising the steps of contacting the exhaust gas together with the ammonia or a precursor thereof with an SCR catalyst comprising a Fe-AEI zeolite material essentially free of alkali metal ions (Alk), having the following molar compositions: SiO2:oAl2O3:pFe:qAlk wherein o is in the range from 0.001 to 0.2; wherein p is in the range from 0.001 to 0.2; wherein Alk is one or more of alkali metal ions and wherein q is below 0.02.

Abstract: A process is divulged for the recovery of lithium from metallurgic slags comprising the steps of roasting spodumene to convert it from the alpha to the beta variant; reacting the beta variant with sulfuric acid, using a stoichiometric excess of acid; repulping the reaction product with water, forming an acidic slurry; neutralizing the acidic slurry to a pH between 5 and 7, by addition of at least one neutralizing agent; filtrating the neutralized slurry, thereby obtaining a lithium bearing solution and a residue; characterized that, in either one or both of the steps of repulping and neutralizing the acidic slurry, lithium-bearing metallurgic slag is added as neutralization agent. The lithium-bearing metallurgic slag is used to substitute at least part of the classic neutralizing agent. The lithium in the slag is released, and added to the lithium liberated from the spodumene.

Abstract: The present invention provides exhaust gas purification catalyst for an internal combustion engine, and exhaust gas purification method using the catalyst. The present invention provides the exhaust gas purification catalyst including a support, a first catalyst layer on an upstream side, a second catalyst layer on a downstream side, and a third catalyst layer. In the exhaust gas purification catalyst, the upstream portion of the third catalyst layer is present on the first catalyst layer, the downstream portion of the third catalyst layer is present on the second catalyst layer, and in the middle portion between the upstream portion and the downstream portion of the third catalyst layer is present between the first catalyst layer and the second catalyst layer.

Abstract: The present disclosure relates to a substrate containing passive NOx adsorption (PNA) materials for treatment of gases, and washcoats for use in preparing such a substrate. Also provided are methods of preparation of the PNA materials, as well as methods of preparation of the substrate containing the PNA materials. More specifically, the present disclosure relates to a coated substrate containing PNA materials for PNA systems, useful in the treatment of exhaust gases. Also disclosed are exhaust treatment systems, and vehicles, such as diesel or gasoline vehicles, particularly light-duty diesel or gasoline vehicles, using catalytic converters and exhaust treatment systems using the coated substrates.

Abstract: A method for the cleaning of exhaust gas from a compression ignition engine, comprising the steps of injecting a first amount of an aqueous urea solution into the gas; in a first mode of operation and at an exhaust gas temperature of between 150 and 220° C. hydrolysing the first amount of urea to ammonia reducing agent in presence of a first catalyst comprising vanadium oxide supported on titania and subsequently removing part of nitrogen oxides contained in the exhaust gas by contacting the gas mixed with the ammonia reducing agent through a second catalyst comprising platinum on titania and/or alumina; and in a second mode of operation and at an exhaust gas temperature above 220° C. removing a part of the nitrogen oxides in presence of the first catalyst and the ammonia reducing agent and subsequently oxidising hydrocarbons, carbon monoxide and remaining amount of the ammonia reducing agent further contained in the exhaust gas by passing the gas through the second catalyst.

Abstract: A catalyst for purification of exhaust gas containing a phosphorus compound includes: a lower catalyst layer containing at least one of noble metal provided on a refractory three-dimensional structure; and an upper catalyst layer at an inflow side of exhaust gas and an upper catalyst layer at an outflow side of exhaust gas provided on a surface of the lower catalyst layer. The upper catalyst layer at the inflow side and the upper catalyst layer at the outflow side have different concentrations of noble metal. The catalyst has an intermediate zone with a length of 3 to 23% of the overall length of the refractory three-dimensional structure provided between the upper catalyst layer at the inflow side and the upper catalyst layer at the outflow side. The intermediate zone starts from a position 10 to 38% from an end face of the catalyst at the inflow side of exhaust gas.

Abstract: A multifunctional wall flow filter and a system having same performing removal of noxious compounds comprising nitrogen oxides, volatile organic compounds and carbon monoxide and particulate matter from exhaust gas of a compression ignition engine is disclosed.

Abstract: Method for the preparation of a catalyst comprising vanadium pentoxide supported on a metal oxide catalyst carrier comprising the steps of a) providing particles of crystalline vanadium pentoxide and particles of a metal oxide catalyst carrier; b) solid state mixing the particles and dispersing the vanadium pentoxide particles on surface of the metal oxide carrier particles; and c) anchoring the dispersed vanadium pentoxide particles on surface of the metal oxide carrier particles by calcination at a temperature above 500° C., characterized in that sintering of the vanadium pentoxide particles is suppressed by addition of an anti-sintering metal oxide component, such as tungsten trioxide, during the anchoring in step c).

Abstract: Method for the preparation of a honeycomb catalyst including the steps of pre-coating a non-woven fibrous sheet, corrugating the fibrous sheet and rolling-up or stacking-up the corrugated sheet to form a honeycomb body. The honeycomb body is subsequently washcoated, including the addition of at least one catalytically active compound.

Abstract: A positive electrode for a rechargeable battery comprising at least 95% active cathode material with an electrode loading of at least 6 mg/cm2, and preferably at least 10 mg/cm2, and an electrode porosity of less than 2%, and preferably less than 1%. The active cathode material may comprise a bimodal composition wherein at least 70% consists of a first lithium cobalt based oxide powder having an average particle size (D50) of at least 25 ?m and a BET value <0.2 m2/g, and a second lithium transition metal oxide based powder having the formula Li1+bN1?bO2, wherein 0.10?b?0.25, and N=NixMnyCo2Ad, wherein 0.10?x?0.40, 0.30?y?0.80, 0<z?0.20 and 0?d?0.10, A being a dopant, the second powder having an average particle size (D50) of less than 10 ?m.

Abstract: A lithium metal oxide powder for use as a cathode material in a rechargeable battery, consisting of a core material and a surface layer, the core having a layered crystal structure consisting of the elements Li, a metal M and oxygen, wherein the Li content is stoichiometrically controlled, wherein the metal M has the formula M=Co1-aM?a, with 0?a?0.05, wherein M? is either one or more metals of the group consisting of Al, Ga and B; and the surface layer consisting of a mixture of the elements of the core material and inorganic N-based oxides, wherein N is either one or more metals of the group consisting of Mg, Ti, Fe, Cu, Ca, Ba, Y, Sn, Sb, Na, Zn, Zr and Si.