Catalytic materials for exhaust gas purifying catalyst composites comprise platinum group metal (PGM)-containing catalysts whose PGM component(s) are provided as nanoparticles and are affixed to a refractory metal oxide, which may be provided as a precursor. Upon calcination of the catalysts, the PGM is thermally affixed to and well-dispersed throughout the support. Excellent conversion of hydrocarbons and nitrogen oxides can advantageously be achieved using such catalysts.

Disclosed herein are a heterogeneous catalyst for the preparation of 3-hydroxypropionic acid (3-HPA) from allyl alcohol, and a method for the preparation of 3-HPA from allyl alcohol using the catalyst. In the presence of the heterogeneous catalyst containing gold on a carrier, a liquid-phase reaction is conducted to produce 3-HPA from allyl alcohol at high yield.

A method for preparing a cracking catalyst includes combining a zeolite, an alumina binder, and phosphoric acid to form an extrusion mixture. The phosphoric acid acts as a peptizing agent. The extrusion mixture comprises from 0.000271 weight percent to 0.1 weight percent phosphoric acid based on the total weight of the extrusion mixture. The method further includes extruding the extrusion mixture to produce an extrudate. During the extruding, the phosphoric acid peptizes the alumina binder in the extrudate. The method further includes drying and calcining the extrudate to produce the cracking catalyst.

A method for making a functional structural body includes a skeletal body of a porous structure composed of a zeolite-type compound, and at least one type of metallic nanoparticles present in the skeletal body, the skeletal body having channels connecting with each other, the metallic nanoparticles being present at least in the channels of the skeletal body.

A catalyst composition comprising a) platinum; and b) at least one composite, wherein platinum is supported on the composite, wherein the composite comprises: ceria (calculated as CeO2) in an amount of 5.0 to 50 wt. %, based on the total weight of the composite; alumina (calculated as Al2O3) in an amount of IO to 80 wt. %, based on the total weight of the composite; and magnesia (calculated as MgO) in an amount of to 80 wt. %, based on the total weight of the composite. The present invention also provides a process for the preparation of the catalyst composition. The present invention further provides a catalytic article and its preparation.

The present disclosure relates to a method for the production of metal-containing spherically porous carbon particles. For this purpose, a carbon precursor is preferably polymerized with a structure-forming template in a solvent to form a polymer solution in a first step, the metal compound is added to the polymer solution in a second step and finally the metal-containing spherically porous carbon particles are formed in a third step by means of an aerosol spraying method. In addition, the present disclosure relates to a method for producing an ink and a use of the metal-containing spherically porous carbon particles as a catalyst.

The present invention relates to an apparatus for reducing NOx in air, and a method of preparing a catalyst for reducing NOx in air, wherein the catalyst is for use in the apparatus. The apparatus comprises a catalyst, wherein the catalyst comprises Pt, PtCu, PtCo, PtNi, Pd, PtPd and/or PdCu. The apparatus further comprises a reaction chamber for receiving the catalyst, comprising an inlet for air and reductant, and an outlet. A heater is configured to heat the catalyst to temperatures of from 20 C. to 100 C. The apparatus also comprises a source of reductant, wherein the source of reductant is connected to the inlet. The method comprises step a) of combining a support material in water with a stabilising polymer to form an aqueous solution. Step b) includes adding a first metallic compound to the aqueous solution formed in step a), and stirring the solution. Step c) includes adding a reducing agent to the solution formed in step b), so as to form metallic nanoparticles. Step d) includes adding an acid to the solution formed in step c). Step e) includes stirring the solution formed in step d) and subsequently filtering and drying to form supported metallic nanoparticles.

Disclosed are catalysts comprised of platinum and gold. The catalysts are generally useful for the selective oxidation of compositions comprised of a primary alcohol group and at least one secondary alcohol group wherein at least the primary alcohol group is converted to a carboxyl group. More particularly, the catalysts are supported catalysts including particles comprising gold and particles comprising platinum, wherein the molar ratio of platinum to gold is in the range of about 100:1 to about 1:4, the platinum is essentially present as Pt(0) and the platinum-containing particles are of a size in the range of about 2 to about 50 nm. Also disclosed are methods for the oxidative chemocatalytic conversion of carbohydrates to carboxylic acids or derivatives thereof. Additionally, methods are disclosed for the selective oxidation of glucose to glucaric acid or derivatives thereof using catalysts comprising platinum and gold. Further, methods are disclosed for the production of such catalysts.

Disclosed are catalysts comprised of platinum and gold. The catalysts are generally useful for the selective oxidation of compositions comprised of a primary alcohol group and at least one secondary alcohol group wherein at least the primary alcohol group is converted to a carboxyl group. More particularly, the catalysts are supported catalysts including particles comprising gold and particles comprising platinum, wherein the molar ratio of platinum to gold is in the range of about 100:1 to about 1:4, the platinum is essentially present as Pt(0) and the platinum-containing particles are of a size in the range of about 2 to about 50 nm. Also disclosed are methods for the oxidative chemocatalytic conversion of carbohydrates to carboxylic acids or derivatives thereof. Additionally, methods are disclosed for the selective oxidation of glucose to glucaric acid or derivatives thereof using catalysts comprising platinum and gold. Further, methods are disclosed for the production of such catalysts.

A metal catalyst is formed by vaporizing a quantity of metal and a quantity of carrier forming a vapor cloud. The vapor cloud is quenched forming precipitate nanoparticles comprising a portion of metal and a portion of carrier. The nanoparticles are impregnated onto supports. The supports are able to be used in existing heterogeneous catalysis systems. A system for forming metal catalysts comprises means for vaporizing a quantity of metals and a quantity of carrier, quenching the resulting vapor cloud and forming precipitate nanoparticles comprising a portion of metals and a portion of carrier. The system further comprises means for impregnating supports with the nanoparticles.