An exhaust gas purifying catalyst includes an inlet-side catalyst layer formed on an inner side of the partition wall from a surface of the partition wall in contact with an inlet-side cell and formed along an extension direction from an end portion on the exhaust gas inflow side, and an outlet-side catalyst layer formed on the inner side of the partition wall from a surface of the partition wall in contact with an outlet-side cell and formed along the extension direction from an end portion on the exhaust gas outflow side. Here, a sum of the lengths of the inlet-side catalyst layer and the outlet-side catalyst layer is larger than the entire length of the partition wall, and a total amount of an SCR catalyst body present in the outlet-side catalyst layer is larger than a total amount of an SCR catalyst body present in the inlet-side catalyst layer.

A supported catalyst used for synthesizing a polyether amine, and a manufacturing method of the catalyst. The catalyst comprises: a porous oxide as a support; Ni, Cu, Pd, and Rh as active components; and one or more of any of Zr, Cr, Mo, Fe, Zn, Sn, Bi, Ce, La, Hf, Sr, Sb, Mg, Be, Re, Ta, Ti, Sc, Ge and related metals as an auxiliary agent. The catalyst can be used in an amination reaction for a large molecular weight polyether polyol, and is particularly active and selective for an amination reaction of a low molecular weight polyether polyol. The catalyst has a simple and economic manufacturing technique and good potential for future applications.

The present invention is directed to address the following problem: in an exhaust gas purification catalyst comprising a dual catalyst of a combination of a startup catalyst and an underfloor catalyst, reduction in the gas diffusivity of the underfloor catalyst results in reduction in the use efficiency of a catalytic active site, resulting in reduction in purification performance. The present invention relates to an exhaust gas purification catalyst comprising a dual catalyst of a combination of a startup catalyst and an underfloor catalyst having a catalyst coating where a large number of voids are included, wherein high-aspect-ratio pores having an aspect ratio of 5 or more account for a certain rate or more of the whole volume of the voids, to thereby enhance the purification performance of the catalyst.

The present invention is directed to address the following problem: in an exhaust gas purification catalyst comprising a dual catalyst of a combination of a startup catalyst and an underfloor catalyst, reduction in the gas diffusivity of the underfloor catalyst results in reduction in the use efficiency of a catalytic active site, resulting in reduction in purification performance. The present invention relates to an exhaust gas purification catalyst comprising a dual catalyst of a combination of a startup catalyst and an underfloor catalyst having a catalyst coating where a large number of voids are included, wherein high-aspect-ratio pores having an aspect ratio of 5 or more account for a certain rate or more of the whole volume of the voids, to thereby enhance the purification performance of the catalyst.

An exhaust gas purification catalyst, excellent in the NOx purification capacity and the HC purification capacity, includes a substrate and a catalyst coating layer formed on the surface of the substrate, wherein the catalyst coating layer comprises the upper and lower layer including a lower layer being closer to the surface of the substrate and an upper layer being relatively remote from the surface of the substrate. The upper layer of the catalyst coating layer includes Rh, Pd, and a carrier. The lower layer of the catalyst coating layer includes at least one noble metal selected from Pd and Pt and a carrier. 65% by mass or more of Pd in the upper layer exists in a layer up to 50% of the upper layer in a thickness direction from the surface of the upper layer being relatively remote from the surface of the substrate. The ratio of Pd to Rh by mass (Pd/Rh) is 0.5 to 7.0 in the upper layer.

Disclosed is a method for preparing cellulose and lignin oil by depolymerizing lignocellulose without exogenous hydrogen, including: performing reaction on the lignocellulose dispersed into an aqueous medium at 120? C. to 180? C. under the action of a catalyst; and separating a reaction product to obtain the cellulose and the lignin oil. The catalyst includes a carrier and an active ingredient loaded on the carrier, where the active ingredient is selected from one of platinum, palladium, ruthenium and nickel; the carrier is selected from one of a metal oxide, a metal composite material, silicon dioxide, nitrogen-doped carbon, molybdenum carbide and molybdenum nitride; and the metal oxide is selected from one of niobium oxide, tantalum oxide, tungsten oxide, zirconium oxide, aluminum oxide, titanium dioxide and molybdenum oxide.

Disclosed is a method for preparing cellulose and lignin oil by depolymerizing lignocellulose without exogenous hydrogen, including: performing reaction on the lignocellulose dispersed into an aqueous medium at 120? C. to 180? C. under the action of a catalyst; and separating a reaction product to obtain the cellulose and the lignin oil. The catalyst includes a carrier and an active ingredient loaded on the carrier, where the active ingredient is selected from one of platinum, palladium, ruthenium and nickel; the carrier is selected from one of a metal oxide, a metal composite material, silicon dioxide, nitrogen-doped carbon, molybdenum carbide and molybdenum nitride; and the metal oxide is selected from one of niobium oxide, tantalum oxide, tungsten oxide, zirconium oxide, aluminum oxide, titanium dioxide and molybdenum oxide.

A photocatalyst/alloy fine-particle dispersion containing two kinds of fine particles dispersed in an aqueous dispersion medium, (i) photocatalyst fine particles and (ii) alloy fine particles containing an antibacterial/antifungal metal, easily forms a photocatalyst/alloy fine-particle thin film of high transparency that exhibits antibacterial/antifungal properties regardless of the presence or absence of light irradiation.

A photocatalyst/alloy fine-particle dispersion containing two kinds of fine particles dispersed in an aqueous dispersion medium, (i) photocatalyst fine particles and (ii) alloy fine particles containing an antibacterial/antifungal metal, easily forms a photocatalyst/alloy fine-particle thin film of high transparency that exhibits antibacterial/antifungal properties regardless of the presence or absence of light irradiation.

A catalyst for purifying exhaust gas includes a first catalyst including a first metal oxide on which platinum (Pt) and rhodium (Rh) are supported, and a second catalyst including a second metal oxide on which palladium (Pd) and platinum (Pt) are supported, wherein the first catalyst and the second catalyst are physically mixed.