A process of producing a catalyst comprises forming mesoporous beta zeolite particles, impregnating mesoporous beta zeolite particles with a metal and phosphorus to produce a metal and phosphorus impregnated zeolite, and incorporating the metal and phosphorus impregnated zeolite with clay and alumina to produce the catalyst. The forming step comprises converting a crystalline beta zeolite to a non-crystalline material with reduced silica content relative to the crystalline beta zeolite, and crystalizing the non-crystalline material to produce mesoporous beta zeolite particles.

Disclosed are novel supported nanoparticle compositions, precursors, processes for making supported nanoparticle compositions, processes for making catalyst compositions, and processes for converting syngas. The catalyst composition can comprise nanoparticles comprising metal oxide(s), such as manganese cobalt oxide. This disclosure is particularly useful for converting syngas via the Fischer-Tropsch reactions to make olefins and/or alcohols.

Iron oxide particles which have a polyhedral shape and which contain molybdenum. The crystallite size of the plane of the iron oxide particles is preferably 280 nm or more. Furthermore, a method for producing the iron oxide particles. The method includes calcining an iron compound in the presence of a molybdenum compound.

An AlP composite oxide containing aluminum oxide and phosphorus oxide, wherein with respect to the total mass of the AlP composite oxide, the aluminum oxide content is 79 mass % or more and 97 mass % or less in terms of Al.sub.2O.sub.3, the zirconium oxide content is 0 mass % or more than 0 mass % and 7 mass % or less in terms of ZrO.sub.2, and the phosphorus oxide content is 3 mass % or more and 14 mass % or less in terms of PO.sub.4.

Described is a catalyst obtained by supporting magnesium and cerium on activated alumina, firing same to immobilize the metals, and then impregnating same with palladium and performing reduction thereon, and is applied, when hydrogen peroxide is prepared by means of an anthraquinone process, to operation solution regeneration or hydrogenation, and thus an efficient regeneration conversion rate or synthesis yield is achieved.

An exhaust gas cleaning catalyst for inhibiting particulates grain growth includes composite metal particulates containing Pd and Rh, where the average proportion of the total Rh atoms relative to the total Pd and Rh atoms is 0.5 atom %, and given an X-ray wavelength of 1.5403 , when the diffraction surface in XRD analysis is the crystal lattice face of the Pd(111), and diffraction angles 2 indicating the diffraction peak positions on the diffraction surface are identified, the absolute value of the difference between the theoretical lattice constant B from a formula related to Vegard's law using the identified values, and the actual lattice constant C from a formula related to lattice constants and Bragg's law does not exceed 1.02010.sup.3 (). A smaller absolute value of the difference between the theoretical and actual lattice constants is associated with a higher degree to which the Pd and Rh are combined with one another.

The present invention relates to a catalyst for selective hydrodesulphurization of cracked naphtha streams in the form of an extrudate, which comprises a support based on an inorganic oxide and an outer layer bound to the support, wherein the outer layer comprises desulphurization metals dispersed therein forming a crown, the desulphurization metals being cobalt and molybdenum. The present invention also relates to the preparation of said catalyst by the incipient wetness impregnation method and to the process for selective hydrodesulphurization of cracked naphtha employing same.

Metal nanoparticle-bearing carbonaceous supports, or solid-supported metal-catalysts, can be formed by incipient wetness, wet impregnation and ethylene glycol reduction methods. The solid-supported metal-catalysts can be used a heterogeneous catalysts in various catalytic reactions such as hydrodeoxygenation reactions, catalyze hydrodehalogenation reactions, NN hydrogenolysis reactions and oxidation reactions. The solid-supported metal-catalysts are easy to handle, are easily separable from reaction media, are stable in various types of reaction media, and are recyclable.

An exhaust gas-purifying three-way catalyst containing: (i) base material particles of a Nd-solid dissolved zirconia-based complex oxide comprising Nd and Zr as constituent metal elements in the following mass proportions: TABLE-US-00001 ZrO.sub.2 50 to 75% by mass; and Nd.sub.2O.sub.3 25 to 50% by mass, in terms of oxides; and (ii) Pd catalyst particles supported on the base material particles, wherein the Nd-solid dissolved zirconia-based complex oxide further contains at least one or more rare earth elements selected from the group consisting of yttrium, scandium, lanthanum, and praseodymium, as a constituent metal element, in an amount of a total of more than 0% by mass to 20% by mass or less in terms of an oxide.

The invention relates to the recovery of heavy oil reservoirs, and more particularly to a supported catalyst-assisted microwave method for exploiting a heavy oil reservoir. The method includes: (1) injecting a slug of a supported catalyst fluid into the heavy oil reservoir; (2) placing a microwave generator in the heavy oil reservoir to perform volumetric heating on an oil layer containing the supported catalyst fluid; and (3) turning off the microwave generator and injecting water into the heavy oil reservoir for subsequent displacement, where a water injection rate is 3 m/d or less.