Fe-SAPO-34 silicoaluminophosphates having Fe.sup.2+ organic complexes and methods for their direct synthesis in the absence of a co-templating agent are described. Fe-SAPO-34 silicoaluminophosphate having Fe.sup.3+ located in extra-framework locations within the pores of cages of the crystal are described. They are prepared by calcining the Fe-SAPO-34 silicoaluminphosphates containing Fe.sup.2+ polyamine complexes. Methods of using the Fe-SAPO-34 having Fe.sup.3+ located in extra-framework locations within the pores of cages of the crystal in the treatment of exhaust gases are described.

The method for preparing fluorine-doped lamellar black TiO.sub.2 nanomaterials includes mixing a solution of tetra-n-butyl titanate, n-propanol and hydrofluoric acid together, and then stir the solutions for a period of time. The solution is transferred into an autoclave and reacts at a certain temperature for a period of time. The sample obtained by the reaction is washed and dried. Then, the sample is heated in a protective atmosphere for a period of time so as to produce the fluorine-doped lamellar black TiO.sub.2 nanomaterials. This fluorine-doped lamellar black TiO.sub.2 owns superior optical absorption and electron transport performances.

The present invention relate to a binderless molecular sieve catalyst and a process for preparing the same, which are mainly useful for solving the problems of the current catalysts, such as lower activity, less pore volume and worse diffusivity. The present invention relates to a novel binderless molecular sieve catalyst, comprising, based on the weight of the catalyst, 90-100 wt. % of a molecular sieve, 0-10 wt. % of a binder, and 0-10 wt. % of an anti-wear agent, wherein said catalyst has a pore volume of 0.1-0.5 ml/g, an average pore diameter of 50-100 nm, and a porosity of 20-40%; the anti-wear agent is selected from the rod or needle-like inorganic materials having a length/diameter ratio of 2-20. Said catalyst has the advantages of higher activity, greater pore volume, larger average pore diameter and porosity, and better diffusivity, and well solves said problems and can be used for the industrial preparation of binderless molecular sieve catalysts.

Embodiments relate to a cerium-containing nano-coating composition, the composition including an amorphous matrix including one or more of cerium oxide, cerium hydroxide, and cerium phosphate; and crystalline regions including one or more of crystalline cerium oxide, crystalline cerium hydroxide, and crystalline cerium phosphate. The diameter of each crystalline region is less than about 50 nanometers.

A composition containing photoactive metal oxide particles and capable of reducing generation of an aldehyde compound, etc. caused by photocatalytic action, and a production method for the composition. The composition including photoactive metal oxide particles (A), a dispersant (B), and an organic solvent (C) other than a volatile aldehyde compound, wherein the composition contains a C.sub.1-2 alcohol in an amount of 200 ppm or less. The composition, wherein the metal oxide particles (A) contain at least one photoactive metal oxide selected from the group consisting of titanium oxide, tin oxide, and zirconium oxide, and have an average particle diameter of 5 to 60 nm as determined by dynamic light scattering. The photoactive metal oxide particles (A) contain at least one photoactive metal oxide selected from the group consisting of titanium oxide, tin oxide, and zirconium oxide in an amount of 50% by mole or more in the entire metal oxides.

A nanocomposite catalyst includes a support, a multiplicity of nanoscale metal oxide clusters coupled to the support, and one or more metal atoms coupled to each of the nanoscale metal oxide clusters. Fabricating a nanocomposite catalyst includes forming nanoscale metal oxide clusters including a first metal on a support, and depositing one or more metal atoms including a second metal on the nanoscale metal oxide clusters. The nanocomposite catalyst is suitable for catalyzing reactions such as CO oxidation, water-gas-shift, reforming of CO.sub.2 and methanol, and oxidation of natural gas.

Described herein are zeolite Beta particles with radially arranged mesopores and methods of making the same. In one or more embodiments, a zeolite Beta particle may include a Beta zeolitic framework including a plurality of micropores having diameters of less than or equal to 2 nm. In embodiments, the Beta zeolitic framework may include alumina and silica. In embodiments, the zeolite Beta particles disclosed herein may include a plurality of mesopores having diameters of greater than 2 nm and less than or equal to 50 nm. In embodiments, the plurality of mesopores may be arranged in a center-radial configuration, such that mesopores run from a central region of the zeolite Beta particle towards the edge of the zeolite Beta particle.

A production method for fine metal particles includes a step of preparing metal particles and a step of supplying the metal particles with a feed gas containing a hydrocarbon, wherein the contact between the feed gas and the metal particles is carried out at a temperature of 600 C. to 900 C.

A hydrogenation catalysts and methods of using them in hydrogenation is disclosed. More particularly, the present invention relates to hydrogenation catalysts useful for selectively hydrogenating acetylene and methylacetylene, especially in front-end streams, and methods of making and using them.

The present invention relates to catalytically active material, comprising grains of non-graphitizing carbon with iron nanoparticles dispersed therein, wherein d.sub.p, the average diameter of iron nanoparticles in the non-graphitizing carbon grains, is in the range of 1 nm to 20 nm, D, the average distance between iron nanoparticles in the non-graphitizing carbon grains, is in the range of 2 nm to 150 nm, and , the combined total mass fraction of metal in the non-graphitizing carbon grains, is in the range of 30 wt % to 70 wt % of the total mass of the non-graphitizing carbon grains, and wherein d.sub.p, D and conform to the following relation: 4.5 d.sub.p/>D0.25 d.sub.p/. The present invention, further, relates to a process for the manufacture of material according to the invention, as well as its use as a catalyst.