1627 results about "Mesoporous material" patented technology

The present application is directed to a method and system for preparing gaseous utility streams from gaseous process streams, particularly, removing oil contamination from such streams prior to use in a dry gas seal. The methods and systems may include at least one kinetic swing adsorption process including pressure swing adsorption, temperature swing adsorption, calcination, and inert purge processes to treat gaseous streams for use in dry gas seals of rotating equipment such as compressors, turbines and pumps and other utilities. The adsorbent materials used include a high surface area solid structured microporous and mesoporous materials.

The invention provides mesoporous spherical alumina and a method for preparing the mesoporous spherical alumina by guiding of a template. By the adoption of an oil column forming method, the template with a guiding function is added into aluminum sol during the aluminum sol preparation process; and during the forming and aging processes of the aluminum sol, due to the existence of the template with the guiding function, a large number of meso-structures are prepared in alumina balls. The mesoporous spherical alumina has the following characteristics of: its specific surface is 150-300 m<2>/g; particle diameter is 0.1-5 mm; pore volume is 0.7-1.5 ml/g; holes, hole diameter of which is 2-40 nm, are greater than 97%; bulk density is 0.30-0.80g/cm<3>; and crushing strength is 70-250 N/granule. The mesoporous spherical alumina can be used as a catalyst or a catalyst carrier in the petrochemical industry and the industry of fine chemicals.

Disclosed herein is a method of surface-functionalizing a porous organic-inorganic hybrid material or a organic-inorganic mesoporous material, in which organic substances, inorganic substances, ionic liquids and organic-inorganic hybrid substances are selectively functionalized on the coordinatively unsaturated metal sites of a porous organic-inorganic hybrid material or organic-inorganic mesoporous material, and thus the porous organic-inorganic hybrid material can be used for adsorbents, gas storage devices, sensors, membranes, functional thin films, catalysts, catalytic supports, and the like, and the applications of the surface-functionalized porous organic-inorganic hybrid material prepared using the method to catalytic reactions.

A process for hydrogenating benzenepolycarboxylic acids or derivatives thereof, such as esters and/or anhydrides, by bringing one or more benzenepolycarboxylic acids or one or more derivatives thereof into contact with a hydrogen-containing gas in the presence of one or more catalytically active metal, such as platinum, palladium, ruthenium or mixtures thereof, deposited on a catalyst support comprising one or more ordered mesoporous materials.

Mesoscopically ordered, hydrothermally stable metal oxide-block copolymer composite or mesoporous materials are described herein that are formed by using amphiphilic block polymers which act as structure directing agents for the metal oxide in a self-assembling system.

Compositions and methods for making stabilized mesoporous materials. Surfactant-treated mesoporous precursor materials can be heat-treated in the presence of steam and/or ammonia in a heat-treating environment. The steam and/or ammonia can be introduced into the heat-treating environment via in situ and/or ex situ sources. Such stabilized mesoporous materials can have increased structural stability.

The invention concerns a heat-stable ordered mesoporous or mesostructured material comprising a mineral phase wherein are dispersed particles of nanometric dimension at least partly crystaline, the global crystallinity index of said mesostructured or ordered mesoporous material being less than 10% in volume. The invention also concern a method for obtaining such a material.

A method for preparing transparent mesostructured inorganic/block-copolymer composites or inorganic porous solids containing optically responsive species with selective optical, optoelectronic, and sensing properties resulting therefrom. Mesoscopically organized inorganic/block copolymer composites doped with dyes or complexes are prepared for use as optical hosts, chemical/physical/biological sensors, photochromic materials, optical waveguides, tunable solid-state lasers, or optoelectronic devices. The materials can be processed into a variety of different shapes, such as films, fibers, monoliths, for novel optical and sensing applications.

A process for treating organic compounds includes providing a composition which includes a substantially mesoporous structure of silica containing at least 97% by volume of pores having a pore size ranging from about 15 Å to about 30 Å and having a micropore volume of at least about 0.01 cc/g, wherein the mesoporous structure has incorporated therewith at least about 0.02% by weight of at least one catalytically and/or chemically active heteroatom selected from the group consisting of Al, Ti, V, Cr, Zn, Fe, Sn, Mo, Ga, Ni, Co, In, Zr, Mn, Cu, Mg, Pd, Pt and W, and the catalyst has an X-ray diffraction pattern with one peak at 0.3° to about 3.5° at 2θ. The catalyst is contacted with an organic feed under reaction conditions wherein the treating process is selected from alkylation, acylation, oligomerization, selective oxidation, hydrotreating, isomerization, demetalation, catalytic dewaxing, hydroxylation, hydrogenation, ammoximation, isomerization, dehydrogenation, cracking and adsorption.

The invention provides a mesoporous material/microporous molecular sieve composite material and a preparation method thereof. The composite was prepared by in situ crystallization of porous clay heterogeneous materials (PCHs) mixed with microporous molecular sieve gels. In the composite material prepared by the invention, the microporous molecular sieve is wrapped around the porous clay heterogeneous material. The composite material has both the crystal structure of microporous molecular sieves and the mesoporous structure of porous clay heterogeneous materials, and has high mechanical stability, thermal and hydrothermal stability, and is superior to existing mesoporous molecular sieve/microporous molecular sieve composite materials. There are broader application prospects.

The invention discloses a novel mesoporous material for adsorbing tar, phenol and special nitrosamine in tobacco and so on, in mainstream smoke of the tobacco. The mesoporous material with high adsorption property is used as an addition material for filter tips of cigarettes; and the mesoporous material is a mesoporous molecular sieve with a three-dimensional mesh microstructure and monolithic appearance such as SBA-15,or is a SBA-15 mesoporous molecular sieve material which is plated with a liquid film or is modified by metal oxides such as zirconia and is provided with the three-dimensional mesh microstructure and the monolithic appearance. The invention adopts a more convenient and effective method to develop the SBA-15 mesoporous molecular sieve material with the three-dimensional mesh microstructure and the monolithic appearance and modify the surface/a surface layer, has good performance of intercepting environmental toxins such as interception particulate phase matters and phenol in smoke, has the characteristics of saving energy, saving time, and reducing environmental pollution during the preparation, can also reduce cost, and has remarkable economic benefit and social benefit.

The invention discloses a supported ionic liquid catalyst. The supported ionic liquid catalyst is characterized in that imidazole is immobilized onto chloromethylated FDU mesoporous phenolic resin by nucleophilic reaction and reacts with halides containing different functional groups to prepare a mesoporous material supported functional imidazole type ionic liquid catalyst. The preparation of the catalyst comprises the following steps: chloromethylation of a mesoporous material, imidazolation and supporting of ionic liquid. The catalyst is used for synthesizing a cyclic carbonate by cyclic addition reaction of carbon dioxide and an epoxy compound, and the using quantity of the catalyst is 0.1-2mol% of the liquid content of the epoxy compound. Compared with the prior art, a large number of hydroxyl groups exist in the mesoporous material, and the supported ionic liquid catalyst has the double advantages of an inorganic mesoporous material and an organic polymer, as well as large specific surface area, adjustable pore structure, good hydrophobicity and chemical stability, high catalytic activity, good chemical selectivity, easiness in separation and recovery, mild reaction conditions, environmental friendliness and easiness in industrial implementation.

The present invention relates to compositions and methods for treating and improving the aesthetic appearance of a biological surface by altering the optical properties of the biological surface, thereby resulting in a natural appearance. The compositions of the invention may be topically applied to the biological surface, including but not limited to skin, in an amount effective in improving the aesthetic and natural appearance of the biological surface.

The invention discloses a mesoporous material-based composite phase change heat storage material and a preparation method thereof. The composite phase change heat storage material, which can still keep fixed shape even at the temperature higher than the melting point of phase change substance by 30 DEG C, is prepared by using mesoporous material as carrier matrix and organic substance as phase change substance according to methods of physical blending and impregnation. Compared with other technologies, reported in documents, for the preparation of shape-fixed composite phase change material, the preparation technology has the characteristics of great simplicity and saving time, and the prepared composite phase change heat storage material has high content of the phase change material, high latent heat of phase change and utilization rate of the latent heat, and obviously lowered phase change temperature.

The invention discloses a cracking catalyst. The character is in that the catalyst has one kind of mesoporous material which is the (0-0.3)Na2O .(40-85)Al2O3 .(10-55)SiO2 .(1-20)MxOy, the metal M is one element in IB, IIB,IVB,VB,VIB,VIIB,VIIIB or lanthanide series rare earth; The x is the highest valence of O, y is the highest valence of M. The structure of the mesoporous material is same as the thin diaspore structure and the specific area is 200-400 square m/g, the hole volume is 0.5-2.0ml/g and the average size is 8-20nm, the most probable size is 5-15nm. The catalyst can be used in the catalytic cracking reaction directly, so it can improve the raw oil and the heavy oil percent conversion but decrease the sulfur content of FCC gasoline.

A hydrocracking catalyst having a support of a composite of mesoporous materials, molecular sieves and alumina, is used in the last bed of a multi-bed system for treating heavy crude oils and residues and is designed to increase the production of intermediate distillates having boiling points in a temperature range of 204° C. to 538° C., decrease the production of the heavy fraction (>538° C.), and increase the production of gasoline fraction (<204° C.). The feedstock to be processed in the last bed contains low amounts of metals and is lighter than the feedstock that is fed to the first catalytic bed.

The present invention is reverse inorganic mesoporous material template process of preparing linear nanometer metal oxide and sulfide array. The preparation process includes first adding metal salt or sulfur source to the template to mix with volatile organic solvent homogeneously, setting in the air for volatizing organic solvent; repeating the said process for many times of filling; directly sintering for decomposing and crystallizing to produce corresponding oxide and sulfide or adding alkali solution directly to make ion inside the hole canal form oxide and hydroxide precipitate; and finally eliminating inorganic template to obtain required ordered linear nanometer metal oxide and sulfide array with great specific surface area. The said process can copy the mesoscopic structure of the inorganic template, and the product has great specific surface area, single mesoporous distribution, high crystallization, excellent optical, electric and magnetic performance.

The invention discloses a highly-efficient humidity controlling material, which consists of the following components of the weight per cent: a biocatalyzer 30 per cent to 40 per cent, mesoporous material with 2nm to 5nm 45 per cent to 55 per cent, superabsorbent resin 5 per cent to 25 per cent. The highly-efficient humidity controlling material is frequently used as textile and walling with humidity controlling range 35 per cent to 75 per cent of the relative humidity. The humidity controlling material has the advantages of high moisture storage capacity, fast absorption and release, stable change of the external environment such as light, heat and pressure, and easy use.

A contaminant adsorption is provided that includes a self-assembled monolayers on mesoporous supports (SAMMS) on a lattice support structure such as sintered metal wire mesh. Individual wire fibers of the sintered wire mesh may have a film coating of mesoporous material that is functionalized for a target metal. The mesh material is formed into filtration elements with or without particulate filtration media. Systems employing such filtration elements in one or multiple stages are also disclosed with an optional acid was stripping system for regenerating SAMMS and to facilitate reclamation of contaminants that can be refined into usable commercial materials.

The invention relates to the field of mesoporous adsorbing materials, in particular to a nuclear shell structure mesoporous heavy metal ion adsorbent capable of magnetic separation. The adsorbent has the following structure: ferroferric oxide particles are used as core particles, amorphous silicon oxide is used as an external mesoporous layer, and a compact silicon oxide intermediate layer exists between the core and the mesoporous layer. The invention also provides a method for preparing the adsorbent. The invention can solve the problems of low filtration separation and centrifugal separation efficiency, complex operation and high cost of the simple mesoporous material, can separate the following materials in wastewater, i.e. can adsorb Hg<2+>, Pb<2+>, Cd<2+>, Zn<2+> and Cu<2+> in the wastewater, and can selectively adsorb the Hg<2+> in the wastewater.

The invention belongs to the field of waste reutilization, and relates to a preparation method of fly-ash-based SBA-15, and the preparation method comprises the following steps: firstly, mixing fly ash and an alkali, then melting, and cooling to obtain a mixture; then adding distilled water into the mixture for dissolving, filtering to take supernatant for standby use, wherein the supernatant is an aluminosilicate solution; then, dissolving surfactant P123 in the distilled water, regulating the pH to acidic, fully stirring; then aging, filtering, washing, drying, roasting and cooling to obtain the powder-like mesoporous material fly-ash-based SBA-15. The fly-ash-based SBA-15 prepared by the method has a regular two-dimensional hexagonal structure, has a pore volume of 0.6-0.9cm<3>/g, a specific surface area as high as 800m<2>/g, and a pore diameter of 5-8nm. The method is simple, and is less in environment pollution due to use of effective components in waste as a silicon source.