42 results about "Porous monolith" patented technology

The present disclosure relates to aerosol delivery devices, methods of forming such devices, and elements of such devices. In some embodiments, the present disclosure provides devices configured for vaporization of an aerosol precursor composition that is stored in and/or transported to a heater by a porous monolith, which can be, for example, a porous glass or a porous ceramic. A heater can be in a heating arrangement with an external portion of the porous monolith or can be substantially internal to the porous monolith.

Novel chromatographic materials for chromatographic separations, columns, kits, and methods for preparation and separations with a superficially porous material comprising a substantially nonporous core and one or more layers of a porous shell material surrounding the core. The material of the invention is comprised of superficially porous particles and a narrow particle size distrution. The material of the invention is comprised of a superficially porous monolith, the substantially nonporous core material is silica; silica coated with an inorganic/organic hybrid surrounding material; a magnetic core material; a magnetic core material coated with silica; a high thermal conductivity core material; a high thermal conductivity core material coated with silica; a composite material; an inorganic/organic hybrid surrounding material; a composite material coated with silica; a magnetic core material coated with an inorganic/organic hybrid surrounding material; or a high thermal conductivity core material coated with an inorganic/organic hybrid surrounding material.

The present disclosure relates to aerosol delivery devices, elements of such devices, and methods for producing vapor. In some embodiments, the present disclosure provides devices configured for vaporization of an aerosol precursor composition that is contained in and transported to a heating element by a unitary reservoir and liquid transport element. The unitary reservoir and liquid transport element may include a porous monolith.

The present invention relates to adsorbent honeycomb monoliths and other porous monoliths impregnated with alkaline and/or caustic salts of alkaline metal or alkaline earth metal. The impregnated monoliths have high adsorption capacity and low flow resistance, yet with minimized flammability, suitable for use in removal of acidic, malodorous and/or harmful gases.

An activated catalyst for the rapid decomposition of H₂O₂ is provided wherein a porous high surface area catalyst base, e.g. a zeolite molecular sieve (ZMS) is impregnated or doped with a solution of metal cation salts and an ionic promoter, dried and calcined to form an activated catalyst. Such activated catalyst, in the form of a porous monolith or chunks, extrudate, pieces, pellets, or spheres, can be poured into and confined, in a tight pack, in a cavity of a rocket housing, downstream of a pressurized H₂O₂ tank. The H₂O₂ is flowed through the catalyst and undergoes rapid decomposition into steam and O₂ and flows out the propellant nozzle of such rocket. Advantages of such activated catalyst are that it can be employed to rapidly decompose H₂O₂ to propel a) a mono-propellant rocket, b) a bipropellant rocket (having fuel and a combustion chamber) and c) a hybrid rocket (powered by H₂O₂ and fuel grain) and can also be used for a starter cartridge decomposition catalyst, a gas generator decomposition catalyst and the like. Another benefit of the activated catalyst of the invention is its low weight which is highly suitable in small flightweight rocket systems.

A membrane device comprised of a porous monolith support formed from a reaction-bonded ceramic powder, fired in an oxygen-free atmosphere, the monolith defining a plurality of passageways extending longitudinally from one end face of the monolith to an opposing end face. A semipermeable membrane suitable for separating a feedstock into permeate and retentate is applied to the passageway walls of said monolith. The semipermeable membrane can be selected from the group of membranes suitable for microfiltration, ultrafiltration, nanofiltration, pervaporation, reverse osmosis, and gas separations.

Articles of manufacture and devices and methods of forming and using the same are provided, wherein the article comprises a porous inorganic substrate contained in or bounded by a support made from an inorganic material are provided, wherein said porous substrate and support are heated to a temperature effective to shrink the support onto the porous substrate such that liquid tight contact is formed between the porous substrate and the support. In a preferred aspect, the porous inorganic substrate has a porosity of at least 5%, and is a porous monolith formed using a sol-gel method. The articles thus formed provide a confined fluid flow through the porous substrate, providing superior performance in separations, catalysis, filtration, and the like.

The invention relates to a preparation method for an organic-inorganic hybrid porous monolith material based on epoxide ring-opening reaction. Specifically, the porous organic-inorganic hybrid monolith material is prepared in one step by mixing polyhedral oligomeric silsesquioxanes (POSS), an organic cross-linking agent (an epoxide ring-opening agent), an organic solvent and a pore-forming agent and dissolving under assistance of ultrasound, and then carrying out ring-opening polymerization at a certain temperature. The preparation method has the advantages of simple and rapid operation, and mild conditions. Besides, different organic cross-linking agents (epoxide ring-opening agents) can be selectively used and a pore-forming system can be adjusted according to different application requirements, so that a series of different organic-inorganic hybrid monolith materials can be prepared.

An electroosmotic pump unit includes at least a first pump element, at least a second pump element, and an electrode. Each pump element includes a tube, an electrically grounded fluid inlet, a fluid outlet electrically coupled to the electrode, and a porous monolith immobilized in the tube and having open pores having net surface charges. When the electrode applies a voltage across the monoliths, a fluid supplied to the first pump element flows through the pump elements in a direction from a fluid inlet of the first pump element toward a fluid outlet of the second pump element. A plurality of electroosmotic pump units may be connected in series in a pump assembly. The electroosmotic pump unit, or pump assembly, may be connected to an apparatus such as a HPLC.

The invention relates to a method for preparing an iron ion immobilization affinity chromatography monolith column, which comprises: preparing porous monolith column substrate by polymerization in capillaries with N-hydroxysuccinimide serving as a functional monomer, ethanedimethylethyl acrylate as a crosslinking agent, mixture of cyclohexanol, dodecanol and N,N-dimethylformamide as a porogen andazodiisobutyronitrile as an initiator; bonding carboxyl-containing functional groups on the surface of the monolith column substrate through surface modification for subsequent iron ion immobilization; and immobilizing iron ions by using iron ion containing solution to accomplish the preparation of the iron ion immobilization affinity chromatography monolith column. The invention has the advantages that: the preparation method is simple and convenient; and the micro structure of the obtained substrate material is uniform. Compared with other metal ion immobilization affinity chromatography monolith column, the iron ion immobilization affinity chromatography monolith column prepared by the method has high preparation repeatability, and has stable performance and high specific enriching capacity for phosphorylated peptide fragments.

The invention relates to a photocatalytic carbon dioxide reduction method carried out in liquid and/or gas phase under irradiation, using a photocatalyst containing a first semiconductor, particles comprising one or more metallic-state elements M, and a second semiconductor SC, wherein the method is carried out by contacting a feedstock containing the CO₂ and at least one sacrificial compound with the photocatalyst, then irradiating the photocatalyst such that the CO₂ is reduced, and oxidising the sacrificial compound in order to produce an effluent containing at least in part C1 or above carbon molecules other than CO₂.

The invention relates to the field of macromolecule, specifically to an organic porous integral material and a preparation method and application thereof. Acrylic ester containing unsaturated double bond, a functional monomer containing mercapto group and an initiator are mixed; a photoinitiator is added; the mixed solution undergoes ultrasonic dissolution in a pore forming agent; a free-radical polymerization reaction is carried out under UV-irradiation to in situ form a porous organic integral material, namely an organic porous integral material with different surface properties and functions. The organic porous integral material has a structured microstructure and ordered porous channels and has good application in chromatographic separation. The preparation method has advantages of simple and fast operation, fast reaction speed and the like. In addition, different organic functional monomers and pore forming agent systems can be selected according to different application requirements, and a series of porous organic integral materials with different physical and chemical properties are prepared.

A flow-through ion exchange medium comprising a monolithic stationary phase having interconnecting pores defined by pore walls, and fine ion exchange polymeric layering particles irreversibly bound directly or indirectly to the pore walls, and methods of making such medium and its use on chromatographic separators.

The present invention provides porous monoliths with high flow permeability that can be produced by polymerising and divinylbenzene in the presence of an initiator, a carboxy-functionalized nitroxide stable free radical and polymeric porogens. The monoliths produced with these stable free radicals functionalized with carboxylic groups feature porosities very different from those produced by polymerizations involving other SFRs, characterized by very large surface areas in combination with relatively large through-pores. The invention also provides a method for producing the monoliths, a column containing the monoliths and an assay method using the column.

Provided is a separation membrane manufacturing method capable of easily manufacturing a dense separation membrane. The separation membrane manufacturing method comprises a membrane forming step of forming a separation membrane precursor containing a separation membrane precursor solution on the surface of cells formed in a porous monolith substrate; and a drying step of performing ventilation drying by passing hot air through the cells having the separation membrane precursor in the monolith substrate to dry the separation membrane precursor. During the ventilation drying in the drying step, the temperature of the monolith substrate having the separation membrane precursor is raised to 90° C. within 15 minutes from the start of the passing of the hot air at such a rate of temperature rise that an average rate of temperature rise is 7° C./min or more from the start of the passing of the hot air until the temperature reaches 90° C.

The invention relates to a porous monolith comprising between 20 wt.-% and 70 wt.-% Ti0 2 relative to the total weight of the monolith, and between 30 wt.-% and 80 wt.-% a refractory oxide, selected from silica, alumina or silica-alumina, relative to the total weight of the monolith, characterized in that said porous monolith has a bulk density of less than 0.19 g/mL.