Provided is an adsorbent for capturing carbon dioxide and a method for manufacturing same, and more particularly, to an adsorbent for capturing carbon dioxide, including a magnesium oxide/titanium dioxide composite having wide surface area, large pore volume and good CO.sub.2 adsorption performance, and a method for manufacturing same. According to the present invention, a novel MgO based composite metal oxide which may stably adsorb CO.sub.2 at a low temperature such as room temperature is provided. The adsorbent for capturing carbon dioxide, including a magnesium oxide/titanium dioxide composite has good thermal stability, and controls basic sites easily, and is used in various fields for capturing carbon dioxide. In addition, by controlling the molar ratio of the metal ions of the magnesium oxide/titanium dioxide composite and controlling morphology, an adsorbent for capturing carbon dioxide having large surface area and pore volume and strong basic sites may be provided.

A carbon dioxide adsorbent includes a porous metal oxide represented by Chemical Formula 1, the porous metal oxide having a specific surface area of greater than or equal to about 30 m.sup.2/g, and an average pore size of greater than or equal to about 2 nm.

A method for separating at least one hydrocarbon from a feed containing a mixture of at least one hydrocarbon and nitrogen, comprising contacting the feed with an adsorbent comprising a porous support wherein the porous support comprises exchangeable cations and at least a portion of the exchangeable cations are organic cations.

Amorphous aluminosilicates are disclosed, and these amorphous aluminosilicates are characterized by a unique combination of high surface area, low oil absorption, and a significant fraction of the total pore volume resulting from micropores. These amorphous aluminosilicates can be used in various paint and coating applications, with the resultant dried or solid film capable of removing VOC's from the surrounding air.

Metal-inorganic frameworks (“MIFs”) having enhanced adsorption capabilities to hydrogen, CO, CO.sub.2, hydrocarbons, and a variety of other guest molecules are disclosed. All linkers in the MIFs contain metal complexes, comprising metal atoms and inorganic or organic ligands, instead of only organic ligands as linkers in metal-organic frameworks (MOFs). Compared to their MOF counterparts, MIFs with carbon-free or carbon-deficient chemical structure are expected to possess enhanced thermal stability, higher catalytic activity, and higher gas affinity and selectivity.

A carbon porous body has a micropore volume, calculated from an α.sub.s plot analysis of a nitrogen adsorption isotherm at a temperature of 77 K, of 0.1 cm.sup.3/g or less, the micropore volume being smaller than a mesopore volume calculated by subtracting the micropore volume from a nitrogen adsorption amount at a nitrogen relative pressure P/P.sub.0 of 0.97 on the nitrogen adsorption isotherm, wherein a nitrogen adsorption amount at a nitrogen relative pressure P/P.sub.0 of 0.5 on the nitrogen adsorption isotherm is within a range of 500 cm.sup.3 (STP)/g or less, and a nitrogen adsorption amount at a nitrogen relative pressure P/P.sub.0 of 0.85 on the nitrogen adsorption isotherm is within a range of 600 cm.sup.3 (STP)/g or more and 1100 cm.sup.3 (STP)/g or less.

An electrospun polymer nanofibrous membrane that provides high filtering efficiency and excellent porosity is disclosed herein. The membrane may be treated with one or more antimicrobial or antiviral agents. The treatment may preferably be a coating of one or more antiviral agents on the surface of the membrane. Alternatively, one or more antiviral agents may be impregnated into the membrane. The membrane may additionally or alternatively be impregnated with one or more metal-organic frameworks (MOFs). The membrane has a high filtering efficiency and sufficient porosity to provide breathability characteristics. In some embodiments, the membrane is suitable for use in making facemasks and respirators that are highly resistant to infectious pathogens and/or other small particulates. In some embodiments, the membrane is suitable for use in HVAC applications. In some embodiments, the membrane is suitable for use in removal of VOCs and CO.sub.2 in conjunction with a carbon nanofiber membrane.

Disclosed are metal organic frameworks (MOFs) for adsorbing guest species, methods for the separation of gases using the MOFs, and systems comprising the MOFs. The MOFs comprise a plurality of secondary building units (SBUs), each SBU comprising a repeating unit of one metal cation connected to another metal cation via a first moiety of an organic linker; a layer of connected adjacent SBUs in which a second moiety of the linker in a first SBU is connected to a metal cation of an adjacent SBU, and wherein adjacent layers are connected to each other via linker-to-linker bonding interactions

The present invention relates to a zeolite-based adsorbent comprising at least one zeolite of FAU structure of LSX type and comprising barium and/or potassium, in which the outer surface area of said zeolite-based adsorbent, measured by nitrogen adsorption, is between 20 m.sup.2.Math.g.sup.−1 and 100 m.sup.2.Math.g.sup.−1, limits inclusive. The present invention also relates to the use of such a zeolite-based adsorbent as an adsorption agent, and also to the process for separating para-xylene from aromatic isomer fractions containing 8 carbon atoms.

Provided is a method for manufacturing a mesoporous inorganic oxide, which includes preparing a mixture of a metal salt selected from the group consisting of at least one kind of alkali metal-containing compound, at least one kind of alkaline earth metal-containing compound, and any combination thereof and an amorphous inorganic oxide; sintering the mixture of a metal salt and an amorphous inorganic oxide; and removing the metal salt contained in the sintered mixture, and a mesoporous inorganic oxide that is manufactured by the above method and is composed of an aggregate of inorganic oxide particles having a size of from 2 nm to 5 nm.

According to the present invention, it is possible to provide a method for manufacturing a mesoporous inorganic oxide which has a simplified manufacturing process, has a short period of manufacturing time of about 1 day, does not generate secondary environmental contaminants to be environmentally friendly, and enables mass production, and a mesoporous inorganic oxide which has a dramatically decreased particle size and thus has an increased specific surface area and increased active sites.