A method for manufacturing an adsorption agent for treating compressed gas, which includes the steps of providing a monolithic supporting structure; producing a coating suspension that includes an adsorbent; applying the coating suspension on the supporting structure to form a coating; applying a thermal treatment to the coated supporting structure in order to sinter the coating.

Provided herein are atmospheric moisture harvester systems, as well as methods using such systems, for capturing water from surrounding air. The systems and methods use adsorbents to adsorb water from the air. For example, the adsorbents may be metal-organic frameworks. The systems and methods desorb this water in the form of water vapor, and the water vapor is condensed into liquid water and collected. The liquid water is suitable for use as drinking water.

Disclosed is a method for preparing an acid-resistant Zr-metal-organic framework (Zr-MOF) material with selective adsorption of hexavalent chromium, which is specifically a method for preparing a MOF material with selective adsorption of hexavalent chromium. The present invention aims to solve the technical problems that the existing MOFs have poor water stability, is unstable in an aqueous solution, and therefore may structurally collapse. In addition, the micropore characteristics of most MOFs have affected the mass transfer rate of the adsorbate, which in turn limits the industrial application thereof. The MOF of the present invention has excellent water stability and acid resistance, showing a strong adaptability and great potential in treating mostly acidic industrial wastewater. As a new functional material for water treatment, the MOF has optimal selective adsorption capacity and a desirable adsorption capacity for hexavalent chromium in water, which improves the recycling and later resource utilization.

A method for producing a modified sawdust sorbent. The method involves sulfonating sawdust with sulfuric acid and oxidizing the sulfonated sawdust with hydrogen peroxide. The method yields a modified sawdust sorbent containing sulfonated and oxidized cellulose. The modified sawdust sorbent has a higher surface area, higher organic dye adsorption capacity, and more rapid organic dye adsorption rate than unmodified sawdust. Also disclosed is a method of using the modified sawdust sorbent for organic dye removal from water.

The method according to this disclosure is a method for separating an unsaturated hydrocarbon having 2 or 3 carbon atoms and a halogenated unsaturated carbon compound formed by replacing at least one of hydrogen atoms included in the unsaturated hydrocarbon with a fluorine atom, from each other and is a method for selectively adsorbing either the unsaturated hydrocarbon or the halogenated unsaturated carbon compound by a porous coordination polymer that includes a metallic ion having a valence of 2 to 4 and an aromatic anion having 1 to 6 aromatic ring(s).

A process for separations and recovery from mixtures via specific adsorption using high-surface area, flexible silica-based nanostructured gel adsorbents and articles of manufacture relating to same.

Metal-organic frameworks for capturing one or more of SO.sub.2, CO.sub.2, and H.sub.2O are disclosed herein. Non-limiting examples of metal-organic frameworks include NbOFFIVE-1-Ni and AIFFIVE-1-Ni, among others. The metal-organic frameworks can be used in applications for removing and/or sensing one or more of SO.sub.2, CO.sub.2, and H.sub.2O from a fluid composition or an environment, either of which can proceed under dry or humid conditions and/or at room temperature.

The novel porous framework materials (such as metal organic frameworks or covalent organic frameworks) having a wide range of applications, which was designed and developed in an inventive manner to resolve issues with respect to a carrier material in a stationary phase of a conventional chiral chromatographic column in which the carrier material has poor stability, a chiral resolving agent has a low loading rate, and the chiral resolving agent is prone to loss or is applied in a restricted manner. The porous framework material efficiently loads a chiral resolving agent (such as proteins, enzymes, or macrocyclic antibiotics) by means of covalent bonding, adsorption, embedding, and crosslinking, such that a variety of efficient and durable chiral stationary phases are prepared to serve as a novel high-performance chromatographic column filler used for chromatographic chiral separation (such as high-performance liquid chromatography or capillary chromatography). The various chiral stationary phases prepared by applying the above technique have high separation efficiency, high stability, and durability, and have been successfully applied to perform efficient separation of different kinds of chiral materials such as chiral amino acids and a chiral drug. The technique greatly widens the application range and extends the service life of a chiral chromatographic separation column.

An organic silica thin film including: organic silica having a light absorbable organic group in a skeleton, wherein the organic group has a local maximum absorption wavelength in a wavelength range of 200 to 1200 nm, a content ratio of silicon and the organic group which constitute the organic silica is in a range of 0.05 to 0.50 based on a ratio of a mass of the silicon to a mass of the organic group ([mass of the silicon]/[mass of the organic group]), the thin film has a textured structure, and an axis direction of the textured structure is a direction substantially perpendicular to a surface opposite to a surface of the organic silica thin film having the textured structure formed therein.

An organic silica thin film including: organic silica having a light absorbable organic group in a skeleton, wherein the organic group has a local maximum absorption wavelength in a wavelength range of 200 to 1200 nm, a content ratio of silicon and the organic group which constitute the organic silica is in a range of 0.05 to 0.50 based on a ratio of a mass of the silicon to a mass of the organic group ([mass of the silicon]/[mass of the organic group]), the thin film has a textured structure, and an axis direction of the textured structure is a direction substantially perpendicular to a surface opposite to a surface of the organic silica thin film having the textured structure formed therein.