The invention relates to a solid porous article having a crosslinked thermoplastic binder interconnecting one or more types of interactive powdery materials or fibers. The interconnectivity is such that the binder connects the powdery materials or fibers in discrete spots rather than as a complete coating, allowing the materials or fibers to be in direct contact with, and interact with a fluid. The resulting article is a formed multicomponent, interconnected web, with porosity. The separation article is useful in water purification, as well as in the separation of dissolved or suspended materials in both aqueous and non-aqueous systems in industrial uses, gas storage.

Nanosheets of Ca.sup.2+ and Y.sup.3+, with CO.sub.3.sup.2− in the interlayer with a uniform diameter and lengths of several tens of microns have been successfully synthesized in a hydrotalcite layer structure (a layered double hydroxide), using a hydrothermal method. The formation mechanism of lamellar CaY—CO.sub.3.sup.2− layered double hydroxides (LDHs) depends on the molar ratio of Ca and Y and the reaction time and temperature. The resulting LDH materials exhibit excellent affinity and selectivity for heavy transition metal and metalloid ions.

Chromatography method in which a gaseous, liquid or supercritical mobile phase containing species to be separated is circulated through a packing, said packing being characterized in that: —it comprises a plurality of capillary ducts extending in the packing between an upstream face through which the mobile phase enters the packing and a downstream face through which the mobile phase leaves the packing—the material of the walls comprises a first population of connected pores, providing passages from one duct to the next enabling molecular diffusion to take place between adjacent ducts, pores having a mean diameter (d.sub.pore) of greater than 2 times the molecular diameter of at least one species to be separated—the diameter of the ducts is less than 50 μm.

Carbon dioxide (CO.sub.2) capture materials comprising one or more 3D-printed zeolite monoliths for the capture and or removal of CO.sub.2 from air or gases in enclosed compartments, including gases or mixtures of gases having less than about 5% CO.sub.2. Methods for preparing 3D-printed zeolite monoliths useful as CO.sub.2 capture materials and filters, as well as methods of removing CO.sub.2 from a gas or mixture of gases in an enclosed compartment using 3D-printed zeolite monoliths are provided.

An adsorbent composition for removing chlorides from hydrocarbon includes an adsorbent matrix and a metallic component. The metallic component forms an intimate complex with the adsorbent matrix. The adsorbent composition is characterized by pore size in the range of 20 Å to 120 Å. It is found that the amount of chlorides removed by the adsorbent composition from the hydrocarbon is in the range of 0.020 wt. % to 0.047 wt. %.

Metal-organic frameworks (MOFs) are highly porous entities comprising a multidentate ligand coordinated to multiple metal atoms, typically as a coordination polymer. MOFs are usually produced in powder form. Extrusion of powder-form MOFs to produce shaped bodies has heretofore proven difficult due to loss of surface area and poor crush strength of MOF extrudates, in addition to phase transformations occurring during extrusion. The choice of mixing conditions and the mixing solvent when forming MOF extrudates can impact these factors. Extrudates comprising a MOF consolidated material may feature the MOF consolidated material having a BET surface area of about 50% or greater relative to that of a pre-crystallized MOF powder material used to form the extrudate. X-ray powder diffraction of the extrudate shows about 20% or less conversion of the MOF consolidated material into a phase differing from that of the pre-crystallized MOF powder material.

Disclosed in certain embodiments are hydrocarbon adsorbents and evaporative emission control systems incorporating the same to reduce hydrocarbon bleed emissions from fuel systems. In one embodiment, a hydrocarbon adsorbent structure comprises a zeolite having a silica-to-alumina ratio of at least 20.

Provided are a silicotitanate molded body having high strength and reduced generation of fine powder, a production method thereof, an adsorbent comprising the silicotitanate molded body, and a decontamination method of radioactive cesium and/or radioactive strontium by using the adsorbent. The silicotitanate molded body comprises: crystalline silicotitanate particles that have a particle size distribution in which 90% or more, on volume basis, of the particles have a particle size within a range of 1 μm or more and 10 μm or less and that are represented by a general formula of A.sub.2Ti.sub.2O.sub.3(SiO.sub.4).nH.sub.2O wherein A represents one or two alkali metal elements selected from Na and K, and n represents a number of 0 to 2; and an oxide of one or more elements selected from the group consisting of aluminum, zirconium, iron, and cerium.

A method for producing a polyamide medium for purifying a protein-containing solution, comprising: a step of treating a polyamide medium before a treatment with an acidic or alkaline aqueous solution, with an acidic or alkaline aqueous solution.

A water absorption treatment material includes a core portion and a coating portion. The core portion is approximately circular column-shaped and has a side surface, a first bottom surface, and a second bottom surface. The coating portion is provided so as to cover the core portion. A region of 80% or more of the side surface of the core portion is covered by the coating portion. A region of 80% or more of the first bottom surface of the core portion is exposed without being covered by the coating portion.