The invention relates to strong hydrogen-bond acidic sorbents. The sorbents may be provided in a form that limits or eliminates intramolecular bonding of the hydrogen-bond acidic site between neighboring sorbent molecules, for example, by providing steric groups adjacent to the hydrogen-bond acidic site. The hydrogen bond site may be a phenolic structure based on a bisphenol architecture. The sorbents of the invention may be used in methods for trapping or detecting hazardous chemicals or explosives.

The present disclosure provides a porous polymeric membrane that is coated with a cross-linked polymerized monomer. The coating on the porous polymeric membrane has a charge when it is immersed in an organic liquid. The coated porous polymeric membrane, a filter utilizing the membrane, and a method for treating an organic liquid used for photoresist with the coated porous polymeric membrane to remove metal contaminants from the organic liquid are disclosed.

An adsorption apparatus and associated method for capturing an target gaseous adsorbate from an atmospheric air based gaseous feed stream. The adsorption apparatus comprises: a housing enclosing at least one adsorption element for adsorbing the target gaseous adsorbate, the at least one adsorption element comprising at least one substrate coated with an adsorptive composite coating that comprises at least 50 wt % metal organic framework and at least one binder, the housing having an inlet through which the gaseous feed stream can flow to the adsorption element and an outlet through which gas can flow out from the housing; and a desorption arrangement in contact with and/or surrounding the at least one adsorption element, the desorption arrangement being selectively operable between (i) a deactivated state, and (ii) an activated state in which the arrangement is configured to heat, apply a reduced pressure or a combination thereof to the adsorptive composite coating to desorb at least a portion of the adsorbed target gaseous adsorbate from the adsorptive composite coating.

A body can comprise a substrate and a functional layer overlying at least a portion of a surface of the substrate. The functional layer can comprise metal organic frameworks (MOFs) and a binder, the binder including an organic polymer, and an adhesion loss factor (ALF) of the functional layer to the substrate can be not greater than 7%.

The invention discloses a separation matrix which comprises a plurality of separation ligands, defined by the formula R.sub.1-L.sub.1-N(R.sub.3)-L.sub.2-R, immobilized on a support, wherein R.sub.1 is a five- or six-membered, substituted or non-substituted ring structure or a hydroxyethyl or hydroxypropyl group; L.sub.1 is either a methylene group or a covalent bond; R.sub.2 is a five- or six-membered, substituted or non-substituted ring structure; L.sub.2 is either a methylene group or a covalent bond; R.sub.3 is a methyl group; and wherein if R.sub.1 is a hydroxyethyl group and L.sub.1 is a covalent bond, R.sub.2 is a substituted aromatic ring structure or a substituted or non-substituted aliphatic ring structure.

Methods and apparatuses for producing a substrate are described. A method and apparatus for introducing a component into a fluid supply is also presented. A method can include providing a first fluid supply. The fluid supply can be configured as a foam in some embodiments. The method can also include providing a component feed system and a supply of the component. The method can include introducing the component to a fluid supply in an eductor in some aspects. A resultant slurry including a fluid supply and the component can be transferred through a headbox. The resultant slurry can be dewatered to provide a substrate including the component.

Oleophilic-hydrophobic-magnetic (OHM) porous materials are provided. In embodiments, an OHM porous material comprises a porous substrate having a solid matrix defining a plurality of pores distributed through the solid matrix, the OHM porous material further comprising a coating of a nanocomposite on surfaces of the solid matrix. The nanocomposite comprises a multilayer stack of a plurality of layers of a two-dimensional, layered material having nucleation sites interleaved between a plurality of layers of magnetic nanoparticles, wherein individual layers of magnetic nanoparticles in the plurality of layers of magnetic nanoparticles are each directly anchored on a surface of a layer of the plurality of layers of the two-dimensional, layered material via the nucleation sites, and are each separated by multiple layers of the plurality of layers of the two-dimensional, layered material. Methods of making and using the OHM porous materials are also provided.

A lithium ion sorbent includes an organosilane-grafted lithium ion sieve. The organosilane-grafted lithium ion sieve is a reaction product of a lithium ion sieve and an organosilane. The lithium ion sieve is either a delithiated orthosilicate or a delithiated metal oxide. The organosilane reagent is of the general formula: R.sup.1—(CH.sub.2).sub.n—Si—R.sup.4.sub.3 where R.sup.1 is an organic moiety containing a functional group selected from an acrylate, methacrylate or vinyl group or their derivatives, R.sup.4 is either a hydrolysable alkoxy group or a methyl group, where at least one of the three R.sup.4 groups is a hydrolysable alkoxy group and n is 1-3. This lithium ion sorbent is durable and useful for adsorbing lithium from aqueous resources. The lithium ion sorbent can also be used in the manufacture of a composite material where the organosilane-grafted lithium ion sieve is covalently incorporated into a porous crosslinked polymeric support scaffold.

The present disclosure is directed to a coating process for chromatographic surfaces. Embodiments of the present disclosure feature a two-step, vapor-liquid phase organosilane deposition method for creating a hydrophilic, non-ionic surface in a chromatographic system.

An adsorbent composition comprising particles consisting of a core which is at least partially coated with an adsorbent material is disclosed. The core is selected so that it has at least one of: (i) wear resistance; (ii) resistance to corrosive conditions; (iii) at least one thermoplastic material; and (iv) a low porosity. A suitable core material is polystyrene. Adsorbent materials suitable for the coating include activated carbon and metal oxides such as silica and alumina. The adsorbent composition may be used for the adsorption of metals and metal ions in ore processing, for instance for the separation of precious metals such as gold.