A gel particle film of amino group-having polymer compound particles has a large acid gas absorption amount and desorption amount per unit volume, and has a high acid gas absorption rate and desorption rate per unit mass, and further has high stability. A gas absorber having the gel particle film supported on a carrier is useful as an acid gas separation material having good energy efficiency.

The invention is directed to utilization of a series of cross-linked 1,4-benzenediamine-co-alkyldiamine polymers and the use of the polymers to remove mercury from a hydrocarbon in fluid form.

A composite sorbent composition comprising a polymeric adsorbent; and an extractant having the formula, or a hydrate thereof, wherein Z is —C(O)— or —C(R′)(R″)— wherein R′ and R″ are each hydroxyl; and R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are each independently hydrogen, halogen, hydroxyl, cyano, nitro, amino, —C(O)H, —C(O)OH, —C(O)NH.sub.2, alkyl, alkenyl, alkynyl, alkoxy, alkanoyl, alkylamino, alkyl carboxamide, alkyl ester, heteroalkyl, haloalkyl, haloalkoxy, cycloalkyl, aryl, arylalkyl, aryloxy, heterocycloalkyl, heteroaryl, heteroaryloxy, or heteroarylalkyl, each of which R.sup.1, R.sup.2, R.sup.3, and R.sup.4 is unsubstituted or substituted with one or more substituents independently chosen from halogen, hydroxyl, WO 2019/023355 A1 cyano, nitro, sulphonato, amino, —C(O)H, —C(O)OH, —C(O)NH.sub.2, alkyl, alkoxy, alkylamino, heteroalkyl, haloalkyl, haloalkoxy, cycloalkyl, aryl, arylalkyl, aryloxy, heterocycloalkyl, heteroaryl, heteroaryloxy, or heteroarylalkyl; or R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, or R.sup.3 and R.sup.4 are together a group —O—CH.sub.2—O—, a group —CH.sub.2—O—CH.sub.2—, or a group —CH.sub.2—CH.sub.2—CH.sub.2—CH.sub.2—.

##STR00001##

Provided are a ligand-bearing substrate which has a surface at least partially coated with a polymer (P3) containing structural units represented by the formulae (1a) and (1b) (in the formulae, R.sup.1, R.sup.2, X, Y, L, Q.sup.1, Q.sup.2, Q.sup.3, m1, m2 and n are as described in the claims and description); a raw material for such a substrate; and a method for producing such substrates.

Provided is a method of producing a porous body of a water-insoluble polymer, the method being excellent in terms of simplicity and capable of suppressing formation of a skin layer. A method of producing a porous body of a water-insoluble polymer disclosed here includes the steps of: preparing a solution in which a water-insoluble polymer is dissolved in a mixed solvent containing a good solvent for the water-insoluble polymer and a poor solvent for the water-insoluble polymer; coating the solution on a substrate; coating a slurry containing insulating particles, a binder and a dispersion medium on the coated solution; and simultaneously drying the coated solution and the slurry to porosify the water-insoluble polymer. The poor solvent has a boiling point higher than a boiling point of the good solvent. The dispersion medium can dissolve the water-insoluble polymer.

The present disclosure relates, according to some embodiments, to a method for recovery of lithium ions from a lithium-ion containing liquid, the method comprising the steps of coating a nanoparticle with a styrene monomer; polymerizing the styrene monomer to form a poly-styrene-coated nanoparticle; attaching a dibenzo-12-crown-4-ether to the polystyrene-coated nanoparticle to form a lithium adsorbing medium; exposing the lithium ion-containing liquid to the lithium adsorbing medium to form a lithium-rich adsorbing medium; and extracting the lithium ion from the lithium-rich adsorbing medium.

Composite material comprising a support material and at least one polymeric layer, wherein the at least one polymeric layer is present in form of a polymeric mesh and is comprising at least one non-adsorbing/non-adsorptive polymer with respect to a target compound, and wherein said composite material further comprises sites which are adsorbing/adsorptive for an impurity compound; and a combination of at least one first adsorbent and at least one second adsorbent, wherein the at least one first adsorbent comprises at least one composite material comprising at least one adsorbing/adsorptive polymer, or at least one non-adsorbing/non-adsorptive polymer, or at least one adsorbing/adsorptive polymer together with at least one non-adsorbing/non-adsorptive polymer.

An example article includes a substrate and a coating applied to the substrate. The coating includes a stabilizer and an organic phosphonic acid reactant. In an example article, the coating includes a water-soluble polymer and an organic phosphate or phosphonate reactant. An example coating configured to be applied to a basic gas filter substrate includes a water-soluble polymer and an organic phosphate or phosphonate reactant. An example technique includes applying a coating to a substrate and heating at least the coating to a temperature between about 100 C. and about 275 C. for about 1 minute to about 10 minutes. An example system includes a basic gas filter including a coating, and a sensor configured to sense an optical change in the coating.

A coating composition and method for the mitigation of pollutants using the coating composition. The coating composition is effective to reduce the re-emission of pollutants from a surface that is imbibed with the pollutants. Pollutants that can be mitigated include those found in tobacco smoke and marijuana smoke, such as ammonia, 2-butatone (MEK), benzene and naphthalene. The coating composition is effective to mitigate such pollutants over a long period of time as compared to know compositions, and therefore significantly reduce the emission of thirdhand smoke. The coating composition may also increase the fire resistance of the surface.

Disclosed in certain embodiments are carbon dioxide sorbents that include porous particles impregnated with an amine compound.