A chiral stationary phase comprises a porous framework material and biomolecules. The porous framework material includes one of the metal-organic framework (MOF) material, the covalent organic framework (COF) material and the hydrogen-bonded organic framework (HOF) material. The biomolecules are biological chiral resolving agents. A pore size of the porous framework material is 0.2-15 nm. The porous framework material serves as a solid carrier. The biomolecules are loaded into the porous framework material. The porous framework material is modified with one or more of carboxyl, hydroxyl, amino, aldehyde, double bonds and mercapto groups.

The present invention relates to novel sulfur-doped carbonaceous porous materials. The present invention also relates to processes for the preparation of these materials and to the use of these materials in applications such as gas adsorption, mercury and gold capture, gas storage and as catalysts or catalyst supports.

A method for separating N.sub.2 from a hydrocarbon gas mixture containing N.sub.2 comprising the steps of: i) providing a bed of adsorbent selective for N.sub.2; (ii) passing the hydrocarbon gas mixture through the bed of adsorbent to at least partially remove N.sub.2 from the gas mixture to produce: (a) N.sub.2-loaded adsorbent and (b) N.sub.2-depleted hydrocarbon gas mixture; iii) recovering the N.sub.2-depleted hydrocarbon gas mixture; iv) regenerating the N.sub.2-loaded adsorbent by at least partially removing N.sub.2 from the adsorbent; and v) sequentially repeating steps (ii) and (iii) using regenerated adsorbent from step (iv); wherein the adsorbent comprises a pyrolized sulfonated macroporous ion exchange resin.

A lithium adsorbent includes an aluminum-based adsorbing material, a binder, and a wetting and dispersing agent. The binder includes at least one of a vinylidene fluoride-chlorotrifluoroethylene (VDF-CTFE) copolymer and a fluoroolefin-vinyl ether copolymer. The wetting and dispersing agent includes one or more of polyethylene glycol, sodium polyacrylate, polyvinyl alcohol, and formaldehyde condensate.

A biochar-derived adsorbent preferably from Sargassum boveanum, macroalgae can be used for removing phenolic compounds, such as 2,4,6-trichlorophenol and 2,4-dimethylphenol, from aqueous solutions. The carbonization can improve the removal capability of the macroalgae adsorbent for such phenolic compounds with removal efficiencies of 60% or more from high salinity seawater and 100% from distilled water. The adsorption may occur through a mixed mechanism dominated by physisorption following pseudo second-order kinetics. The adsorption of the phenolic molecules may be spontaneous, endothermic and thermodynamically favorable.

The present disclosure is directed to methods and systems of purifying solvents. The purified solvents can be used for cleaning a semiconductor substrate in a multistep semiconductor manufacturing process.

The present disclosure is directed to surface modified materials such as stationary phase materials for performing size exclusion chromatography. Aspects of the present disclosure feature materials surface modified with a moiety including a polyethylene glycol (PEG) functionality and a moiety comprising a diol functionality. Such surface modified materials exhibit a reduced propensity for ionic and hydrophobic secondary interactions.

A biochar-derived adsorbent preferably from Sargassum boveanum, macroalgae can be used for removing phenolic compounds, such as 2,4,6-trichlorophenol and 2,4-dimethylphenol, from aqueous solutions. The carbonization can improve the removal capability of the macroalgae adsorbent for such phenolic compounds with removal efficiencies of 60% or more from high salinity seawater and 100% from distilled water. The adsorption may occur through a mixed mechanism dominated by physisorption following pseudo second-order kinetics. The adsorption of the phenolic molecules may be spontaneous, endothermic and thermodynamically favorable.

The invention is directed to an adsorbent comprising: a) 20-30% porous carbon with incorporated organic nitrogen species; and b) 70-80% inorganic matter. The invention is directed to a method of making an adsorbent which comprises: a) thermally drying dewatered sewage sludge to form granulated organic fertilizer; and b) pyrolyzing said the organic fertilizer at temperatures between 600 and 1000° C. The invention is additionally directed to the process of removing acidic gases from wet air streams comprising putting an adsorbent in contact with the wet air stream and allowing the adsorbent to adsorb the acidic gases.

Provided is an adsorption member excellent in adsorption ability for a foulant having a relatively small molecular weight. The adsorption member includes a plurality of flow channels through which water to be treated passes, and partition walls that partition the flow channels from one another. The partition walls each include a porous ceramic substrate having a communication holes that allow the water to be treated to pass between the adjacent flow channels, and a layer made of particles of a metal oxide fixed to surfaces of the flow channels and surfaces of the communication holes. In the partition walls, a ratio (B/A) of a total pore specific surface area B of pores having a diameter of 6 nm or more and 10 nm or less as measured using a mercury intrusion method to a total pore specific surface area A of pores having a diameter of 1 nm or more and 100 nm or less as measured using a gas adsorption method is 49.3% or more.