The present disclosure provides methods for producing carboxylated nanocelluloses. Compared with conventional methods, the methods of the present disclosure are simple and cost-effective in the production of carboxylated (or carboxy) nanocelluloses, in embodiments nanofibers and/or nanowhiskers, directly from raw biomass, including lignocellulose wood, non-wood sources, non-lignocellulose wood, lignocellulose or pure cellulose. The carboxy groups on the surface of nanocellulose thus produced can then be easily modified into functional derivatives such as amide, acetate, ether, ester, etc. The resulting nanocelluloses may be used to form purifying agents and/or filters to remove impurities from wastewater.

Methods are provided for synthesizing metal-organic framework compositions using synthesis mixtures with elevated solids content and/or elevated kinematic viscosity. The methods can allow for formation of MOF-274 metal-organic framework compositions, such as EMM-67 (a mixed-metal MOF-274 metal-organic composition). More generally, the methods can allow for formation of MOF structures that include multi-ring disalicylate organic linkers using synthesis mixtures that contain a reduced or minimized amount of solvent, such as down to having substantially no solvent in the synthesis mixture.

The present invention relates to a process for continuous purification of yellow phosphorus by adsorption onto activated carbon.

Provided herein are methods, systems, and devices incorporating use of materials to store, ship, and deliver process gases to micro-electronics fabrication processes and other critical process applications.

The present invention provides an improved sorbent and corresponding device(s) and uses thereof for the capture and stabilization of volatile organic compounds (VOC) or semi-volatile organic compounds (SVOC) from a gaseous atmosphere. The sorbent is capable of rapid and high uptake of one or more compounds and provides quantitative release (recovery) of the compound(s) when exposed to elevated temperature and/or organic solvent. Uses of particular improved grades of mesoporous silica are disclosed.

The present disclosure provides a porous silica having an average pore diameter of from 20 to 450 , a median (D50) pore diameter of from 20 to 450 , a pore volume of from 0.15 to 1.2 cm.sup.3 g.sup.1, a surface area of from 100 to 600 m.sup.2 g.sup.1, and a span of 0.80 or less. The present disclosure also provides a method of producing the porous silica. The method includes the step of mixing together an aqueous phase comprising nanoparticulate silica and an organic phase to form a water-in-oil dispersion or emulsion. The organic phase includes an organic solvent that is insoluble or partially soluble in water and optionally also includes a non-polar organic compound that is insoluble in water and at least partially soluble in the organic solvent. A gelling agent is present in the aqueous phase such that the nanoparticulate silica gels form the porous silica.

Described are methods, devices, and systems useful for adsorbing organometallic vapor onto solid adsorbent material to remove the organometallic vapor from a gas mixture that contains the organometallic vapor and other vapor, particulate materials, or both.

The present disclosure relates to a super absorbent polymer, including: a base resin powder comprising a first cross-linked polymer of a water soluble ethylene-based unsaturated monomer containing acidic groups which are at least partially neutralized; and a surface cross-linked layer comprising a second cross-linked polymer further cross-linked from the first cross-linked polymer and formed on the base resin powder, wherein the first cross-linked polymer is bound to a porous zeolite in which a mesopore having a BET surface area of at least 100 m.sup.2/g and a porosity of at least 0.2 cm.sup.3/g is formed, and a preparation method thereof.

A method of removing a degraded component from a hydrocarbon fluid includes: receiving the hydrocarbon fluid from a fluid source; directing the hydrocarbon fluid to a first porous medium capable of adsorbing the degraded component to produce a purified fluid that has a reduced amount of degraded component as compared to the hydrocarbon fluid; removing the purified fluid from the first porous medium; and regenerating the first porous medium with a regenerant. The porous medium can include a crosslinked polystyrene having at least one of a BET pore volume of greater than or equal to 0.6 mL/g or a surface area of 500 to 900 m.sup.2/g, or 500 to 850 m.sup.2/g as determined in accordance with to ISO 9277:2010.

Crosslinked polymers made up of polymerized units of phenothiazine, pyrrole, and aldehyde. The crosslinked polymers are porous with a BET surface area in the range of 300-600 m.sup.2/g. A method of synthesizing the crosslinked polymers is described. Processes for using the crosslinked polymers as adsorbent materials for adsorbing gases (e.g. CO.sub.2 capturing), and separating fluid mixtures under dry and wet conditions are also introduced.