An aminated magnesium oxide adsorbent containing a magnesium oxide matrix having disordered mesopores and a BET surface area of 320 to 380 m.sup.2/g, and a polyamine selected from the group consisting of an ethyleneamine having a molecular weight of up to 450 g/mol and a polyethylene imine having a number average molecular weight of greater than 500 g/mol and up to 20,000 g/mol, wherein the polyamine is impregnated within the disordered mesopores of the magnesium oxide matrix. A method of making the aminated magnesium oxide adsorbent and a method of capturing CO.sub.2 from a gas mixture with the aminated magnesium oxide adsorbent are also described.

An aminated magnesium oxide adsorbent containing a magnesium oxide matrix having disordered mesopores and a BET surface area of 320 to 380 m.sup.2/g, and a polyamine selected from the group consisting of an ethyleneamine having a molecular weight of up to 450 g/mol and a polyethylene imine having a number average molecular weight of greater than 500 g/mol and up to 20,000 g/mol, wherein the polyamine is impregnated within the disordered mesopores of the magnesium oxide matrix. A method of making the aminated magnesium oxide adsorbent and a method of capturing CO.sub.2 from a gas mixture with the aminated magnesium oxide adsorbent are also described.

A preparation method for covalent organic framework 5 (COF-5) includes: adding 2,3,6,7,10,11-hexahydroxytriphenylene and 1,4-phenylenebisboronic acid to a mixed solution of 1,3,5-trimethylbenzene and 1,4-dioxane to form a mixture in the anhydrous and oxygen-free environment; and the addition ratio of 2,3,6,7,10,11-hexahydroxytriphenylene: 1,4-phenylenebisboronic acid: 1,3,5-trimethylbenzene: 1,4-dioxane is 0.02-0.8 mmol: 0.08-1.4 mmol: 10-15 mL: 10-15 mL; sealing the mixture in an airtight container; and obtaining a uniform dispersion solution after shaking the container for wholly mixing the components; heating the dispersion solution to a temperature ranging from 80-100° C.; reacting for a period of time ranging from 72-120 h; and obtaining a precipitate after the reaction; and washing the precipitate, drying the precipitate in vacuum, and heating the precipitate at a temperature ranging from 200-300° C. for a period of time ranging from 1-3 h with a protective atmosphere to obtain COF-5 crystal.

A method of encapsulating an engineered pellet in a porous membrane is disclosed. The method includes the steps of: (i) dissolving a membrane solute in a membrane solvent to produce a membrane solution; (ii) applying the membrane solution to a pellet to form a pellet encapsulated with the membrane solution; (iii) subjecting the membrane solution that encapsulates the pellet to a phase inversion and; (iv) drying the pellet to form a porous membrane encapsulated pellet. A porous membrane encapsulated pellet is also described.

The present disclosure relates to improved solid state sorbent materials and methods for controlling and enhancing carbon dioxide adsorption performance for selected metal-organic framework (MOF) materials. The present disclosure further relates to inventive methods using a novel class of diamine-appended metal-organic frameworks MOF absorbents displaying step-shaped adsorption isotherms with large carbon dioxide capacities. More specifically, the present disclosure relates to diamine-appended MOF materials exhibiting step-shaped adsorption isotherms that are employed in a method utilizing humidity to control and improve carbon dioxide adsorption performance. In addition, the present disclosure relates to diamine-appended MOF materials used in a process including a regeneration step with carbon dioxide and humidity level control to achieve deep carbon dioxide removal even from dilute, near ambient condition carbon dioxide streams as well as more concentrated industrial output streams spanning multiple orders of magnitude. The present disclosure also relates to scrubbing apparatus and methods employing the inventive MOF materials, methods, process steps and apparatus as disclosed to achieve rapid and deeper carbon dioxide capture without the need to pretreat column materials.

A hybrid zeolitic imidazolate framework having an isolated purity of at least 95 wt. %, which is a coordination product formed between zinc(II) ions, a linker of formula (I), and a linker of formula (II);

##STR00001##

wherein each linker of formulae (I) and (II) links together adjacent zinc(II) ions, R.sup.1 and R.sup.2 are independently a hydrogen, an optionally substituted alkyl, an optionally substituted aryl, a halo, a nitro, or a cyano, and R.sup.3 and R.sup.4 are independently hydrogen, an optionally substituted alkyl, an optionally substituted aryl, or an optionally substituted arylalkyl. A method of making the hybrid zeolitic imidazolate framework and a method of capturing CO.sub.2 from a gas mixture with the hybrid zeolitic imidazolate framework.

A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described.

A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described.

Methods and devices for providing dialysis treatment are provided. The device comprises a cartridge for providing regenerative dialysis, the cartridge comprising: a body having an inlet and an outlet and defining an interior, the interior including at least a layer comprising urease, a layer comprising zirconium oxide, a layer comprising zirconium phosphate, and a layer comprising carbon, wherein at least two of the layers are blended together to provide a gradient of the two materials.

Methods and devices for providing dialysis treatment are provided. The device comprises a cartridge for providing regenerative dialysis, the cartridge comprising: a body having an inlet and an outlet and defining an interior, the interior including at least a layer comprising urease, a layer comprising zirconium oxide, a layer comprising zirconium phosphate, and a layer comprising carbon, wherein at least two of the layers are blended together to provide a gradient of the two materials.