摘要:
This disclosure provides methods and devices for quantitating, separating and/or detecting water in a liquid, gas or solid sample comprising one or more chemicals, the method comprising: providing the liquid, gas or solid sample comprising water and the one or more chemicals; and exposing said liquid, gas or solid sample to at least one solid support including at least one dicationic and/or tricationic species of Formula I or II adsorbed, absorbed or immobilized on the solid support.
摘要:
Method and systems are provided for the removal of metal contaminants from aqueous mediums using a chamber containing activated sorptive media and a primary ligand and optionally, a secondary ligand that has been loaded onto the activated sorptive media using hydraulic loading. In at least one embodiment, the methods and systems include a pre-treatment of the sorptive media, a specific volume of the activated sorptive media within the chamber, specific pH ranges of aqueous mediums, and hydraulic loading of the primary ligand and optionally, a secondary ligand, known as dynamic fluidized loading. In at least one embodiment, pore pressures of the seeding solution within the media are at least sufficient to overcome the gravitational forces acting on the media within the column. The methods and systems provide for a highly uniform and predictable loading of the primary ligand and optionally, the secondary ligand, onto the activated sorptive media throughout the sorptive media within the chamber. Thus, the methods and system provide for effective sorption and increased capacity for metal removal from aqueous mediums.
摘要:
The invention relates to an activated carbon, in particular an activated carbon with reactive and/or catalytic activity, said activated carbon being in the form of discrete activated carbon particles, preferably in a spherical and/or grain form. The activated carbon is provided with and/or comprises at least one metal component which has at least one metal-containing ionic liquid (IL) containing, in particular metal ions, preferably based on a metal compound. The invention also related to methods for producing said activated carbon, to the uses thereof and to materials provided herewith.
摘要:
The present invention relates to diionic liquid salts of dicationic or dianionic molecules, as well as solvents comprising diionic liquids and the use of diionic liquids as the stationary phase in a gas chromatographic column.
摘要:
Provided herein are immobilized liquid membranes for gas separation, methods of preparing such membranes and uses thereof. In one example, the immobilized membrane includes a porous metallic host matrix and an immobilized liquid fluid (such as a silicone oil) that is immobilized within one or more pores included within the porous metallic host matrix. The immobilized liquid membrane is capable of selective permeation of one type of molecule (such as oxygen) over another type of molecule (such as water). In some examples, the selective membrane is incorporated into a device to supply oxygen from ambient air to the device for electrochemical reactions, and at the same time, to block water penetration and electrolyte loss from the device.
摘要:
The present invention relates to diionic liquid salts of dicationic or dianionic molecules, as well as solvents comprising such diionic liquids and the use of such diionic liquids as the stationary phase in a gas chromatographic column.
摘要:
The present invention provides a method of separating substances utilizing a solid phase wherein a substance fixed to a solid phase can be easily separated without the application of a chemical process, biochemical process, exposure to light, electrical excitation, or the like. Disclosed is a method of separating a reaction product generated by the reaction of a first substance and a second substance comprising the steps of: (a) mixing the first substance with a temperature-sensitive carrier residing in a liquid-phase state; (b) fixing an anchor region of the first substance to the temperature-sensitive carrier by converting the temperature-sensitive carrier to a solid-phase state by changing the temperature of the reaction system; (c) generating a reaction product by reacting the second substance with a reaction region of the first substance that is fixed to the temperature-sensitive carrier; (d) removing impurities from the reaction system; and (e) releasing the anchor region of the reaction product from the temperature-sensitive carrier by converting the temperature-sensitive carrier to a liquid-phase state by changing the temperature of the reaction system.
摘要:
Methods of making permanently wettable superabsorbent material are provided. The permanently wettable superabsorbent materials made by the method have a floating time less than 30 seconds and cause a reduction in surface tension of saline less than about 30%. The methods involve treating the superabsorbent material with a surfactant solution. A surfactant is used that has at least one functional group that is reactive with the superabsorbent material and at least one non-reactive and hydrophilic functional group. The surfactant is applied to the superabsorbent material when the functional groups on the surface of the superabsorbent material are activated. Permanently wettable superabsorbent materials, such as fibers, made by the method and disposable absorbent products comprising the permanently wettable superabsorbent material are also provided.
摘要:
The present invention relates to liquid crystalline alkenes and liquid crystalline polysiloxanes prepared from these alkenes. More precisely, the present invention is related to the development of fused ring aromatic-containing side chain liquid crystal polysiloxanes (SCLCP). These liquids crystalline polysiloxanes are particularly useful as the stationary phase in column chromatography for the separation of various isomeric compounds, including polychlorinated dibenzo-p-dioxins (PCDD), polychlorinated diberizofurans (PCDF), polycyclic aromatic hydrocarbons (PAH), polychlorinated biphenyls (PCB) and polysubstituted benzenes.
摘要:
The present invention relates to a process for producing improved water-absorbent resin particles comprising the step of treating water-absorbent particles, which are crosslinked polymers of ethylenically unsaturated monomers comprising acrylic acid and/or acrylic acid salt as an essential element, with a modified silicone oil having a functional group which can react with a carboxyl group and/or a carboxylate group in the molecule Improved water-absorbent resin particles obtained by the process have a hygroscopic blocking rate of 20 % or less under a relative humidity of 80 % at 40.degree. C., a dust level of 10 CPM or less and an absorbing characteristic of initial absorbency under load to physiological saline of 20 times or more. The present invention provides water-absorbent resin particles which have an improved hygroscopic blocking rate under high humidity and dust generation rate with a good initial absorbency under load and absorbing capacity.