87 results about "Hydrophobic ion" patented technology

The present invention provides a method for extracting and separating lithium isotopes 7Li and 6Li. The method comprises the steps of: preparing a first organic phase: evenly mixing a hydrophobic ionic liquid and a diluent in the volume ratio of 1-15:1-10 by stirring under closed condition; then adding an extractant to form a first organic phase; preparing a first aqueous phase of an aqueous solution of lithium salt with lithium ion concentration of 0.2-5.0mol / L; mixing the first aqueous phase and the first organic phase in the volume ratio of the 1-2:1-4 to form a first extraction system; severely shocking for 5-60 min, and enriching 7Li in the aqueous phase; and then conducting reextraction to obtain 6Li enriched in the organic phase. Compared with the crown ethers and pure ionic liquid system of the prior art, the system has the advantages of low operating costs and strong industry adaptability.

The invention provides a solid-liquid extraction method for extraction separating of a lithium isotope by virtue of a sol-gel material. The method comprises the following steps: forming a mesoporous material through sol-gel by adopting hydrophobic ion liquid, loading benzo-crown ether on the mesoporous material as an extraction agent, carrying out extraction separating on the lithium isotope, extracting a solid-liquid mixture formed by different lithium saline solutions and the solid-phase sol-gel material, collecting water and solid phases, mixing the solid phase after extracting and a hydrochloric acid solution, carrying out reextraction, and collecting a water phase to obtain an aqueous solution of lithium ions, wherein a synergist is the hydrophobic ion liquid, and the extraction agent is benzo15-crown-5. At present, a lithium amalgam method is used for separating the lithium isotope, however, serious environmental safety problem is brought caused by large amount of mercury used in the production process; with the adoption of the method, as the environment-friendly ion liquid and the benzo15-crown-5 are used as the synergist and the extraction agent, respectively, the lithium salt extraction efficiency is improved, and the separation efficacy of the isotope is also high; the used sol-gel phase can be reextracted by hydrochloride, the purpose of recycling is reached, and the production cost is reduced.

The present invention provides novel chromatographic materials, e.g., for chromatographic separations, processes for their preparation and separations devices containing the chromatographic materials. The preparation of the inorganic / organic hybrid materials of the invention wherein a surrounding material is condensed on a superficially porous hybrid core material will allow for families of different hybrid packing materials to be prepared from a single core hybrid material. Differences in hydrophobicity, ion-exchange capacity, chemical stability, surface charge or silanol activity of the surrounding material may be used for unique chromatographic separations of small molecules, carbohydrates, antibodies, whole proteins, peptides, and / or DNA.

Hydrophobic ion pairing (HIP) is applied to solubilize proteins and / or adjuvants in an organic medium. A polymer is cosolubilized in the medium and microspheres encapsulating the protein and / or adjuvant can be produced by a single emulsion method. Microspheres prepared by this method exhibit low initial burst of the protein and gradual release over time, and elicit a strong and comprehensive immune response. Compositions comprising a protein and an adjuvant co-encapsulated in microspheres are provided.

The subject of the invention at hand are novel, a little basic, fluorinated pentafluorophenyl imide anions, which can be used as anions in ionic liquids. Methods for producing ionic liquids are described, which contain these novel pentafluorophenyl imide ions as anions, as well as quaternary organic ammonium ions, guanidinium ions, N-organo-pyridinium ions, imidazolium, imidazolidinium or benzimidazolidinium ions, alkyl-alkylidene phosphoranes or aryl-alkylidene phosphoranes as cations. Alternative methods according to the present invention provide ionic liquids through reaction of ketene N,N-diacetals or alkyl or aryl-alkylidene phosphoranes with acids.The ionic liquids according to the present invention are suitable, for example, as solvents for syntheses, as mobile and / or stationary phase in chromatography, as electrolyte systems for batteries, galvanic elements, fuel cells and rechargeable battery packs.