11results about "Potassium organic compounds" patented technology

The invention relates to a method for synthesizing a 3, 3-dimethoxy cyclobutane-1, 1-isopropyl diformate compound IV, and the reaction is as follows: M is selected from potassium, sodium, lithium, calcium and magnesium; comprising the following steps: (1) carrying out salt forming reaction on a compound shown as a formula I in an organic solvent in the presence of alkali, and filtering after the reaction is completed to obtain a solid compound shown as a formula II; and (2) carrying out ring closing reaction on the solid compound as shown in the formula II and a compound as shown in a formula III in an aprotic solvent in the presence of a catalyst to obtain a compound as shown in a formula IV. The method is simple in synthesis route, mild in process condition, simple and convenient to operate, high in yield and good in product purity, solves the technical problems of tar impurities and alcohol ester exchange byproducts in the prior art, and is suitable for industrial large-scale production.

Metal-organic frameworks (MOFs) may be prepared to contain a high loading of one or more hydrophobic adsorbates therein. Suitable metal-organic frameworks may exhibit stable retention of hydrophobic adsorbates within the pore space of the MOF, such as MOF loadings of at least 20% without appreciable environmental leaching over 24 hours. Certain hydrophobic adsorbates may exhibit unexpectedly higher photostability and UV absorption as compared to the respective free hydrophobic adsorbates.

To provide a composition for an electrolytic solution capable of suppressing resistance increase during low-temperature storage, and to provide an electrochemical device, a secondary battery and a lithium ion secondary battery using the composition for an electrolytic solution. Also provided are novel compositions.SOLUTION: A composition for an electrolytic solution, comprising a compound (M) represented by the following formula (M): (M) Rf1-COOM (wherein Rf1 is a fluoroalkyl group having 1 to 6 carbon atoms, and M is an alkali metal other than Li). ) SELECTED DRAWING: None

The present application relates to a series of compounds methyl trifluoroborate and methyl trifluoroborate nonlinear optical crystal and preparation method and use, the molecular general formula of the series of compounds is A3[CH3BF3]X2, wherein A=NH4, K, Rb, Cs, X=[NO3], Cl, Br, the molecular weight is 207.86-641.37, top seed method is prepared, orthorhombic system, space group Cmc 21 (No.36), the cell parameter is a=11.9141 (17)-12.6254 (2) Å, b=8.1556 (12)-8.4654 (17) Å, c=10.9621 (14)-11.5625 (15) Å, α =90, β =90, γ =90, Z =4, V=1065.2 (3)-1261.9 (1) Å 3 The series of compounds methyl trifluoroborate nonlinear optical crystal obtained by the method has the advantages of wide light transmission waveband, stable physical and chemical properties, moderate mechanical hardness, not easy to break, easy to cut, polish processing and preservation and the like.

The application discloses a kind of dimethylene pyridine bridged double aminophenol alkali metal complex and its preparation method and application in high activity catalytic lactone ring-opening polymerization.The preparation method includes the following steps: dimethylene pyridine bridged double aminophenol ligand is reacted with metal hydride in organic medium, then is filtered, concentrated, and the target dimethylene pyridine bridged double aminophenol alkali metal complex is obtained by recrystallization step.The dimethylene pyridine bridged double aminophenol alkali metal complex of the application is a kind of high-efficiency lactone ring-opening polymerization catalyst, and can be used for the polymerization reaction of high activity catalytic lactide etc.The dimethylene pyridine bridged double aminophenol alkali metal complex of the application has very obvious advantages: raw material is easy to obtain, synthesis route is simple, has high catalytic activity, can obtain high molecular weight polyester material, meets the needs of industrial department.The structural formula is as shown below:

The present invention relates to the use of alkali-metal phenolic compounds of formula (I) or (II) as catalysts in ring-opening polymerisation of heterocycles, such as cyclical esters, ethers and carbonates, for the industrial production of biodegradable polymers. The present invention also relates to a polymerisation method using the compounds.

Covalent organic frameworks (COFs), methods of making the COFs, and metal-ion batteries incorporating the COFs as solid electrolytes are provided. The COFs comprise a crosslinked core that includes triazine groups crosslinked to phenylene groups. Anionic substituents covalently bonded to the benzene rings of the phenylene groups in the crosslinked core provide immobilized hopping sites that lower the energy barrier for the migration of metal cations through the COF. The low migration energy barriers and directional channels within the COFs impart the COFs with a high ionic conductivities, even the absence of additional salts and solvents. The metal cations can be installed in the COFs during a one-step synthesis from available reactants.

Metal-organic frameworks (MOFs) may be prepared to contain a high loading of one or more hydrophobic adsorbates therein. Suitable metal-organic frameworks may exhibit stable retention of hydrophobic adsorbates within the pore space of the MOF, such as MOF loadings of at least 20% without appreciable environmental leaching over 24 hours. Certain hydrophobic adsorbates may exhibit unexpectedly higher photostability and UV absorption as compared to the respective free hydrophobic adsorbates.

A composition (100) for pan fire suppression is disclosed. The composition includes one or more chemicals adapted to suppress pan fire. The one or more chemicals includes 35-60 percent by weight of potassium acetate (120), 2-12 percent by weight of potassium citrate (130), 0-0.5 percent by weight of acticide (140), and 30-70 percent by weight of water (150). The composition (100) is a fire suppressant liquid adapted to extinguish fire when deployed in an oil pan (160) by a user.

The present disclosure relates to various compositions, related systems and articles, and methods of manufacture and use. In certain aspects, the present disclosure relates to compositions comprising nanostructured organic compounds, compositions comprising an organic compound and a metal organic framework embedded within the organic compound, and compositions comprising at least partially crystalline organic compounds and crystalline metal oxides dispersed within the organic compounds, related methods of manufacture (e.g., methods of depolymerizing polymers), methods of use (e.g., energy storage, contaminant removal), articles (e.g., electrodes), and systems (e.g., energy storage systems, systems including such energy storage systems). In certain aspects, the present disclosure relates to compositions comprising a silicon-containing material and a polymer made from an imide monomer, and related systems and articles, and methods of manufacturing and using the same.

The present disclosure relates to a compound represented by the following Formula 1, a polymer electrolyte membrane containing the compound, and a fuel cell having the polymer electrolyte membrane. In the formula, R1 to R4 are each independently a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a fluorine-substituted alkyl group having 1 to 6 carbon atoms, or a fluorine atom, wherein at least one of R1 to R4 is a fluorine atom, A is a divalent linking group, M1 and M2 are each independently potassium or sodium, and n and m are each independently an integer of 1 to 10.