16 results about "Superbase" patented technology

An analytical process for detecting compounds in a sample suspected of containing a peroxide-based compound, a nitrate-based compound, a nitrotoluene-based compound, or a nitramine-based compound includes treating the sample with a superbase and then contacting the sample with a composition. The composition includes or consists of a Ni-porphyrin and an acid and optionally an acid stable solvent.

In one embodiment is provided an energy-efficient post-combustion CO2 capturing process utilizing protic ionic liquids made of an organic superbase and a weak acid in the presence of moisture. The concept is demonstrated in one embodiment with the ionic liquid, 1,8-diazabiclclo(5.4.0)undec-7-enium imidazolate, [DBUH][Im].

The present invention belongs to the field of preparation methods of aliphatic disulfides, and particularly relates to a method for catalytic synthesis of symmetrical dialkyl disulfides, which is implemented according to the following steps: (1) Place a magnetic stirrer bar, measured thiol, sulfur, and an organic superbase catalyst into a reaction flask; (2) Place the reaction flask in an oil bath of a magnetic heating stirrer, install a condenser, and connect the condenser to a drainage bottle through a silicone rubber tube. A saturated aqueous solution of H<subgt;2< / subgt;S is pre-added to the drainage bottle; (3) Start heating and begin stirring the reaction, start timing, and determine the amount of H<subgt;2< / subgt;S released and the reaction termination time by the drainage method to obtain the target product. The reaction conditions of the present invention are mild, the reaction rate is fast, the atomic utilization rate and the yield are high, and the by-product H<subgt;2< / subgt;S gas is easily separated and utilized.

The present technology relates to an ionic plastic crystal comprising at least one delocalized anion paired with at least one an organic guanidine, amidine or phosphazene organic superbase-derived cation for use in electrochemical applications, particularly in electrochemical accumulators such as batteries, electrochromic devices, and supercapacitors. The present technology also relates to an ionic plastic crystal composition, an ionic plastic crystal-based solid electrolyte composition, an ionic plastic crystal-based solid electrolyte, an electrode material comprising the ionic plastic crystal or the ionic plastic crystal composition. Their uses in electrochemical cells and electrochemical accumulators as well as their processes of manufacturing and an NHO-stabilized intermediary ion-neutral complex are also described.

The invention relates to a compound comprising at least two cations derived from a quaternary ammonium or an organic amidine, guanidine or phosphazene superbase, paired with at least two non-delocalized anions. The invention also relates to compositions comprising the compound and a polymer, to membranes comprising the composition, and to processes for producing same.

The application relates to the field of organic chemical materials, in particular to a super base, a preparation method and application in an organic perovskite solar cell. The super base is synthesized through novel molecular design, so that the super base not only plays a role of passivating defects on the perovskite surface, but also can transfer charges, and has a huge application prospect in the perovskite solar cell.

The invention discloses a green silicon wafer chemical mechanical polishing solution and a preparation method thereof, and relates to the technical field of polishing solutions. According to the technical scheme, the grinding fluid is prepared from the following components in percentage by mass: 1 to 10 percent of grinding material, 0.1 to 2 percent of rate accelerant, 0.01 to 0.2 percent of oxidation catalyst, 0.1 to 2 percent of pH buffering agent, 0.002 to 0.05 percent of surfactant and the balance of deionized water, wherein the rate accelerator is an organic super base, and the oxidation catalyst is a free radical oxidant. The green chemical mechanical polishing solution for the silicon wafer can greatly reduce the cost and improve the removal rate and the surface quality of the silicon wafer.

The invention relates to the technical field of flame-retardant bisphenol F type polycarbonate, in particular to a preparation method of high-flame-retardant bisphenol F type polycarbonate. A method for preparing bisphenol F polycarbonate through a melt transesterification method by taking the metal carbonate supported super base as a catalyst is not reported. In order to solve the problems, the invention provides the preparation method of the high-flame-retardant bisphenol F type polycarbonate, which comprises the following steps: by taking bisphenol F and diphenyl carbonate as reaction raw materials and a metal carbonate supported super-strong base catalyst as a reaction catalyst, reacting under the protection of gas, thereby obtaining the high-flame-retardant bisphenol F type polycarbonate. According to the method, high-toxicity phosgene raw materials, a large amount of organic solvents and complex wastewater treatment links which are necessary for a traditional phosgene method are completely abandoned, and major safety and environmental hidden dangers are eliminated from the source.

The invention discloses a DBU-based carbon dioxide efficient capture composite material, which comprises the following components: organic super base DBU as an active component, and a porous polymer, a metal organic framework or a nano carbon-based material as a carrier. According to the present invention, the breakthrough adsorption performance and the adsorption capacity are improved: the dynamic adsorption capacity is greater than or equal to 1.2 mol / kg (under the industrial flue gas condition), and is 1.5 times of the traditional amido material (the traditional material lt; the capacity retention rate after 50 cycles is greater than or equal to 90%, the attenuation rate is reduced by 40% compared with that of a traditional material, the mechanical property is innovated, the strength breaks through that the elastic modulus is greater than or equal to 5 GPa, the compressive strength is greater than or equal to 10 MPa (nanoindentation test), the problem that the traditional material is poor in mechanical property is solved, and the structural stability is that a three-dimensional cross-linked network inhibits DBU loss, and SEM / AFM verifies interface bonding strength. And the problem of crystal capacity attenuation is solved.

The invention relates to the technical field of composite desulfurizers and discloses a composite desulfurizer, comprising a calcium raw material, a magnesium raw material, a hydrophobic strengthening raw material and a desulfurization strengthening raw material, wherein the weight parts of the calcium raw material, the magnesium raw material, the hydrophobic strengthening raw material and the desulfurization strengthening raw material are as follows: 80 parts of the calcium raw material, 30 parts of the magnesium raw material, 10 parts of the hydrophobic strengthening raw material and 5 parts of the desulfurization strengthening raw material; the invention provides the hydrophobic strengthening raw material and the desulfurization strengthening raw material; the hydrophobic strengthening raw material comprises benzene bromide, methyl acrylate, butyltrichlorosilane and ethyl bromoacetate, which can promote the formation of a hydrophobic layer on the surface of calcium oxide, so that the surface has good hydrophobicity, thereby improving the stability of the calcium oxide solid superbase; the desulfurization strengthening raw material comprises cerium powder, yttrium powder, rhenium powder and titanium powder, all of which have a strong affinity for sulfur, thereby optimizing the reaction effect, and the desulfurization efficiency can be greatly improved by the hydrophobic strengthening raw material and the desulfurization strengthening raw material.

The present technology relates to an ionic plastic crystal comprising at least one delocalized anion paired with at least one an organic guanidine, amidine or phosphazene organic superbase-derived cation for use in electrochemical applications, particularly in electrochemical accumulators such as batteries, electrochromic devices, and supercapacitors. The present technology also relates to an ionic plastic crystal composition, an ionic plastic crystal-based solid electrolyte composition, an ionic plastic crystal-based solid electrolyte, an electrode material comprising the ionic plastic crystal or the ionic plastic crystal composition. Their uses in electrochemical cells and electrochemical accumulators as well as their processes of manufacturing and an NHO-stabilized intermediary ion-neutral complex are also described.

The present invention relates to a depolymerization method of a polyurethane mass, preferably, thermoset polyurethane. The method comprises four main steps: i) mixing the polyurethane mass with a depolymerization reaction medium comprising an ionic liquid in a proportion equal to or greater than 50% w / w with respect to the total weight of said medium, a superbase as a catalyst, and a nucleophilic agent in a proportion equal to or less than 15% w / w with respect to the total weight of said medium, subjecting said mixture to a temperature between 50-100° C. for a time comprised between 2 minutes and 10 hours; ii) adding a mass of a protic molecular solvent in an amount between 4 and 40 times more the weight of the depolymerization reaction medium; iii) subjecting the mixture of step ii) to a temperature between 20-60° C. for at least 1 hour; and iv) separating the fractions obtained in step iii); namely, a semisolid fraction comprising at least a polyol mass for reuse in the synthesis of a new polyurethane, and a single-phase liquid fraction comprising at least the ionic liquid and the basic catalyst, for their reuse in a new process for polyurethane depolymerization.

The application belongs to the technical field of polyether preparation, and discloses a solid superbase catalyst and a method for preparing isomeric alcohol polyether by using the same. The solid superbase catalyst comprises a catalyst carrier and a strong base loaded on the catalyst carrier; the strong base is at least one selected from CH3OK, CH3ONa, KOH and NaOH; and the catalyst carrier comprises one of MgO, ZrO2 and Al2O3. The solid superbase catalyst provided by the application is composed of a catalyst carrier and a strong base loaded on the catalyst carrier, and has high catalytic activity and high reaction efficiency. When the solid superbase catalyst is used as a catalyst, isomeric alcohol polyether with low odor, narrow molecular weight distribution and few by-products can be prepared.

The invention belongs to chemical industry, relate to the field of organic luminescent material synthesis technology, the invention discloses a one-pot preparation method of 2,5-diaryl substituted thiophenes, comprising the following steps: 1), CuCl, TMEDA are added to a mixed solvent, heated and stirred, so as to form a complex; then an aryl terminal alkyne is added, a temperature of 50 ± 10 DEG C is maintained and Glaser homo-coupling reaction is carried out with continued stirring to obtain a reaction solution; 2), solid superbase, 1 / 8S8 are added to the reaction solution obtained in step 1), stirring reaction 0.5~12h at N2 atmosphere and room temperature; after completion of the reaction, post-processing is carried out to obtain 2,5-diaryl substituted thiophenes. The preparation method of 2,5-diaryl substituted thiophenes of the present invention has the advantages of high yield, simple operation, mild reaction conditions and low environmental pollution.

The present invention discloses a method for capturing carbon dioxide using a ternary solvent system based on a superbase ionic liquid. The ternary solvent system consists of a superbase ionic liquid, a phenolic organic compound, and an alcoholic organic compound; the molar ratio of the superbase ionic liquid to the phenolic organic compound and the alcoholic organic compound is 1:1-6:2-10, respectively. By adjusting the content of each component in the ternary solvent system, the present invention achieves control of the capture capacity and desorption temperature, providing a simple and easy method for regulating the carbon capture behavior of the solvent.

The present invention discloses a mixed solvent system capable of rapidly and efficiently dissolving all components of lignocellulose, and a dissolution method for dissolving all components of lignocellulose using the mixed solvent system. The mixed solvent system is composed of a mixture of an ionic liquid, ethanolamine, and an organic superbase. Through the synergistic effect of the three components, the ethanolamine dissociates the lignin attached to the carbohydrates, and the organic superbase then further penetrates and swells the cellulose, deconstructing the lignocellulose and promoting the rapid and efficient dissolution of the various components of the lignocellulose in the ionic liquid. The mixed solvent provided by the present invention solves the problems of low dissolution efficiency of all components of lignocellulose in existing solvent systems, high dissolution conditions, and complex dissolution processes.