377 results about "Mesitylene" patented technology

A method for providing an anhydrous route for the synthesis of amine capped coinage-metal (copper, silver, and gold) nanoparticles (NPs) using the coinage-metal mesityl (mesityl=C₆H₂(CH₃)₃-2,4,6) derivatives. In this method, a solution of (Cu(C₆H₂(CH₃)₃)₅, (Ag(C₆H₂(CH₃)₃)₄, or (Au(C₆H₂(CH₃)₃)₅ is dissolved in a coordinating solvent, such as a primary, secondary, or tertiary amine; primary, secondary, or tertiary phosphine, or alkyl thiol, to produce a mesityl precursor solution. This solution is subsequently injected into an organic solvent that is heated to a temperature greater than approximately 100° C. After washing with an organic solvent, such as an alcohol (including methanol, ethanol, propanol, and higher molecular-weight alcohols), oxide free coinage NP are prepared that could be extracted with a solvent, such as an aromatic solvent (including, for example, toluene, benzene, and pyridine) or an alkane (including, for example, pentane, hexane, and heptane). Characterization by UV-Vis spectroscopy and transmission electron microscopy showed that the NPs were approximately 9.2±2.3 nm in size for Cu°, (no surface oxide present), approximately 8.5±1.1 nm Ag° spheres, and approximately 8–80 nm for Au°.

Solvent mixtures useful for processing bulk heterojunction materials and methods for selecting the same are disclosed, wherein Hansen solubility parameters are utilized to select the solvent mixture. A solvent system using a fully nonhalogenated solvent mixture is disclosed. Also disclosed is a solvent mixture containing 20 vol. % acetophenone (AP) in mesitylene (MS), wherein the performance of the solvent system is comparable to dichlorobenzene.

The present invention provides fully renewable engine fuels derived completely from biomass sources. In one embodiment the fully renewable engine fuel is comprised of one or more low carbon number esters, one or more pentosan-derivable furans, one or more aromatic hydrocarbon, one or more C₄-C₁₀ straight chain alkanes derivable from polysaccharides, and one or more bio-oils. In addition, the fuel may contain triethanolamine. Such a lower octane renewable fuel may be utilized, for example, in automobile fuel, 100 LL aviation fuel applications, and turbine engine applications. These ethanol-based, fully renewable fuels may be formulated to have a wide range of octane values and energy, and may effectively be used to replace 100 LL aviation fuel (known as AvGas), as well as high octane, rocket, diesel, and turbine engine fuels. In another embodiment, there is provided a synthetic high octane aviation fuel comprising isopentane and mesitylene, and process of producing same from a biomass.

The invention discloses a sulfide functionalized covalent organic frame material, The material has a structural unit shown in the specification, and is obtained by the following steps: adding 2,5-Bis(3-(ethylthio)propoxy)-terephthalohydrazide and benzenetricarboxaldehyde into a mixed solvent of 1,4-dioxane and mesitylene, adding an aqueous acetic acid solution into the above mixture and reacting at 120 DEG C for 1-3 days. The material has a mesoporous structure, has BET specific surface area of 470-480 m<2>?g<-1>, has good selective identification for mercury ions, and can be used for removal of the mercury ions.

The invention discloses a microwave auxiliary preparation method of a keto-enamine covalently linked organic framework. The method comprises the following steps: charging 1 , 3 , 5-triformylphloroglucinol and p-phenylenediamine into solvent, and ultrasonically dispersing to form suspension; the solvent is mixed solvent of sym-trimethylbenzene, dioxane and acetum; freezing, by liquid nitrogen, vacuumizing and degassing the suspension for at least three times, then sealing, carrying out the thermal reaction for 1 hour under the assistance of microwaves at the temperature of 100 DEG C, and obtaining a crude product; and centrifuging the crude product, collecting insoluble matters, washing the insoluble matters sequentially by sym-trimethylbenzene and acetone to obtain the keto-enamine covalently linked organic framework, and obtaining the keto-enamine covalently linked organic framework. The method is pollution-free, the reaction condition is moderate and simple, the requirement on equipment is simple, and the method is suitable for the industrialized mass production.

The invention provides a catalyst COF-5 for carbon dioxide photo-reduction and a preparation method thereof. The preparation method includes dissolving hexahydroxytriphenylene and 1,4-benzenediboronic acid in a mass ratio of 16:25 in a mixed solution of dioxane and mesitylene in a volume ratio of 1:1 according to a solvothermal method, and stirring uniformly to obtain a precursor solution; preparing the COF-5 from the precursor solution in a reactor by means of solvothermal heating. The preparation method initiatively synthesizes the COF-5 in the reactor according to the solvothermal method and is simpler and more convenient to operate and less in energy consumption during reaction as compared with a traditional method, and the COF-5 photocatalytic material prepared by the method has excellent CO2 photo-reducing capacity in full light.

The invention relates to a method for separating and producing 1,3,5-trimethylbenzene through hydrocracking heavy aromatic hydrocarbons to mainly solve technical problems of low added value of the heavy aromatic hydrocarbons, and complex flow, low product purity, low yield and the like in separation of 1,3,5-trimethylbenzene monomers from the heavy aromatic hydrocarbons. According to the method, hydrogen type binder-free ten-membered ring zeolite loading 0.005-0.5% by mass of Pt or Pd is adopted as a catalyst, hydrogen and the heavy aromatic hydrocarbons which are raw materials undergo hydrocracking treatment, and 1,2,4-trimethylbenzene and heavy aromatic hydrocarbons having boiling points greater than the boiling point of the 1,2,4-trimethylbenzene in products are returned to a reactor, so BTX aromatic hydrocarbon yield increase and 1,3,5-trimethylbenzene separation production are realized. The method well solves the problems, and can be used for the industrial production for yield increases of the BTX (benzene, toluene and xylol) aromatic hydrocarbon and the 1,3,5-trimethylbenzene.

The invention provides a synthesis method of a porous organic covalent frame material with a triazine structure. The synthesis method comprises the steps of in a 1,4-dioxane-mesitylene-acetic acid mixed solvent, carrying out solvothermal reaction on p-phenylenediamine and cyanuric chloride for 70 to 72h at 115 to 120 DEG C, repetitively washing a product through tetrahydrofuran and methyl alcohol,drying, grinding, and obtaining earthy yellow powder which is a target object. The synthesis method provided by the invention has the characteristics of cheap and easy-to-get raw materials, simple synthesis process, mild reaction conditions, low synthesis cost, high yield and the like; the synthesized COF material is large in specific surface area, low in density, and high in nitrogen content, and has a better application prospect in the fields of adsorption, drug release, photoelectricity functions, catalysis and the like.

The invention discloses a method for extracting mesitylene fractions rich in hydrocracking C 9 by combination of continuous lateral line distillation and extractive distillation, comprising the following steps: (1) material hydrocracking C 9 aromatic is added into a continuous lateral line distillation tower, the tower bottom is heated, fractions 2 with a boiling range of 155 DEG C to 170 DEG C, fractions 3 with a boiling range of 170 DEG C to 190 DEG C and fractions 4 with a boiling range of 190 DEG C to 210 DEG C are obtained at the same time after pretreatment, content of mesitylene in the fractions 2 achieves above 90 percent, and a little mesitylene and a great deal of heavy aromatic are contained in the fractions 3 and the fractions 4; (2) the fractions 2 enter an extractive distillation tower, content of mesitylene fractions on the top 5 of the extractive distillation tower achieves above 98 percent, and fractions 6 containing a great deal of extraction solvent and heavy aromatic hydrocarbon are left at the tower bottom; (3) the fractions 6 are treated through a solvent recovery tower, heavy aromatic fractions 7 are left on the top of the solvent recovery tower, a tower reactor extracts solvent, and the solvent flows into the extractive distillation tower for recycling use. The invention only needs one distillation tower, obviously improves the efficiency, and lowers the energy consumption and the cost.

The invention discloses a method for synthesis of an MCM-22 molecular sieve. The method is characterized in that a molecular sieve is synthesized under hydrothermal crystallization conditions; a used template agent contains hexamethylene imine and aniline; and a mole ratio of the hexamethylene imine to the aniline is less than 1.2. The method reduces a hexamethylene imine use amount, reduces a cost, inhibits conversion of the MCM-22 molecular sieve into a ZSM-35 molecular sieve, realizes obvious improvement of a product specific surface area and obviously promotes improvement of a mesitylene saturated adsorption capacity.

The invention relates to a method for preparing mesoporous SBA-15 unstuck micro spheres, in particular a method for preparing mesoporous SBA-15 unstuck micro spheres for high-efficiency liquid chromatography. According to the method, a three-block copolymer P123 is used as a template agent, tetraethoxysilane, hydrochloric acid, potassium chloride, mesitylene, ammonium fluoride and polyvinyl alcohol are used as raw materials, and the dispersity of the mesoporous silica spheres can be regulated by adding polyvinyl alcohol. The mesoporous micro spheres prepared by the method are smooth and unstuck basically, and the addition of poly(vinyl acetate) (PVA) prevents the sticking of the micro spheres without influencing the specific surface area and mesoporous aperture obviously.

The invention provides a 6-mesitylene-6H-6-boron hetero benzo[cd]pyrene derivative containing substituted or non-substituted carbazolyl. Due to the bipolar transmission characteristic, the derivative can effectively balance transmission of carriers and improve transmission efficiency, by using the derivative in phosphorescent organic light-emitting devices as a main material. The invention also provides an organic electroluminescent device that has increased current efficiency, reduced turn-on voltage and good stability, and solves the problems of low transmission efficiency or poor stability of phosphorescent organic light-emitting main materials in the prior art.

The invention discloses an alkylated solid acid catalyst and a preparation method thereof, and relates to an alkylated solid acid catalyst for a process of preparing mesitylene by mixed C9 aromatic hydrocarbon through alkalation separation and a preparation method thereof. The catalyst has higher alkylation conversion rate of the mixed C9 aromatic hydrocarbon and yield of the mesitylene under high temperature and normal pressure conditions. The catalyst takes heteropoly acid as a main active constituent, modified zirconium oxide as a carrier and alkali metal or rare earth element metal as a modifying agent; and calculated as the weight of zirconium oxide, the adding amount of the alkali metal is between 0.01 and 10 weight percent, the adding amount of the rare earth element metal is between 0.01 and 10 weight percent, the loading capacity of the heteropoly acid is between 5 and 30 weight percent, and the balance being the carrier.

The invention discloses an ionic liquid type monophosphine monoimidazolium salt nickel (II) complex and preparation and application thereof. The chemical molecular formula of the monophosphine monoimidazolium salt nickel (II) complex is (Ph3P)Ni{[(RNCHCHNR)CH]X}X2, wherein R is selected from one of C1-C4 saturated alkyl, phenmethyl, 2,6-diisopropylphenyl and mesitylene; and X is halogen and selected from one of chlorine, bromine or iodine. The monophosphine monoimidazolium salt nickel (II) complex has good catalytic activity on Kumada cross-coupling reaction between aryl Grignard reagent and aryl halide or halogenated pyridine.

Mesitylene is difficult to separate from 1,2,4-Trimethylbenzene because of the proximity of their boiling points. They are readily separated by azeotropic distillation. Effective agents are isopropyl acetate, 2-pentanol and acetonitrile.