194 results about "Cycloalkane" patented technology

The invention belongs to the technical field of organic dye synthesis and application, and discloses a conjugated compound containing a benzothiophenazine structure as well as a preparation method and application thereof, and the conjugated compound containing the benzothiophenazine structure has excellent photophysical properties, singlet oxygen yield and superoxide anion generation capacity. The novel conjugated compounds ENBO-NI and ENBS-NI containing benzothiophenazine structures are successfully prepared by replacing a benzene ring of Nile blue with a cycloalkane structure and adjusting the electron donating ability of an R1 group. The two compounds have near infrared fluorescence emission, good solubility and relatively high ROS yield. Compared with a classical photosensitizer NB, the singlet oxygen yield of ENBO-NI is increased by about 117.65%, and the singlet oxygen yield of ENBS-NI is as high as 70%. The absorption wavelength of the conjugated compound is in a red light wave band. The preparation process is simple and efficient, large-scale production is easy, and the preparation method has a wide clinical application prospect.

The invention relates to the technical field of energy storage safety, and particularly discloses flame-retardant cooling liquid, a preparation method of the flame-retardant cooling liquid, an immersed energy storage device, a data center and electric equipment. According to the present invention, the base oil is at least one of the liquid halogenated alkane containing 2-6 carbon atoms, the liquid halogenated olefin, the liquid halogenated ketone and the liquid halogenated cycloalkane containing 3-6 carbon atoms, such that the high biodegradability of the base oil is maintained, the system viscosity is effectively reduced, the heat dissipation performance is improved, the insulating property of the base oil is significantly improved, and the service life of the base oil is prolonged. Meanwhile, the flame retardance is further enhanced. Therefore, the heat management efficiency of the cooling liquid is remarkably improved while environmental protection and safety are considered, and the cooling liquid has a good application prospect.

To provide a compound useful as a material for an organic device such as an organic electroluminescent element.SOLUTION: Polycyclic aromatic compounds having a structure consisting of one or two or more structural unit (s) represented by the formula (1); (Ra1 to Ra3, Rb1 to Rb4, Rc1 to Rc4 are independently H or substituents; provided that at least one of Rc1 to Rc4 is a group represented by the formula (1-1); Y1 is B; and are independently> N-RNX; RNX is substituted / unsubstituted aryl; at least one of the aryl ring and the heteroaryl ring in the above structure may be fused with at least one cycloalkane, and H in the above structure may be replaced by D. X1 X2. ) SELECTED DRAWING: None

The present disclosure relates to an inhibitor for promoting collagen expression, the inhibitor having a structural formula as shown in the following formula (I). The azacycloalkane compound and a pharmaceutical composition thereof provided in the present disclosure have significant Rho kinase inhibitory activity, have better enzymatic activity and cell activity than existing ROCK inhibitors such as Ripasudil, Netarsudil and belumosudil, and have JAK inhibitory activity. Therefore, the compound and composition have great application potential.

The invention discloses a high-yield and low-carbon-deposition regulation and control method and system for a continuous regenerative catalytic reforming reaction. The method comprises the following steps: at the beginning, setting a weighted average inlet temperature for the four-in-one reforming reactor and setting an inlet temperature of each bed layer; measuring the content of naphthenic hydrocarbon in naphtha to be added at the beginning, and setting the initial average pressure of the four-in-one reforming reactor according to the content of naphthenic hydrocarbon in naphtha to be added; naphtha is added into the four-in-one reforming reactor for a reaction; in the reaction process, the weighted average inlet temperature of the four-in-one reforming reactor, the inlet temperature of each bed layer, the catalyst circulation rate and the average pressure are regulated and controlled in real time; and ending the experiment. The method breaks through the critical path of the current technical bottleneck, and has important significance for improving the product selectivity of the continuous regeneration catalytic reforming process, reducing the energy consumption and prolonging the service life of the catalyst.

The invention relates to a method for detecting a clearing agent main agent in gasoline, and the method comprises the following steps: carrying out thin-layer chromatography detection on a to-be-detected sample, and determining the composition of the clearing agent main agent in the concentrated to-be-detected sample according to color spot distribution on an obtained thin-layer chromatography plate, wherein the clearing agent main agent comprises one or more of a polyether amine clearing agent, a polyisobutene amine clearing agent and a Mannich base clearing agent; the thin-layer chromatography detection sequentially comprises developing and developing treatment; a developing agent for developing comprises one or more of a developing agent I, a developing agent II and a developing agent III; the developing solvent I is methanol, and the developing solvent II and the developing solvent III comprise one or more of alcohol with the carbon atom number of 1-6, aliphatic hydrocarbon with the carbon atom number of 5-12 and cycloalkane with the carbon atom number of 5-12. According to the method provided by the invention, whether the clearing agent main agent is added into the sample to be detected or not can be rapidly determined, and the type of the clearing agent main agent can be rapidly and accurately detected.

The invention provides an azacycloalkane compound as shown in a formula I, pharmaceutically acceptable salt, hydrate, isomer, prodrug or a mixture thereof, a pharmaceutical composition containing the azacycloalkane compound, and application of the azacycloalkane compound and the pharmaceutically acceptable salt, hydrate, isomer, prodrug or the mixture thereof in preparation of drugs for preventing, relieving or treating related diseases caused by interaction with Menin-MLL protein.

This invention relates to rare-earth single-atom doped alumina-supported platinum cluster catalysts, their preparation methods, and applications. The catalyst comprises a catalyst support and platinum nanoclusters dispersed on the catalyst support. The catalyst support is an alumina support doped with rare-earth elements in single-atom form. The preparation method includes the following steps: Step 1: preparing a rare-earth-aluminum composite metal oxide precursor; Step 2: preparing a catalyst support; Step 3: loading platinum onto the catalyst support; Step 4: activating the platinum-supported catalyst support. The catalyst is applied in the dehydrogenation reaction of cycloalkane. This invention, by precisely doping rare-earth elements into the alumina lattice in single-atom form, constructs stable rare-earth-oxygen active sites within the lattice, significantly promoting the migration and diffusion of hydrogen atoms from the platinum clusters to the support surface, thereby greatly enhancing the hydrogen spillover effect, improving the utilization efficiency of active hydrogen, and achieving precise control over complex reaction pathways.

The invention discloses a preparation method and application of a Beta molecular sieve catalyst rich in outer surface B acid, and solves the technical problem that the existing efficient catalyst is unstable in structure. The preparation method comprises the following steps: synthesizing the H-Beta carrier rich in the outer surface B acid: drying Beta zeolite raw powder without removing a template agent, then carrying out ion exchange for 2 hours by using an NH4Cl aqueous solution, washing a solid with water, drying, repeating the ion exchange process, and roasting the obtained ion exchange solid at 550 DEG C for 4 hours to obtain the H-Beta carrier rich in the outer surface B acid; and preparing the supported bifunctional catalyst: loading the metal Ir onto the H-Beta carrier rich in the B acid on the outer surface by an equivalent impregnation method. The Beta molecular sieve disclosed by the invention is rich in outer surface B acid, is used for a catalytic reaction for synthesizing high-density endothermic aviation fuel by converting polycycloalkane, provides higher reaction active site density and promotes diffusion of macromolecular cycloalkane.

A process for upgrading a naphtha feed includes separating the naphtha feed into at least a light naphtha fraction, contacting the light naphtha fraction with hydrogen in the presence of at least one cyclization catalyst, and contacting the cyclization effluent with at least one cracking catalyst. Contacting the light naphtha fraction with hydrogen in the presence of at least one cyclization catalyst may produce a cyclization effluent comprising a greater concentration of naphthenes compared to the light naphtha fraction. Contacting the cyclization effluent with at least one cracking catalyst under conditions sufficient crack at least a portion of the cyclization effluent may produce a fluid catalytic cracking effluent comprising light olefins, gasoline blending components, or both. A system for upgrading a naphtha feed includes a naphtha separation unit, a cyclization unit disposed downstream of the naphtha separation unit, and a fluid catalytic cracking unit disposed downstream of the cyclization unit.

The application provides a pre-leaching auxiliary solvent extraction method for oil sand or oil sludge containing heavy crude oil, and belongs to the technical field of product separation and solid waste treatment in the field of petroleum chemical industry. The bitumen is dispersed by using aromatic hydrocarbon first, and then extracted by using naphthenic hydrocarbon, so that good extraction effect can be achieved, a surfactant does not need to be added, the solid phase residual oil rate after treatment is less than 1wt%, and the national relevant standard is met; the pre-leaching agent and the extractant used in the application have low boiling points, are easy to distill and recover, and the recovery rate is greater than 85%. In addition, the method provided by the application has the operation temperature of room temperature (20-30 DEG C), the operation condition is mild, the method is simple, the energy consumption is low, the organic solvent and the crude oil (containing bitumen and other heavy components) can be recovered by distillation, and the resource utilization is realized.

The present disclosure relates to a method for separating naphtha, comprising: feeding naphtha and a first desorbent into a first adsorption separation tower for first adsorption separation to obtain a first extract and a first raffinate; feeding the first raffinate into a first rectifying tower for first rectification treatment to obtain a first stream mainly containing cycloalkanes and alkanes; feeding the first stream and a second desorbent into a second adsorption separation tower for second adsorption separation to obtain a second extract and a second raffinate; feeding the second raffinate into a second rectifying tower for second rectification treatment to obtain a second stream mainly containing alkanes; feeding the first extract and the second extract into a third rectifying tower for third rectification treatment to obtain a third stream mainly containing aromatic hydrocarbons and cycloalkanes; wherein the first desorbent is selected from heavy aromatic hydrocarbon components, and the second desorbent is selected from light hydrocarbon components. The method of the present disclosure has low cost, simple process, high separation purity and high yield.

The invention discloses application of a hierarchical pore nanoreactor catalyst in preparation of saturated cycloalkane, and belongs to the technical field of catalysts. The method comprises the following steps: uniformly dispersing ZIF-8 in a solvent, adding dopamine hydrochloride and amino acid, stirring at a certain temperature, and carrying out suction filtration and drying to obtain a dopamine-amino acid polymer modified ZIF-8 composite material; dispersing the composite material and a metal precursor in a solvent, uniformly stirring, and carrying out vacuum drying to remove the solvent; and carrying out segmented roasting in an inert atmosphere to obtain the required hierarchical pore nano-reactor catalyst. The catalyst is applied to preparation of saturated cycloalkanes by hydrogenation of polycyclic aromatic hydrocarbons, and specifically, a solvent, polycyclic aromatic hydrocarbons, the catalyst and hydrogen are mixed for a catalytic hydrogenation reaction. The hierarchical pore hollow structure of the catalyst can significantly promote diffusion and enrichment of polycyclic aromatic hydrocarbon molecules of different sizes, and rich pyridine nitrogen sites have strong adsorption and activation capabilities on polycyclic aromatic hydrocarbon and hydrogen molecules.

The application provides application of a hydrocarbon solvent in a full solid battery, a positive electrode sheet, a negative electrode sheet and a full solid battery. The full solid battery comprises a binder, the binder comprises a polyolefin binder and / or a styrene block binder, and the hydrocarbon solvent comprises paraffin and naphthene; the flash point of the hydrocarbon solvent is greater than or equal to 60 DEG C, and the distillation range of the hydrocarbon solvent is greater than or equal to 200 DEG C. The hydrocarbon solvent solves the problems of poor solubility and dispersibility of the polyolefin binder or the styrene block binder in the solvent, easy gelation, floating of the binder and reaction metamorphosis of sulfides in a processing process.

The invention is related to a process for synthesizing a sustainable aviation fuel composition. The process comprises providing a reaction mixture comprising a first compound that is at least one of mevalonolactone, mevalonic acid, mevalonate salt, dehydromevalonic acid, dehydromevalonate salt, dehydromevalonolactone or combinations thereof. The process then involves converting the first compound in the reaction mixture to provide a first intermediate comprising isoprene. Then, the isoprene in the first intermediate is reacted in the presence of a first heat transfer agent to provide a second intermediate comprising terpenes. Finally, the second intermediate is allowed to react in the presence of a second heat transfer agent, or alternatively in neat conditions, and optionally in presence of a catalyst to provide the sustainable fuel composition. The sustainable aviation fuel composition made available from the process of the invention is found to comprise monocyclic aromatic hydrocarbons (MAHs) at useful concentration ranges (along with cycloalkanes) while they are substantially devoid of Polycyclic aromatic hydrocarbons (PAHs).

The application discloses an esterase with stereoselectivity and application thereof, and the esterase is: a) an esterase comprising a sequence as shown in SEQ ID NO: 2 or a sequence as shown in SEQ ID NO: 2; or b) a mutant based on SEQ ID NO: 2 comprising one or more than two mutations, and the esterase is used as a catalyst in the application of asymmetric resolution preparation of chiral oxacycloalkane carboxylate, has good substrate tolerance, high optical purity (ee s The reaction condition is mild, the environment is friendly, the operation is simple, the industrial amplification is easy, and the esterase has a good industrial application development prospect.

The present invention relates to a method for producing unsubstituted or at least monosubstituted α,ω-dicarboxylic acids or ketocarboxylic acids and unsubstituted or at least monosubstituted cycloalkanones by electrochemically oxidizing unsubstituted or at least monosubstituted mono- or polyunsaturated cycloalkenes and unsubstituted or at least monosubstituted saturated alicyclic hydrocarbons in an electrolytic cell in the presence of inorganic or organic nitrates in a reaction medium in the presence of oxygen.

A liquid crystal composition capable of forming a liquid crystal cured layer with suppressed cissing during formation of a liquid crystal cured layer and excellent alignment properties, a liquid crystal cured layer, an optical film, a polarizing plate, and an image display device. The liquid crystal composition includes a liquid crystal compound and a surfactant, in which the surfactant is a copolymer having a repeating unit A including two or more silicon atom-containing groups each having three substituents and a repeating unit B including two or more ring structures consisting of a cycloalkane ring or a monocyclic aromatic ring in which at least one of the ring structures consists of a monocyclic aromatic ring.

The invention relates to fluorocarbon chain modified cobalt nickel-aluminum hydrotalcite and a preparation method and application thereof, ions in the cobalt nickel-aluminum hydrotalcite are Co < 2 + >, Ni < 2 + > and Al < 3 + > respectively, and a fluorocarbon chain is prepared from at least one compound in formulas (I)-(III); comprising the following steps: S1, stirring and mixing a Co < 2 + > aqueous solution, a Ni < 2 + > aqueous solution, an Al < 3 + > aqueous solution and a urea aqueous solution in an inert gas atmosphere, then carrying out a hydrothermal reaction, and after the reaction is finished, carrying out post-treatment to obtain cobalt nickel-aluminum hydrotalcite; and S2, dispersing the cobalt nickel-aluminum hydrotalcite in anhydrous toluene, reacting the cobalt nickel-aluminum hydrotalcite with at least one compound in formulas (I)-(III) under the action of triethylamine in an inert gas atmosphere, and after the reaction is finished, performing post-treatment to obtain fluorocarbon chain modified cobalt nickel-aluminum hydrotalcite, the hydrotalcite is applied to preparation of naphthenic alcohol and naphthenic ketone by catalyzing partial oxidation of naphthenic hydrocarbon. The method has the advantages of high selectivity, high product yield, low content of naphthenic hydroperoxide in the reaction process, and high operation safety.

The invention belongs to the technical field of aviation fuel, and particularly relates to a C11-C16 cycloalkane component as well as a preparation method, a preparation device and application thereof. The preparation method of the C11-C16 cycloalkane component provided by the invention comprises the following steps: carrying out a hydrodesulfurization and denitrification reaction on a coal tar light fraction and a hydrodesulfurization and denitrification catalyst in a hydrogen-containing atmosphere to obtain refined light oil; carrying out alkylation reaction on the refined light oil, naphtha and a hydrogen type molecular sieve catalyst to obtain an aryl mixture; carrying out hydrogenation reaction on the aryl mixture and a hydrogenation catalyst in a hydrogen-containing atmosphere to obtain a cycloalkane mixture; and the cycloalkane mixture is subjected to fractionation, such that the C11-C16 cycloalkane component is obtained. According to the preparation method provided by the invention, the coal tar light fraction and naphtha are taken as raw materials and can be directionally converted into C11-C16 cycloalkane components, so that the novel aviation fuel with high density and calorific value is prepared.

The invention first relates to a process for the dehydrogenation of a feedstock comprising cycloalkanes having 6 carbon rings to produce an effluent comprising hydrogen and aromatics, using a reaction section comprising at least one multi-tubular reactor comprising at least two tubes comprising a fixed bed of at least one dehydrogenation catalyst and a shell comprising at least one fixed bed of at least one dehydrogenation catalyst, -the feedstock is fed into the tube in gaseous form at an inlet temperature of the feedstock greater than or equal to 300 DEG C, at an inlet pressure of the feedstock between 0.1 and 1 MPa, and at a feedstock weight hourly space velocity (WWH) at an inlet between 1 and 15 h <-1 >,-a heat transfer fluid is circulated in the shell, the heat transfer fluid is introduced in gaseous form at the inlet of the shell, and-the heat transfer fluid is introduced in gaseous form at the inlet of the shell. The heat transfer fluid is introduced into the shell at an inlet temperature of between 320 DEG C and 400 DEG C and at an inlet pressure of between 0.10 MPa and 1.10 MPa at a flow rate such that the ratio of the weight flow rate of the heat transfer fluid at the inlet of the shell to the weight flow rate of the feedstock at the inlet of the tube is greater than or equal to 1.0.

The invention discloses a crystalline porous organic molecular framework material POM-OFPDT constructed by non-covalent pi accumulation as well as a preparation method and application of the crystalline porous organic molecular framework material POM-OFPDT. The crystalline porous organic molecular framework material POM-OFPDT constructed by non-covalent pi stacking provided by the invention has a capsule-shaped permanent one-dimensional pore channel in the a-axis direction, has good thermal stability, recyclability and high selectivity, and can effectively realize efficient separation of aromatic hydrocarbons / cycloalkanes.

The application relates to a rubber ring for sealing a pump truck piston and a preparation method thereof, and belongs to the technical field of rubber sealing rings. The rubber ring is divided into an inner ring and an outer ring, the outer ring wraps the inner ring, and the preparation raw materials of the outer ring include 62-75 parts of polyurethane particles, 5-10 parts of natural rubber, 2-5 parts of coumarone-indene resin, 7-9 parts of naphthenic oil and 4-12 parts of graphite; the preparation raw materials of the inner ring include 86-95 parts of polyurethane particles, 1-3 parts of tetrafluoroethylene powder and 5-10 parts of elastic microspheres. The rubber ring prepared by adopting the double-layer functional partition design of the outer ring wrapping the inner ring has good support and high-elasticity sealing performance. The inner ring adopts polyurethane+ tetrafluoroethylene powder+ elastic microspheres as a core support layer, relies on the high strength and high tear resistance of polyurethane itself; the outer ring adopts polyurethane+ natural rubber+ graphite-naphthenic oil paste+ coumarone-indene resin as a functional action layer, can be closely attached to a sealing surface and reduce gaps.

The invention provides a metal-heteropolyacid catalyst confined to a molecular sieve as well as a preparation method and hydrodeoxygenation application of the metal-heteropolyacid catalyst. The catalyst takes a spherical pure silicon molecular sieve with the particle size of 2-3mm as a carrier, and transition metal and heteropoly acid active components are supported in a pore channel in a limited range; the mass ratio of the heteropoly acid to the metal is (10-50): 1. According to the invention, an organic amine bridging strategy is adopted to construct near double active sites, that is, organic amine molecules in heteropolyacid organic amine salt are used as a guiding anchoring agent, and a transition metal precursor is accurately anchored near heteropolyacid. After roasting, a concerted catalysis center in which a metal hydrogenation site and a heteropolyacid deoxidation site are closely close on the nanoscale is successfully constructed in a confinement space of the molecular sieve, and the mass transfer efficiency and the step coupling effect in a hydrodeoxygenation multi-step cascade reaction are improved. When the weight hourly space velocity is 2 g / gcat. / h, the temperature is 150-250 DEG C and the pressure is 0.5-2 MPa, the conversion rate of the oxygen-enriched phenolic compound can be greater than or equal to 94%, and the yield of cycloalkane can be greater than or equal to 90%.

A process produces unsubstituted or at least singly substituted cycloalkanones by electrochemical oxidation of unsubstituted or at least singly substituted, saturated cycloaliphatic hydrocarbons in the presence of an inorganic or organic nitrate salt in an electrolysis cell in a reaction medium in the presence of oxygen.

The application provides a method for preparing low-chlorinated impurity isocyanate, and belongs to the technical field of isocyanate. The method is characterized in that two pretreatments are performed before isocyanate refining. On the one hand, naphthenes are used to extract the phosgenation reaction liquid, and insoluble substances such as urea and carbodiimide are removed before phosgene removal, thereby effectively reducing the generation of phosgene adducts. On the other hand, phosgene synthesis tail gas, phosgenation reaction tail gas and isocyanate refining tail gas are collected and mixed as stripping agents according to the target gas composition, and stripping treatment is performed in the phosgene removal stage. By controlling the source and gas composition of the stripping agent, phosgene can be quickly removed, the high-temperature polymerization of isocyanate and the generation of phosgene adducts can be inhibited, the generation of chlorinated isocyanate impurities can be reduced from the root, and the product quality is significantly improved.

Provided are biazacycloalkane compounds represented by formula I and formula II, pharmaceutically acceptable salts, hydrates, isomers, prodrugs or mixtures thereof, a pharmaceutical composition containing same, and the use thereof in the preparation of a drug for preventing, alleviating or treating related diseases caused by Menin-MLL protein interaction.

The invention provides an ilmenite collecting agent and a preparation method and application thereof, and relates to the technical field of mineral flotation separation. According to the preparation method, the ilmenite collecting agent can be efficiently and stably prepared by performing a hydroximation reaction on the cycloalkane carboxylic acid methyl ester compound and the free hydroxylamine solution and combining a preparation process of methanol separation treatment, acidification treatment and freeze-drying treatment; the preparation method is simple and easy to operate, large-scale production is easy, and great innovation is brought to large-scale obtaining of high-grade and high-recovery-rate concentrates through a flotation process of oxidized minerals. The molecular formula of the ilmenite collecting agent is Cn + 1H2n + 1O2N; or is Cn + 2H2n + 2O2N (n is an integer from 3 to 10). And the method can show remarkable advantages in ilmenite flotation. The high-temperature-resistant environment-friendly paint can keep excellent performance under the conditions of different pH values and temperatures, is high in adaptability and low in toxicity, and meets the environment-friendly requirements of green mines.

The invention belongs to the technical field of environmental management, and particularly relates to a method for degrading polyolefin waste into oil. The invention provides a method for degrading polyolefin wastes into oil, which comprises the following steps: mixing the polyolefin wastes and a catalyst, and carrying out ball milling to obtain a degradation product; the catalyst is inorganic compound particles; the degradation product comprises a gas phase and a liquid phase, the gas phase comprises short-chain alkane, the liquid phase is an oily compound, and the liquid phase comprises one or more of long-chain alkane, cycloalkane and aromatic compounds. Carbon-carbon bonds in molecular chains of polyolefin compounds can be efficiently attacked under the action of a catalyst through the mechanochemical action initiated by mechanical force of a ball mill, so that the breakage reaction of macromolecular chains is triggered, the polymer degradation efficiency is remarkably improved, and the polyolefin compounds are degraded into gas and liquid oil compounds; the liquid oil compound can be applied to the fields of industrial lubrication, energy supply, chemical raw materials, infrastructure construction and the like.

To provide new technical common sense for a method of producing metconazole that can achieve sufficient yield and cis-isomer ratio. [Solution] A method for producing metconazole crystals, comprising the steps of preparing a mixture containing a solvent containing cycloalkanes and metconazole, and cooling the mixture to crystallize metconazole.