278 results about "Cyclohexanol" patented technology

The invention relates to the technical field of chemical engineering, in particular to a method and a device for removing heavy components from cyclohexanol. Comprising the following steps: a, rectifying a cyclohexanol-containing material from a cyclohexene hydration reaction to obtain a first solution containing cyclohexanol and heavy components in a tower kettle; b, carrying out heavy component removal operation on the first solution to obtain a third solution containing a catalyst and heavy components, a first gas phase and a second gas phase; and c, rectifying the first gas phase and the second gas phase to obtain a fourth solution subjected to heavy component removal, namely cyclohexanol subjected to heavy component removal. The entrained catalyst and heavy components are removed together, and the fluidity required by the catalyst waste liquid is maintained by using the heavy components, so that the loss of cyclohexanol is reduced.

The present invention discloses a catalyst for dehydrogenating cyclohexanol to cyclohexanone, a preparation method thereof and an application thereof. The catalyst comprises a silica support and active components and active promoters uniformly loaded on the silica support; the active components include copper element, zinc element and magnesium element; the active promoter is selected from borate. The catalyst for dehydrogenating cyclohexanol to cyclohexanone disclosed by the present invention greatly enhances the interaction between the silica support and the active components, and significantly improves the long-term stability of the catalyst on the basis of ensuring that the catalyst has excellent catalytic activity and selectivity.

The invention relates to the technical field of chemical catalysis, in particular to a copper-silicon catalyzed cyclohexanol gradient dehydrogenation and hydrogen recycling method which comprises the following steps: step 1, preparing a gradient catalyst, namely carrying out surface hydroxyl regulation pretreatment on porous silica gel, and loading a copper salt solution by adopting a step-by-step impregnation method to form gradient distribution with gradually decreased copper loading capacity from outside to inside, carrying out segmented heating reduction in a reducing atmosphere containing 5vol% of H2 / N2; 2, gradient dehydrogenation reaction process control; and 3, hydrogen in-situ separation and cyclic utilization: separating hydrogen from the reaction outlet gas through a palladium alloy membrane, controlling the pressure difference of the two sides of the membrane to maintain the permeation flux, returning the separated hydrogen to the inlet of the reactor to adjust the hydrogen partial pressure, and storing the residual hydrogen. Through gradient catalyst preparation, accurate reaction process control and efficient hydrogen recovery technologies, the cyclohexanone production efficiency is improved, and long-term stability of the catalyst and efficient recycling of hydrogen are achieved.

The invention relates to low-temperature lead-free formic acid solder paste and a preparation method and application thereof, and belongs to the technical field of welding materials. The low-temperature lead-free formic acid solder paste is prepared from the following raw materials in percentage by mass: 85-90% of alloy welding powder and 10-15% of scaling powder, the soldering flux comprises the following raw materials in parts by weight: 10-15 parts of an activating agent, 1-5 parts of a rheological agent, 20-30 parts of an organic solvent, 20-30 parts of a paste forming agent, 3-5 parts of a surfactant and 0.1-0.5 part of a corrosion inhibitor, the activating agent is a composition of hydrogenated dimer acid, glycollic acid and ethylenediaminetetraacetic acid, and the organic solvent is a composition of tetrahydrofurfuryl alcohol and cyclohexanol. The paste forming agent is polyethylene glycol. The solder paste is suitable for a low-temperature welding process at the temperature of 120-150 DEG C, welding energy consumption can be reduced, the residual rate after welding is low, follow-up cleaning is not needed, the production environment can be improved, and the production cost can be reduced.

The invention discloses a heat-insulating silicone rubber foam material with high elasticity and a preparation method thereof, and relates to the technical field of heat-insulating materials. The invention discloses a heat-insulating silicone rubber foam material with high elasticity. The high-temperature-resistant silicone oil composition is prepared from the following raw materials in parts by weight: 40 to 60 parts of vinyl-terminated phenyl silicone oil, 10 to 30 parts of nano silicon dioxide, 40 to 80 parts of modified fly ash hollow microspheres, 2 to 10 parts of cerium dioxide, 1 to 5 parts of sodium bicarbonate, 3 to 8 parts of self-synthesized single-hydroxyl-terminated single-hydrogen-terminated silicone oil, 5 to 15 parts of self-synthesized perhydrosilicone oil, 4 to 10 parts of diphenyl silanediol and 0.1 to 0.3 part of 1-ethynyl cyclohexanol. 0.3 to 0.5 part of a platinum complex catalyst, 0.5 to 1 part of an antioxidant 1010 and 0.5 to 2 parts of a coupling agent KH-560. The silicone rubber foam material prepared by the invention adopts a two-stage foaming and gradient curing process, combines the modified fly ash hollow microspheres and other fillers, has the advantages of high elasticity, good heat insulation property, aging resistance and the like, is environment-friendly in raw materials and stable in process, and is suitable for buffering and heat insulation between battery cells in the fields of new energy automobiles and energy storage.

The invention relates to the technical field of organic silica gel adhesives, in particular to a two-component adhesive for bonding cured silica gel and uncured silica gel as well as a preparation method and application of the two-component adhesive. The adhesive is composed of an agent A and an agent B, wherein the agent A comprises base glue, vinyl silicone resin, low-viscosity vinyl silicone oil, a titanium catalyst, a platinum catalyst and a diluent; the agent B comprises base rubber, hydrogen-containing silicone oil, three silane coupling agents, a 2-ethynyl cyclohexanol inhibitor and two intermediates prepared through addition reaction. The agent A and the agent B are used after being mixed according to the mass ratio of 1: 1, can be bonded with unvulcanized silica gel and jointly vulcanized after being pre-cured for 2 hours at normal temperature or subjected to heat treatment for 30 minutes at 70 DEG C, and are high in peel strength, excellent in humidity and heat resistance and suitable for high-reliability silica gel compounding in the fields of electronics, medical treatment and the like.

The invention belongs to the technical field of chemical engineering, and relates to a method and a device for utilizing latent heat of a tower top gas phase in cyclohexanol preparation. Comprising a first separation tower, a second separation tower and the like, a tower top gas phase outlet of the second separation tower is connected with a hot side inlet of a second tower condenser, and a cold side outlet of the second tower condenser is connected with the first separation tower; a tower top gas phase outlet of the cyclohexene recovery tower is connected with the first separation tower; a tower top gas phase outlet of the cyclohexanol refining tower is connected with a hot side inlet of a refining tower condenser, and a cold side outlet of the refining tower condenser is connected with the second separation tower through a pipeline; an outlet of the hydration reaction system is connected with the first separation tower, and a tower kettle liquid phase outlet of the first separation tower is connected with an inlet of the second separation tower through a pipeline; a side line outlet of the first separation tower is connected with the hydration reaction system. The tower top gas phase latent heat of the second separation tower, the cyclohexene recovery tower and the cyclohexanol refining tower is recycled, so that the energy consumption in the cyclohexanol production process is reduced.

The invention relates to the technical field of special cables, and discloses a high and low temperature resistant composite insulating layer cable and a preparation method thereof.The cable comprises a conductor core and a composite insulating layer wrapping the conductor core, and the composite insulating layer comprises a high temperature resistant heat conduction core layer and a low temperature resistant elastic layer; the high-temperature-resistant heat-conducting core layer is prepared from the following raw material: polyamide acid; hexagonal boron nitride; alpha-phase silicon carbide; the preparation method comprises the following steps: adding gamma-amino propyl triethoxy silane; nano barium titanate; the low-temperature-resistant elastic layer is prepared from the following raw materials: vinyl terminated polydimethylsiloxane; performing hydrophobic treatment on fumed silica; a Karstedt catalyst; a hydrogen-containing silicone oil crosslinking agent; the average particle size D50 of the 1-ethynyl-1-cyclohexanol and the alpha-phase silicon carbide is 0.5 to 2 mu m. According to the invention, by adopting a microwave selective heating and interlayer heat conduction mechanism, efficient and high-quality integrated curing of the composite insulating layer is realized.

The invention discloses a catalyst for preparing cyclohexanone by cyclohexanol dehydrogenation coupled phenol hydrogenation, the catalyst has a composite metal hydrotalcite structure, the metal components comprise ruthenium, magnesium and aluminum, the metal components are uniformly dispersed in hydrotalcite, and the ruthenium, the magnesium and the aluminum respectively account for 1-5wt%, 10-30wt% and 1-10wt% of the total mass of the catalyst. The acid-base property, the specific surface area and the pore structure of the catalyst are optimized by adjusting the ratio of magnesium to aluminum, so that the dispersion of ruthenium is improved, the interaction between ruthenium and a hydrotalcite carrier is increased, and the synergistic effect of all the element components enables active centers in cyclohexanol dehydrogenation, hydrogen transfer and phenol hydrogenation processes to be efficiently combined together, so that the catalytic activity of the catalyst is improved. Rich alkaline sites are generated in the catalyst, the dehydration side reaction of cyclohexanol can be effectively inhibited, meanwhile, the selectivity of cyclohexanone prepared through phenol hydrogenation is improved, it is ensured that the phenol hydrogenation reaction and the cyclohexanol dehydrogenation reaction can be effectively coupled, and cyclohexanone is efficiently prepared.

The invention relates to the technical field of cyclohexene hydration and catalysts, and discloses a modified ZSM-5 molecular sieve and application thereof in cyclohexanol preparation through cyclohexene hydration. The modified ZSM-5 molecular sieve comprises a ZSM-5 molecular sieve inner core, the inner core is subjected to sulfonation treatment after broaching, and then the surface of the inner core is coated with SiO2 to form a core-shell structure; and carrying out hydrophobic modification on the ZrO2-SiO2 coated SO3H-ZSM-5 molecular sieve, and depositing a zirconium oxide layer on the surface of the ZrO2-SiO2 coated SO3H-ZSM-5 molecular sieve to obtain the ZrO2-SiO2 coated The molecular sieve is used as a catalyst in a cyclohexene hydration reaction, the conversion rate reaches 25% or above, the selectivity reaches 99.5% or above, the activity is still stable after the molecular sieve is recycled 6 times, the catalyst is excellent in catalytic performance, a new thought is provided for a current two-phase catalytic reaction, and meanwhile the molecular sieve is expected to be applied to a cyclohexene hydration industrial device.

The invention relates to the technical field of cosmetics, in particular to a sensitive skin care composition for soothing nerves and a preparation method thereof. According to the sensitive skin care composition capable of soothing the nerves, provided by the invention, the acetyl zingerone clathrate compound, the strawberry fruit extract and the 4-tert-butyl cyclohexanol are compounded, and through the dual-channel synergistic effect of transient inhibition of neural signals and long-acting repair of a cell microenvironment, the synergy of immediate soothing and long-term barrier repair is realized; the vicious circle of sensitive skin is effectively blocked.

The invention provides a high-performance organosilicon sealant for electronic packaging, and relates to the technical field of organosilicon sealants. The organic silicon sealant is prepared from the following raw materials: methyl vinyl silicone oil, vinyl dimethyl silane, a platinum catalyst, fumed silica, a B4Cw (at) ZrO2 compound, ethynyl cyclohexanol, a silane coupling agent, a titanate coupling agent, a cerium-zinc composite antioxidant and an auxiliary antioxidant. The B4Cw (at) ZrO2 compound is prepared from boron carbide whiskers and nano zirconium oxide sol; the cerium-zinc composite antioxidant is prepared from cerium nitrate, zinc nitrate and ammonia water. The preparation method of the high-performance organic silicon sealant for electronic packaging comprises the following steps: pretreating boron carbide whiskers, synthesizing a B4Cw-coated ZrO2 compound, preparing a cerium-zinc composite antioxidant, preparing a basic rubber material, and preparing the organic silicon sealant. The prepared organic silicon sealant is high in mechanical strength, excellent in elastic property and high in durability.

The invention relates to the technical field of daily chemical and skin external preparations, in particular to a six-dimensional synergistic effect-based acne removal and repair composition, which is prepared from the following active ingredients in parts by weight: 1 to 10 parts of sturgeon caviar extract, 0.1 to 10 parts of chlorogenic acid, 0.1 to 20 parts of 4-tert-butyl cyclohexanol and 0.1 to 20 parts of willow extract. The sturgeon caviar extract is prepared by supercritical CO2 fluid extraction, the willow extract is treated by a synthase process, the content of salicin is not less than 1.5 wt%, and at least one active component in the composition is subjected to supramolecular inclusion modification; the preparation method comprises the following steps: sequentially preparing the extracts and components, sequentially mixing, and finally carrying out an inclusion reaction. The composition constructs a full-link acne removal and skin health maintenance system through a six-dimensional synergistic effect of bacteriostasis, oil control, anti-inflammation, allergy relief, cutin dredging and repairing, has the characteristics of efficient acne removal, mildness, safety and low recurrence rate, is suitable for various skin types such as sensitive acne skin, and can be widely applied to acne removal products of various dosage forms.

The invention belongs to the technical field of cosmetics, and relates to a multichannel multi-target accurate delivery anti-allergy soothing nano-composite and a preparation method and application thereof, glycyrrhizic acid, bisabolol, 4-tert-butyl cyclohexanol and hydroxyphenyl propionamide benzoic acid are selected as anti-allergy soothing functional components. Comprising the following raw materials in percentage by mass: 0.1-5wt% of glycyrrhetinic acid; 0.1 to 10 weight percent of bisabolol; 0.001 wt% to 1 wt% of 4-tert-butyl cyclohexanol; 0.01 to 1 wt% of hydroxyphenyl propionamide benzoic acid; 10 to 50 wt% of an emulsifier; 1 to 20 wt% of a liquid lipid; 1 to 10 wt% of a co-emulsifier; 10 to 30 wt% of a polyol; and the balance of water. The sum of the mass percentages of the components is 100%. According to different passages of different active ingredients, the four active ingredients are simultaneously loaded in the same composition, so that multi-passage and multi-target accurate delivery can be realized, the skin can be timely and efficiently relieved from the source, the uncomfortable symptoms of the skin can be solved, and the immunity of the skin can be improved.

The present invention relates to the technical field of thermally conductive silicone rubber, and in particular to a thermally conductive silicone rubber and a preparation method thereof. The present invention proposes a thermally conductive silicone rubber and a preparation method thereof. A thermally conductive silicone rubber, the raw materials of the silicone rubber include: vinyl-terminated polydimethylsiloxane, vinyl MQ resin, hydrogen-containing silicone oil, ethynyl cyclohexanol, and modified silver powder; the modified silver powder is a mixture containing silicone resin and silver powder. In the thermally conductive silicone rubber provided by the present invention, by using silicone resin-coated silver powder, the thermally conductive silicone rubber of the present invention has suitable fluidity and high thermal conductivity before curing, which can meet the market demand for the use of ultra-high thermal conductivity silicone rubber. The thermally conductive silicone rubber provided by the present invention can be applied to structural heat dissipation components such as ultra-high power light-emitting chips.

The present application relates to a kind of sensitive skin care composition with soothing, repair effect and its application, it is composed of 4-tert-butyl cyclohexanol, schisandra chinensis extract and grey hair bean seed extract, the mass ratio of 4-tert-butyl cyclohexanol, schisandra chinensis extract and grey hair bean seed extract is 1:(0.01-0.1):(0.01-0.1);Wherein, schisandra chinensis extract and grey hair bean seed extract are obtained using enzymatic hydrolysis-fermentation process, the composition of the present application has good soothing repair effect, and the active ingredient combination shows good compatibility and stability in formula system, without additional solubilizer and emulsifier, adapt more mild dosage form, more fit the needs of moderate sensitive skin.

The invention belongs to the technical field of cyclohexanol production, and particularly relates to a system and a method for improving the conversion rate of cyclohexanol prepared by cyclohexene hydration. The system for improving the conversion rate of cyclohexanol prepared by cyclohexene hydration comprises an alcohol tower I, a first hydration reactor and a second hydration reactor, a cyclohexene inlet and a side line extraction opening are respectively formed in the side wall of the alcohol tower I; the side line extraction port is communicated with an inlet of a first hydration reactor through a side line pipeline, a micro-interface reactor is arranged on the side line pipeline, a catalyst outlet is formed in the bottom of the first hydration reactor, and the catalyst outlet is communicated with a micro-interface mixing device through a catalyst pipeline; the first hydration reactor is communicated with the second hydration reactor through an overflow pipeline. According to the system and the method, on the premise of not changing the existing process operation, the reaction conversion rate of cyclohexanol prepared by a cyclohexene hydration method is improved, the process operation conditions are optimized, the energy consumption is reduced, and the purpose of improving the productivity is achieved.

The invention relates to the technical field of X oil recovery, and discloses a method for preparing cyclohexanol from a byproduct X oil in a cyclohexanone production process by a hydration method. The method comprises the following steps: (1) in the presence of hydrogen, introducing mixed reaction oil containing X oil and an organic solvent into a fixed bed reactor filled with a hydrogenation catalyst, and carrying out hydrotreatment to obtain a hydrotreatment effluent; (2) introducing the hydrotreating effluent into a desolventizing tower for first separation to obtain hydrogenated X oil and an organic solvent which can be recycled to the step (1); and (3) introducing the hydrogenated X oil into a cyclohexanol recovery tower for secondary separation to obtain gas-phase cyclohexanol and heavy X oil. According to the method provided by the invention, phenol in the X oil can be hydrogenated into cyclohexanol, efficient separation is carried out, effective utilization of phenol in the X oil is realized, and material loss in the production process is reduced.

The invention discloses a (Fe (OH) 2) ((OH) 0.25 (H2O) 0.5) / W18O49 composite material as well as a preparation method and application thereof, and belongs to the technical field of functional materials. The preparation method comprises the following steps: uniformly mixing and stirring cyclohexanol, acetylacetone and absolute ethyl alcohol, adding tungsten hexachloride, uniformly stirring at room temperature, then adding ferric trichloride, uniformly stirring at room temperature, carrying out hydrothermal reaction, washing and drying to obtain the (Fe (OH) 2) ((OH) 0.25 (H2O) 0.5) / W18O49 composite material. A mixed system of cyclohexanol, acetylacetone and absolute ethyl alcohol is utilized to synergistically solve the problems of advanced hydrolysis and agglomeration of metal ions; the oxygen vacancy of the W18O49 accelerates the conversion of the sodium polysulfide, and the Fe (OH) 2 derivative strengthens the chemical anchoring of the sodium polysulfide, thereby realizing the synergy of the anchoring and rapid conversion of the NaPSs. When being used as a sodium-sulfur battery positive electrode material catalyst, the catalyst shows excellent catalytic performance and rate capability, and still has the capacity of 420 mAh g <-1 > after circulating for 25000 circles under the large current density of 10 A g <-1 >. The strong adsorption characteristic of the hydroxylated iron-based component and the high catalytic activity of W18O49 are utilized to form a synergistic effect, and a new scheme is provided for breaking through the technical bottleneck of an RT Na-S battery.

This invention relates to the field of potting compound technology, and more particularly to a thermally conductive potting compound, its preparation method, and its application method. The invention provides a thermally conductive potting compound comprising component A and component B; component A, by weight, comprises: 24-28 parts of thermally conductive base adhesive; 0.7-1.0 parts of vinyl silicone oil; 0.05-0.15 parts of platinum catalyst; and 0.04-0.12 parts of colorant; component B, by weight, comprises: 24-28 parts of thermally conductive base adhesive; 0-0.4 parts of vinyl silicone oil; 0.8-0.9 parts of hydrogen-containing silicone oil; and 0.005-0.015 parts of inhibitor; the inhibitor includes ethynylcyclohexanol and / or methylbutynol. The thermally conductive potting compound provided by this invention has ultra-high thermal conductivity, low volatility and low viscosity, excellent mechanical properties, excellent electrical insulation properties, and superior storage stability, exhibiting no clumping or agglomeration after 6 months of storage.

The invention relates to a preparation method of a trace Fe optimized Ru nano-catalyst and application of the trace Fe optimized Ru nano-catalyst in hydrodechlorination reaction of parachlorophenol. The preparation method comprises the following specific steps: firstly, dissolving ruthenium chloride hydrate and ferric trichloride into ethylene glycol, adding PVP (Polyvinyl Pyrrolidone) into the solution, fully mixing, adjusting the pH value of the solution to 3-4, transferring into a glass bottle, and heating and reacting in an oil bath pan at 180 DEG C; and centrifuging, washing and drying the obtained product to obtain a black powdery solid, namely the Ru-Fe nano-catalyst. The hydrodechlorination process is carried out in a double-chamber electrolytic tank separated by a Nafion 117 membrane, an electrolyte is a Na2SO4 solution, a Ru-Fe electrode taking carbon cloth as a carrier is used as a working electrode, a Pt sheet is used as a counter electrode, and an Ag / AgCl electrode is used as a reference electrode. The Ru-Fe nano-catalyst provided by the invention has the advantages of stable structure, uniform metal distribution and excellent electron synergistic effect, and can efficiently catalyze hydrodechlorination of p-chlorophenol and generate cyclohexanol. The preparation process is simple, convenient and environment-friendly, has a good industrial application prospect, and is particularly suitable for green treatment and resource conversion of chlorine-containing organic wastewater.

The utility model discloses a cyclohexanol refining tower top and middle heat recovery energy-saving system, which comprises a cyclohexanol refining tower, a heat recovery device, a cyclohexanol product discharge condenser, a cyclohexane refining tower and the like, a cyclohexanol outlet is arranged in the middle of the cyclohexanol refining tower, the cyclohexanol outlet is connected with a shell pass inlet of the heat recovery device through a pipeline, and the cyclohexanol outlet is connected with a shell pass outlet of the heat recovery device through a pipeline. A shell pass outlet of the heat recovery device is connected with an inlet of a cyclohexanol product discharging condenser through a pipeline, a cyclohexane refining tower 1 # reboiler and a cyclohexane refining tower 2 # reboiler which supply heat to the bottom of the cyclohexane refining tower through a tube pass are arranged at the bottom of the cyclohexane refining tower, and a tube pass inlet of the heat recovery device is connected with a high-purity water pipeline. According to the thermal coupling energy-saving and consumption-reducing device for the cyclohexane refining tower, the thermal coupling energy-saving and consumption-reducing technology is adopted, so that the use amount of circulating water is reduced, the use amount of steam is effectively saved, the production cost can be greatly reduced, and the production efficiency is greatly improved.

Provided is an aggregate amount regulator having an excellent aggregate production promoting effect. Use of a compound selected from the group consisting of 4-ethyl-alpha, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta The compound is at least one compound selected from the group consisting of alpha, alpha-dimethyl benzene propionaldehyde, 1-(2-tert-butylcyclohexyloxy)-2-butanol, benzyl benzoate, tricyclodecenyl acetate, trichloromethyl phenyl methyl acetate, geraniol, cyclohexylidene (phenyl) acetonitrile, 1-menthol, linacol, dihydromyrcenol, benzyl salicylate, 4-(5, 5, 6-trimethylbicyclo [2.2. 1] heptane-2-yl) cyclohexanol, and the like.

The invention belongs to the technical field of cosmetics, and particularly relates to a cell energy activation composition with an anti-aging effect and a preparation method thereof, the cell energy activation composition with the anti-aging effect and the preparation method thereof are characterized in that the cell energy activation composition with the anti-aging effect comprises the following components: 3-10 parts of thiotaurine and 0.01-0.5 part of a metal ion compound, the composition is prepared from the following raw materials in parts by weight: 0.05-0.5 part of an antioxidant, 0.005-0.05 part of redox regulatory protein, 0.1-6 parts of a raw grass-containing extract, 0.01-1 part of 4-tert-butyl cyclohexanol and 0.05-3 parts of a lipidosome delivery system, according to the invention, multi-channel energy activation is carried out: thiotaurine participates in energy metabolism, metal ions promote enzyme activity, thioredoxin maintains redox balance, and mitochondrial functions are comprehensively improved; liposomal delivery enhances absorption: the transdermal ability of active matters is improved, the stability is enhanced, and the utilization rate is increased; multiple anti-aging mechanisms are as follows: oxidation resistance, saccharification resistance and cell repair.

The invention relates to the technical field of cosmetics, in particular to a moisturizing mask with a repairing effect and a preparation method of the moisturizing mask, and mask liquid comprises a sensitive skin repairing composition, an auxiliary effect system, a thickening system, a moisturizing system, a grease system, a buffer system and purified water. The sensitive skin repairing composition is prepared from chamomile oil, tea tree oil, a radix gentianae extract, a herba centellae extract, 4-tert-butyl cyclohexanol, butanediol, phosphatidyl ethanolamine and cardiolipin, phosphatidyl ethanolamine is modified, and the weight ratio of all the components is adjusted, so that the sensitive skin repairing composition is prepared. The traditional Chinese medicine composition has the advantages that various components in the composition are coordinated to play the optimal anti-inflammatory, anti-allergy, analgesic and repairing functions, exogenous stimulation, nerve stress response and inflammatory response are reduced, the self-protection mechanism is strengthened, the skin barrier is repaired, the oxidative stress capability is further strengthened, and the composition has more excellent high-temperature and low-temperature stability; the traditional Chinese medicine composition is natural and safe, and does not generate side effects such as dependence and drug resistance after long-term use.

Retinol-based composition. The present invention relates to a composition, particularly a cosmetic one, especially for makeup and / or the treatment of keratinous materials, comprising at least one retinoid, in particular retinol; bisabolol; 4-t-butylcyclohexanol; niacinamide; and D-panthenol. Figure for the abstract: None

The application relates to a CuO-ZnO-ZrO2@CeO2 core-shell catalyst and a preparation method and application thereof in preparing methanol. The preparation method is as follows: copper nitrate and zinc nitrate are dissolved in deionized water to form a mixed solution, a precipitant is added, and hydrothermal reaction is carried out to obtain copper-zinc nanoscale dispersed particles; then the particles are dispersed in deionized water, a zirconium nitrate aqueous solution is added, and hydrothermal reaction is carried out to precipitate zirconium on the outer layer of the particles; then a cerium nitrate aqueous solution and a precipitant are added to the system, and hydrothermal reaction is carried out; after the reaction, the system is subjected to filtration, washing, drying, grinding and calcination to obtain the CuO-ZnO-ZrO2@CeO2 core-shell catalyst. In the application process, CO2 and H2 are used as raw materials, cyclohexanol is used as a solvent, hydrogenation reaction is carried out under the action of the core-shell catalyst at 190-210 DEG C, and methanol is prepared. The core-shell catalyst can be applied to hydrogen transfer hydrogenation for preparing methanol, and can exhibit excellent catalytic activity and stability and higher methanol selectivity.

The invention belongs to the technical field of organic silicon pouring sealants, and particularly relates to an aluminum hydroxide-containing two-component organic silicon pouring sealant and a preparation method thereof. The two-component organic silicon pouring sealant containing aluminum hydroxide is composed of a component A and a component B, the component A is prepared from the following components in parts by weight: 35 to 45 parts of vinyl silicone oil, 50 to 60 parts of double-layer coated modified aluminum hydroxide, 4 to 6 parts of flame-retardant synergist and 0.03 to 0.09 part of 1-ethynyl-1-cyclohexanol; the component B is prepared from the following components in parts by weight: 20 to 30 parts of hydrogen-containing silicone oil and 0.08 to 0.16 part of platinum catalyst. According to the organic silicon pouring sealant, the low viscosity of the material is maintained, and meanwhile, the good flame retardant property and mechanical property are guaranteed.

This invention discloses a low-to-medium temperature cyclohexanol dehydrogenation catalyst for cyclohexanone and its preparation method. The catalyst uses organomontmorillonite as a support, and copper species are loaded onto the support using an impregnation method. The copper ion content is 1%–20% by mass of the catalyst, and 0.1%–2% of an additive is added. After washing, drying, and calcination, the organomontmorillonite-supported copper catalyst is obtained. The catalyst prepared by this invention has high specific surface area, high activity, and stability. Under relatively low reaction conditions and with low copper content, the catalyst still exhibits good cyclohexanol conversion and cyclohexanone selectivity. Furthermore, due to the low reaction temperature, the aggregation of the active components of the catalyst is not significant, resulting in good stability.

A composition for carbon dioxide (CO2) capture includes 2-aminocyclohexanol, cis-1,2-diaminocyclohexane, meglumine, or combinations thereof. A process of CO2 capture includes mixing a CO2-containing gas with the composition. A system includes a component for receiving a gas and the composition, which absorbs CO2 from the gas. A further composition includes a first amine solvent selected from 2-aminocyclohexanol, cis-1,2-diaminocyclohexane, and meglumine and a second amine solvent independently selected from 2-aminocyclohexanol, cis-1,2-diaminocyclohexane, meglumine, ethyl diethanolamine, dimethylethanolamine, piperidine, 2-amino-2-methyl-1-propanol, and monoethanolamine. A further process includes reacting CO2 with an amine selected from 2-aminocyclohexanol, cis-1,2-diaminocyclohexane, and meglumine.