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107results about How to "Low content of active ingredients" patented technology

Cerium basis composite oxides doped precious metal integer catalyzer and method of manufacturing the same

The invention is a ceric pyridyl compound oxide mixing with precious metal whole catalyst used for organic waste gas catalyzing burning purifying process and the preparation method, which aims to the defects of existing Pt / Ce0.68Zr0.32O2 whole catalyst preparation method with complicate preparation technique and chap on coating under high temperature, to provide a ceric pyridyl compound oxide mixing with precious metal whole catalyst with high catalyzing activity, heat stability and integration intensity and the preparation method. The catalyst comprises honeycomb ceramics carrier, addition agent and active component, wherein, the honeycomb ceramics carrier is cordierite honeycomb ceramics, the addition agent is ceric pyridyl compound oxide with the chemical formula CexM1-xO Delta, the active component is one or two of precious metal Pd and Pt. The preparation method comprises preparing soakage solution and the coating of the soakage solution on the honeycomb ceramics carrier two procedures.
Owner:ZHEJIANG NORMAL UNIVERSITY

Catalytic chemical coolant for hot aerosol and preparation method thereof

The invention relates to a catalytic coolant used in a hot aerosol fire extinguishing device and a processing technique of the catalytic coolant. As to the coolant, heat absorption cooling components mainly include manganese carbonate or manganese oxalate, manganese phosphate, potassium manganate, metal carbonate of a family I, a family II and a transition family, basic carbonate, oxalate and the like; a metal oxide or a hydroxide are adopted as a catalyst, an oxidant and a reinforcing filling; stearate, graphite and the like are adopted as a processing aid; composite solution of alkalis silicate and a water soluble polymer is adopted as an adhesive; and film materials such as hydroxymethyl or hydroxyethyl cellulose are adopted as a surface coating agent. The processing technique includes the steps of mould pressing, squeezing, pelletizing, coating and forming. Compared with the prior art, the catalytic coolant not only has high intensity and good cooling effect, but also can reduce secondary damage of an extinguishing agent and eliminate the content of poisonous gases in an extinguishing agent product so as to improve the environmental safety of the extinguishing agent.
Owner:SHAANXI J&R FIRE FIGHTING CO LTD

Method for preparing isopentenol from 3-methyl-3-butenol

The invention relates to a method for preparing isopentenol from 3-methyl-3-butenol, which performs isomerization reaction on a raw material of 3-methyl-3-butenol to generate the isopentenol in the presence of a catalyst in an atmosphere containing hydrogen, wherein the reaction pressure is normal pressure, the reaction temperature is between 50 and 90 DEG C, the reaction time is between 25 and 40 minutes, the catalyst uses Al2O3 as a carrier, a load active component is metal Pd, the content of the Pd in the catalyst in percentage by weight is between 0.1 and 2.0 percent, the particle size of the catalyst is between 80 and 200 meshes, and the weight ratio of the raw material to the catalyst is 30-100:1. Compared with the prior art, the method has obvious improvement, the catalyst is simpler, and the content of the active component is lower, thus the preparation is easier and the cost is lower; the reaction condition is mild; and on the premise of ensuring the selectivity and the product yield of a perfect product, the reaction time is greatly shortened. The reduction of the preparation cost of the catalyst and shortening of the reaction time finally reduce the overall production cost greatly.
Owner:SINOPEC SHANGHAI PETROCHEMICAL CO LTD

Honeysuckle green tea and production method thereof

ActiveCN104222399AAvoid destructionOvercome the problems of dull color and poor product qualityTea extractionMicrowaveBud
The invention relates to a honeysuckle green tea and a production method thereof. The method comprises picking honeysuckle buds of the three-green period, radiating the buds through a film with infrared rays of the rate of power of 5kW for 20-30 seconds and then water-removing the buds through microwaves for 2 minutes at a temperature of 80-90 DEG C, and during the microwave water-removing process, adjusting the moisture removal according to the color and the water content of the water-removed buds; timely blowing and cooling the water-removed buds for 20-30 minutes; rolling the buds for 8-10 minutes in a gentle and short-time mode; drying the buds through microwaves for 2-3 minutes at a temperature of 80-85 DEG C; flavoring the buds for 30-60 minutes to obtain the honeysuckle green tea. The honeysuckle green tea comprehensively improves the appearance and the color as well as internal qualities such as fragrance and taste of honeysuckle substituting tea and accordingly is a novel honeysuckle green tea product integrating high quality, health care and ornamental value.
Owner:SHANDONG AGRICULTURAL UNIVERSITY

Catalyst for preparing succinic anhydride from maleic anhydride through low-temperature hydrogenation and preparation method and application of catalyst

The invention discloses a catalyst for preparing succinic anhydride from maleic anhydride through low-temperature hydrogenation and a preparation method and an application of the catalyst. The catalyst is a supported palladium catalyst having 0.25-1 wt% of palladium. The method comprises: loading an active palladium salt solvent on a pre-treated carrier through an impregnation process, performing drying, and reducing the obtained product with hydrogen to obtain a palladium catalyst. The catalyst is subjected to fine control and effective combination of carrier pretreatment, impregnation, and reduction, so that active palladium ingredients can be effectively dispersed on the support. The catalyst can be applied to the preparation of succinic anhydride from maleic anhydride through low-temperature liquid-phase hydrogenation. Under the pressure no more than 1 MPa and at the reaction temperature of 25-100 DEG C, the conversion rate of maleic anhydride can reach 100%, and the selectivity of succinic anhydride is no less than 99%. The catalyst is low in noble metal content and has advantages in cost, is high in activity of succinic anhydride production and good in selectivity, and has advantages of low temperature and pressure and wide solvent selection range. Low-temperature large-scale production can be achieved.
Owner:GUANGDONG UNIV OF TECH

Enteric microcapsule of garlic essential oil and production method thereof

The invention provides an enteric microcapsule of garlic essential oil and a production method thereof, in particular to an enteric coating microcapsule of the garlic essential oil for animal green culture and the production method thereof. The production method comprises the steps: pelletizing the garlic essential oil, sorbent of white carbon black and corn flour by a wetting pelletizing method;polishing to be round; drying by a fluidizing bed and coating by crylic acid resin to generate the enteric coating microcapsule. The method can enhance the content of the garlic essential oil of the enteric microcapsule of the garlic essential oil to 30% to 50%, enhance the enteric release rate to more than 90% and basically cover the bad smell of the garlic essential oil. The made enteric microcapsule of the garlic essential oil can enhance animal food gathering quantity by 5% to 7% and reduce morbidity by 10% to 15%.
Owner:湖南现代资源生物科技有限公司

Improved preparation of Juhong pill, its preparation method and quality inspection method

The invention relates to a reddish orange capsule prepared from the following steps: (1) proportioning 15 kinds of medicinal materials, disintegrating dried orange peel into mesh fines, sieving, extracting the available compositions with dissolvent, making thick grease from the extract, (2) charging dried orange peel into the thick grease, mixing homogenously, drying into dried grease, and disintegrating the dried grease into mesh fines, (3) charging auxiliary materials and mixing homogeneously to obtain particles, (4) making capsules from the particles.
Owner:SICHUAN MEDCO PHARML

Disinfectant, preparation method and applications thereof

The present invention provides a disinfectant, which comprises hydrogen peroxide and a silver nitrate colloid, wherein the hydrogen peroxide content is 30-50 wt%, and the silver nitrate content is 0.01-0.1 wt%. According to the present invention, the disinfectant overcomes the defects of the single component, improves the disinfection effect and the solution stability, has strong sterilization capability, and rapidly acts; and the effective components and the pH value of the obtained are stable, silver ions cannot be precipitated after the long-time standing, and the stability test data and the disinfection effect data are stable. The invention further provides a preparation method of the disinfectant.
Owner:LUOYANG HUIZHONG ANIMAL MEDICINE

Carbon nanotube supported catalyst and preparation method thereof as well as application of carbon nanotube supported catalyst in low-temperature catalytic oxidation of CO

The invention provides a carbon nanotube supported catalyst and a preparation method thereof as well as application of the carbon nanotube supported catalyst in low-temperature catalytic oxidation ofCO. The method comprises the following steps: mixing carbon nanotubes with impregnation liquid containing copper salt and manganese salt to obtain a mixture; drying the mixture and then roasting the mixture to obtain the carbon nanotube supported catalyst. The catalyst takes the carbon nanotubes as a carrier, and takes copper manganese complex oxide as an active ingredient supported on the carrier. The experimental results show that the catalyst prepared by the embodiment of the invention keeps relatively-high catalytic activity and stability for 0.1 to 0.5 percent of CO under the condition that the low temperature is 0 to 22 DEG C, is suitable for eliminating CO by low-temperature catalysis in a typical enclosed space and also can be used for a toxin filtering agent material of respiratory protective equipment for emergency rescue in the enclosed space. Besides, the preparation method of the carbon nanotube supported catalyst, provided by the invention, is simple; active ingredients are low in content, and the cost is relatively low.
Owner:UNIV OF SCI & TECH OF CHINA

Pawpaw distilled liquor and preparation method thereof

The invention discloses a pawpaw distilled liquor and a preparation method thereof, belonging to the technical field of food processing and biological fermentation. The preparation method comprises the steps of: biologically fermenting papaya juice so as to transform carbohydrate into ethyl alcohol fully; and then preparing the pawpaw distilled liquor through twice distillation, storage, aging, mixing and filtration, wherein the distillation can improve an alcohol content, reduce contents of organic acids and polyphenols, and guarantee a relatively long expiration date and good mouth feeling of a finished liquor; and the contents of effective components in the finished liquor can be improved by mixing and adding a fermentation wine base into the distilled liquor. According to the invention, the pawpaw distilled liquor has the total content of the acids of 1-3 g / L, the total polyphenol content of 0.5-1.5 g / L and the alcoholic strength of 42-52%vol, is clear, transparent and full-bodied, rich in nutrition, fine and smooth as well as pure and mild in taste, has a full-bodied pawpaw smell, a soft taste and a refreshing feeling, and can be preserved for a long term at a normal temperature.
Owner:许臣中

Method for seed selection of excellent honeysuckle flower Lonicera japonica Thunb II variety

The invention relates to a method for seed selection of an excellent honeysuckle flower Lonicera japonica Thunb II variety and is suitable for seed selection of a novel honeysuckle flower variety. The method comprises the following steps of collecting branches of a large chicken feet-type farm-variety plant in the main honeysuckle flower producing area in the Pingyi county of the Shandong province, carrying out irradiation mutagenesis by 15 to 25Gy of <60>Co-gamma rays, carrying out cottage and transplant, carrying out single-plant seed selection of variant individuals, carrying out cottage and transplant to obtain a plant system, and carrying out variety comparison and production test. The novel Lonicera japonica Thunb II plant has a short, thick and straight limb, a large amount of branches, long circle-shaped leaves, sparse and short pubescence at leaf veins and leaf edges, internode length of 2.5 to 7cm, average flower bud length of 4.16cm, a large amount of flowers, a long bud period, compact pier piles, concentrated buds, chicken feet-shaped flowers and an early flowering phase, can be picked easily, and is suitable for close planting. Compared with the original large chicken feet-type farm-variety, the honeysuckle flower Lonicera japonica Thunb II obtained by the method has a honeysuckle flower medicinal material yield improved by 20.2%, chlorogenic acid content improved by 17.95% and galuteolin content improved by 15.20%.
Owner:张龙霏 +2

Preparation method for chitin-rich compound fertilizer

The invention discloses a preparation method for chitin-rich compound fertilizer. The preparation method for the chitin-rich compound fertilizer includes steps that 1, preparing raw materials; 2, preparing compound enzyme liquid; 3, preparing chitin; 4, preparing chelating micro-element; 5, mixing chitin master batch with inorganic nutrient and stirring uniformly, adding to a rotor drum granulator, spraying adhesive, granulating, sieving and packaging to obtain the chitin-rich compound fertilizer. The preparation method for the chitin-rich compound fertilizer uses compound enzyme preparation to process biologically fermented industrial mycelium residue, the industrial mycelium residue is used with inorganic fertilizer to provide comprehensive nutrition nutrient to better promote the plant growth and development, the fertilizing times is reduced, and the labor force is saved; the biologically fermented industrial waste changes the current problem of single chitin source, and the biologically fermented industrial waste can be greatly used for compound fertilizer production and is good for large-scale factory production; the production is easy to perform, and the raw material cost and production cost are lowered so that the compound fertilizer has more competitive advantages; the compound fertilizer is functional and good for upgrading enterprise products.
Owner:QINGDAO LILIHUI BIOTECH

Chuzhou chrysanthemum general flavone grains as well as preparation method and application thereof

The invention discloses Chuzhou chrysanthemum general flavone grains, which are formed by the following raw materials in weight ratio of sucrose powder to dextrin to dry Chuzhou chrysanthemum general flavone extract powder of (0.5-1.5): (1.5-2.5): (0.5-1.5). The Chuzhou chrysanthemum general flavone is prepared into a granular formulation and the granular formulation has the good molding performance; the performance, the granularity, the water, the dissolubility and the like meet the requirements; the quality is controllable and the stability is good; commodity chrysanthemums are prevented from color change and smell loss in a storing process; the content of effective components is not reduced; and a phenomenon that the color of separated parts in an immersing process becomes green is avoided. The Chuzhou chrysanthemum general flavone grains can obviously delay blood caking time of rats with blood stasis due to cold accumulation, reduce the length, and dry and wet weights of in-vitro thrombus, reduce deposition of red blood cells, decrease red blood cell settling speed and raise the NO content of blood serum. The product has the characteristics of convenience for carrying and drinking, easiness for storing, no toxic or side effect, capabilities of preventing, treating and improving abnormal conditions of hemorheology of the rats with the blood stasis, and the like.
Owner:ANHUI JUTAI CHUJU HERBAGE TECH +1

Regeneration method of deactivated SCR denitration catalyst

The invention discloses a regeneration method of a deactivated SCR denitration catalyst. The method includes the steps of: 1) pre-treating a SCR denitration catalyst to remove impurities on the surface; 2) soaking the catalyst in an alkaline cleaning solution to clean the catalyst with assistance of mechanical methods; 3) acid-pickling the catalyst after the alkali-washing for neutralization; 4) soaking and rinsing the acid-pickled catalyst in deionized water so as to partly dry the catalyst; 5) impregnating the dried catalyst in an active solution having viscosity; and 6) finally performing thermal treatment to the catalyst to complete regeneration. By means of the method, the regenerated catalyst is high in content of surface active components and low in content of inner-layer active components, which satisfy the demands of a SCR denitration catalyst in practical application; the activity of the regenerated catalyst is recovered to more than 95% of original activity. The regeneration method has great industrial application prospect.
Owner:北京清树科技发展有限公司

Pharmaceutical composition for treating disease of liver and gallbladder system and preparation and use thereof

The invention discloses a pharmaceutical composition for treating gall stone disease and cholecystitis, which is prepared from three kinds of Chinese medicinal herbs including lysimachia christinae, rough gentian and oriental wormwood. The invention also provides the process for preparing the medicinal compound and all acceptable medicinal preparations.
Owner:南京宇道科技开发有限公司

Medicinal material soaking device and medicinal material soaking method

InactiveCN103981071ASolve the problem that can not be fully released at the same timeImprove qualityAlcoholic beverage preparationEngineeringBULK ACTIVE INGREDIENT
The invention discloses a medicinal material soaking device and a medicinal material soaking method. The device comprises an outer cylinder and also comprises a sealing cover and an annular clapboard arranged between the outer cylinder and an inner cylinder, wherein one end of the outer cylinder is closed, the other end of the outer cylinder is provided with an opening, the sealing cover is matched with the opening, the inner cylinder is nested in the outer cylinder, and a plurality of through holes are formed in the inner cylinder and the outer cylinder. Medicinal materials are classified and put at different positions; as the area of the inner cylinder is small, the areas of the through holes are smaller, the flow velocity of liquid inside and outside is lowered, and the release rate of active ingredients is slowed down; the superficial area of the outer cylinder is large, and the areas of the through holes are also large, so that the flow of the liquid is accelerated, and the release rate of active ingredients is increased; different medicinal materials are released at different speeds, so that the optimal release amount can be regulated, the purpose of improving the active ingredients of the medicinal materials in medicinal liquor or liquid medicine is reached, and the problem of different soaking times of the medicinal materials is completely solved.
Owner:薛玉宝

Monatomic catalyst, preparation method thereof, microelectrode and preparation method and application of microelectrode

The invention relates to a monatomic catalyst. The monatomic catalyst comprises graphite-phase carbon nitride serving as a carrier, and copper monatomic serving as an active component loaded on the carrier, wherein the atom percentage content of the active component in the monatomic catalyst is 0.07 to 0.2 percent; and the graphite phase carbon nitride is mpg-C3N4. The invention also relates to a microelectrode. The microelectrode comprises an electrode, a composite layer which coats the surface of the electrode, and a polymer layer for covering the composite layer, wherein the composite layer comprises the monatomic catalyst or a mixture of the monatomic catalyst and a carbon material. The monatomic catalyst is large in specific surface area, low in active component content, high in hydrogen peroxide selectivity and good in stability. The microelectrode provided by the invention adopts the monatomic catalyst with high selectivity as an electrocatalyst, realizes accurate detection of hydrogen peroxide on the electrode, and is not interfered by oxygen and other majority of substances in the brain at the same time.
Owner:INST OF CHEM CHINESE ACAD OF SCI

Fuel-cell anode catalyst and preparation method thereof

The invention provides a fuel-cell anode catalyst PtRh / Pt / C. The preparation of the catalyst comprises the following steps: taking graphite as a carrier, taking mixed solution of glycol and ultra-pure water as solvent and taking chloroplatinic acid as a precursor; performing chemical reduction under ultrasonic action and then roasting the obtained product to prepare a Pt / C catalyst substrate containing platinum of which the mass is 4 to 20 percent; continuing to take chloroplatinic acid and rhodium chloride as precursors; adopting a forced deposition method to deposit platinum, rhodium and platinum on the Pt surface of the Pt / C substrate respectively in turn; roasting and reducing the obtained product; and obtaining a PtRh / Pt / C surface alloy supported catalyst. The prepared catalyst has the advantages of good stability and high catalytic activity.
Owner:STATE GRID CORP OF CHINA +2

My/LaxSr(1-x)Ti(1-y)O3 catalyst as well as preparation method and application thereof

The invention discloses an My / LaxSr(1-x)Ti(1-y)O3 catalyst as well as a preparation method and an application thereof. The chemical formula of the catalyst is My / LaxSr(1-x)Ti(1-y)O3, wherein M is a precious metal doped active component, LaxSr(1-x)Ti(1-y)O3 is an oxide support, x ranges from 0.05 to 0.95, and y ranges from 0.01 to 0.1. The oxide support is of a 3D ordered mesoporous perovskite structure, and the precious metal doped active component is uniformly supported on the oxide support. The preparation method comprises the following steps: a metal precursor mixed system is mixed with hard template microspheres, the mixture is subjected to high-temperature calcination, and a LaxSr(1-x)Ti(1-y)O3 catalyst precursor is obtained; then reduction treatment is performed, and the My / LaxSr(1-x)Ti(1-y)O3 catalyst is prepared. The preparation process of the catalyst is simple and controllable, the precious metal doped active component is uniformly dispersed on the catalyst surface, and the catalytic activity is high.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI

Preparation method of Huoxiangzhengqi Oral Liquid

The invention discloses a method for preparing ageratum oral liquid. The active ingredients of most of prescription medicinal crops are extracted by using a membrane press filtration, cyclic extraction and separation integrated technology in place of a reflux method, a decoction method and a warm immersion method. A process flow can be simplified, the production period can be greatly shortened, energy can be saved, environmental protection and waste residue utilization can be facilitated, and the recovery rate of the active ingredients can be greatly increased.
Owner:TAIJI GRP CHONGQING FULING PHARM FACTORY CO LTD

Supported catalyst for hydrogen production by methanol reforming as well as preparation method and application thereof

The invention discloses a supported catalyst for hydrogen production by methanol reforming as well as a preparation method and application thereof. The supported catalyst for hydrogen production by methanol reforming comprises the following components in percentage by mass: 15.0-25.0 percent of CuO, 10.0-20.0 percent of assistants, and 60.0-75.0 percent of complex carriers.. The preparation method comprises the steps of: preparing the complex carriers from SiO2 and Al2O3 by virtue of extrusion formation, impregnating the complex carriers in an impregnating solution which is a soluble precursor water solution of copper and the assistants by using an isometric impregnating method, drying at the temperature of 100-120 DEG C for 10-15 hours, and roasting for 3-8 hours under the condition that the roasting atmosphere is nitrogen or air and the roasting temperature is between 350 and 550 DEG C to obtain a catalyst finished product. The supported catalyst for hydrogen production by methanol reforming has the advantages that because the catalyst is prepared by using the impregnating method, the process is simple and easy to control, the cost is greatly reduced, and the performance of the catalyst is good.
Owner:SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI

Soilless culture method utilizing organic fertilizer and application thereof

The invention discloses a soilless culture method utilizing an organic fertilizer. The method comprises the steps of base material preparation and disinfection, filling of the base materials in cultivate furrows, pre-planting preparation, planting, post-planting management and the like. According to the planting step, 5 g to 7 g of root strengthening agents for every plant and fine sand are evenly stirred to be applied to roots. The soilless culture method is applied to tomato planting and comprises the steps of bean pulp fertilizer preparation, root strengthening agent preparation, culture medium processing, seedling planting, post-planting management and two crop rotations every year. According to the method, operation is convenient, quantitative fertilization is achieved, no roots are injured, few diseases exist, no pesticide is needed, the product nitrate content is greatly lowered, the requirement for organic agricultural products can be met, the yield is high, the quality is good, the product has the unique flavor and taste, and meanwhile the technical problem that organic fertilizers and organic matter are difficult to decompose when used in gravel is solved.
Owner:李本兵

Danefukang granules and preparation method thereof

The invention discloses Danefukang granules and a preparation method thereof. The method includes the steps: extracting 90 parts by weight of salvia miltiorrhiza bunge, 50 parts by weight of rhizoma zedoariae, 30 parts by weight of pseudo-ginseng, 50 parts by weight of angelica sinensis and 35 parts by weight of rhizoma corydalis by ethanol, carrying out reduced pressure recovery of ethanol, and concentrating to obtain an extract A; carrying out water addition and decoction on the drug dregs after ethanol extraction, 50 parts by weight of Yunnan radix bupleuri, 50 parts by weight of radix paeoniae rubra, 35 parts by weight of rhizoma sparganii, 30 parts by weight of rhizoma cyperi and 20 parts of liquorice for two times, merging the decoction liquids, filtering, and concentrating to obtain an extract B; and merging the extract A and the extract B, adding auxiliary materials, and preparing the granules. The method comprises that based on a Danefukang decoction agent, the low-concentration ethanol is adopted to extract the medicinal materials, and then the granules are prepared by ways of concentration, granulation and the like. Compared with granules prepared by high-concentration ethanol extraction, the granules obtained by the method have the drug water solubility enhanced, so that appearance properties of the granules after dissolving are significantly improved.
Owner:SICHUAN DIHON MEDICAL DEV +1

Technique for preparing American ginseng shizandra oral liquid and oral liquid thereof

ActiveCN101543534ADecrease the volume of the solutionRaise the preparation levelPharmaceutical delivery mechanismPlant ingredientsQuality controlDosage form
The present invention discloses a technique for preparing American ginseng shizandra oral liquid, wherein the technique comprises the following steps: preparing American ginseng extract liquid; preparing shizandra oral liquid; and compounding the oral liquid, namely the oral liquid is obtained. The invention also relates to the oral liquid obtained by the method. The purified material obtained after macroporous resin adsorption technology according to the invention can highly concentrate the effective composition and has little impurity. The extract yield is only 2-5% of original medicine. And the common poaching method is about 20-30%. The alcohol deposition method is about 15%. Obviously, the technique of the invention has the advantages of reduced dosage, reduced impurity, increased inherent quality, facility for being prepared to modern dosage form oral liquid and convenience for quality control.
Owner:吉林省红五味生物技术有限公司

Chinese medicinal material earthworm enzyme and peptide compound preparation and preparation method thereof

The invention discloses a Chinese medicinal material earthworm enzyme and peptide compound preparation and a preparation method thereof. The earthworm enzyme and peptide compound preparation is prepared by grinding Chinese medicinal herb plants into powder and mixing the powder with water and earthworms. In the method, the nerves of earthworms are suppressed by Chinese medicinal herbs instead of chemicals, so that a drastic stress reaction is not performed on the earthworms and clean active ingredients are slowly and gradually discharged from a body surface. Therefore, the problems of low yield of active ingredients, high product cost, poor product purity and the like in the prior art are solved.
Owner:贵州华肽大健康产业有限公司

Pt-Sn-based mesoporous catalyst for anaerobic dehydrogenation of propane as well as preparation and application thereof

The invention provides a Pt-Sn-based mesoporous catalyst for anaerobic dehydrogenation of propane as well as preparation and application thereof. The average specific surface area of the Pt-Sn-based mesoporous catalyst is 850 m<2> / g. The Pt-Sn-based mesoporous catalyst is obtained by adding CTAB (Cetyltrimethyl Ammonium Bromide) for regulating a carrier structure in a carrier preparation process and loading active components to a carrier by adopting an equivalent-volume impregnation method, wherein Pt and Sn elements are used as the active component. The whole catalyst system provided by the invention is uniform in structure and has high chemical stability.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

Ultrahigh-pressure extraction method for american cockroach

The invention discloses an ultrahigh-pressure extraction method for american cockroach. The ultrahigh-pressure extraction method for american cockroach comprises the following steps: (1) taking american cockroach powder, adding water or ethanol solution with a concentration of 50-90%, and extracting for 1-5 times and for 5-20 minutes every time under an ultrahigh pressure to obtain an extract, wherein the pressure for the ultrahigh-pressure extraction is 100-800MPa, and the temperature is 20-80 DEG C; (2) filtering the extract in the step (1) to obtain a supernatant, and concentrating the supernatant to obtain a concentrate; (3) refrigerating the concentrate in the step (2) for 24-48h, removing upper-layer oil, centrifuging to obtain a supernatant, concentrating, drying and crushing. The ultrahigh-pressure extraction method disclosed by the invention is capable of effectively extracting the effective ingredients of american cockroach, high in yield, simple and convenient to operate, and good in application prospect.
Owner:SICHUAN GOODDOCTOR PANXI PHARMA
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