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106results about How to "Low content of active ingredients" patented technology

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

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

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

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

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

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
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