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123results about How to "Stable decomposition" patented technology

One-bath processing method for pure-cotton knitted fabric scouring and bleaching and pigment dyeing

The invention relates to a one-bath processing method for pure-cotton knitted fabric scouring and bleaching and pigment dyeing, belonging to the technical field of textile dyeing and finishing. The process adopted in the invention comprises the following steps: (1) carrying out scouring and bleaching treatment on pure-cotton knitted fabric, wherein waste liquid discharge is not needed after the treatment is completed; (2) after the scouring and bleaching treatment is completed, adjusting the treating fluid to a certain condition, and then adding catalase, so that residual hydrogen peroxide is sufficiently decomposed; and (3) preparing a pigment dyeing solution by utilizing the residual fluid and dyeing the pure-cotton knitted fabric, adding a binding agent to the residual fluid after the dyeing is completed for fixation, and finally taking out the knitted fabric and carrying out dehydration, drying and curing treatment. According to the invention, two processes, namely pure-cotton knitted fabric scouring and bleaching and pigment dyeing, are combined and carried out in a same treatment bath, thereby not only ensuring the dyeing effect, but also repeatedly utilizing the scouring and bleaching residual fluid, and being remarkable in water-saving and energy-saving effects.
Owner:QINGDAO UNIV

Bi-imidazole ring functional ionic liquid, preparing method thereof, electrolyte and lithium secondary battery

The invention belongs to the field of batteries, and discloses a bi-imidazole ring functional ionic liquid, a preparing method thereof, an electrolyte and a lithium secondary battery. The di-imidazolering functional ionic liquid comprises divalent cations with bi-imidazole rings and ether group functional groups and two anions. The bi-imidazole ring functional ionic liquid has higher thermodynamic stability, electrochemical stability and positive and negative electrode compatibility. Moreover, the preparing method is simple, the product is high in purity and good in hydrophobicity, the thermal decomposition temperature can reach 430 DEG C, the room-temperature conductivity can reach 10<-4>S/cm, the electrochemical window can reach 5.6V vs.Li/Li+, and the safety of the lithium secondary battery can be improved. A bi-imidazole ring ionic liquid electrolyte can effectively inhibit reductive decomposition of imidazolium cations on a graphite negative electrode specially in a graphite negative electrode system, a stable SEI membrane can be formed without addition of any low-boiling-point film-forming additive, so that the battery can be stably circulated under the conditions of normaltemperature and high temperature, and has very high practical application value.
Owner:XIAMEN UNIV

Preparation method of graphene oxide and quinone compound co-modified hydroxyl-containing macroporous foam carrier

The invention relates to a preparation method of a graphene oxide and quinone compound co-modified hydroxyl-containing macroporous foam carrier and belongs to the technical field of water treatment in environmental engineering. The preparation method comprises the following steps: preparing a graphene oxide modified polyurethane foam composite material from a hydroxyl-containing macroporous foam material at the room temperature by virtue of a physical adsorption method, and aminating the composite material until graphene oxide and polyurethane foam contain a certain amount of primary amine; and reacting by virtue of an anthraquinone compound containing sulfonyl chloride groups with primary amine, so as to fix a quinone compound, wherein the hydroxyl-containing macroporous foam material can be polyvinyl alcohol foam or polyvinyl alcohol doped polyurethane foam and the like. According to the preparation method, the quinone compound and graphene oxide are simultaneously fixed to the surface of the macroporous foam material, so that the contact among a redox mediator, graphene and microorganisms is facilitated; and the technical bottlenecks that graphene and the water soluble quinone compound in a water treatment system are difficult to be recycled and flow out along with water to cause secondary pollution are solved.
Owner:DALIAN UNIV OF TECH

Method for simultaneously preparing pyromellitic acid and terephthalic acid with coal serving as raw material

Disclosed is a method for simultaneously preparing a pyromellitic acid and a terephthalic acid with coal serving as a raw material. The method includes firstly, adding potassium hydroxide, a coal sample and distilled water in a high pressure kettle to perform a reaction, cooling after the reaction to obtain an oxidation product, filtering and removing insoluble residues to obtain a filter liquor, acidizing the filter liquor by a concentrated sulfuric acid to enable a water soluble acid to be completely free, extracting a processed solution by butanone to obtain an extract liquor, subjecting the extract liquor to a vacuum evaporation to obtain a concentrate, recycling the butanone, subjecting the concentrate to a vacuum drying to obtain the water soluble acid, subjecting the water soluble acid to a selective decarboxylation in a mixed medium of an sulfuric acid, potassium acid sulfate and the distilled water to obtain the pyromellitic acid, adding coal acids and catalysts which remain after the preparation of the pyromellitic acid in a reacting kettle to perform a constant temperature isomerization reaction of the coal acids to obtain a filter liquor, cooling the filter liquor after the reaction, adjusting potential of hydrogen (pH) of the filter liquor by an diluted hydrochloric acid, precipitating the terephthalic acid in a sedimentation mode, filtering, washing and drying to obtain the refined terephthalic acid. By means of the method, the pyromellitic acid and the terephthalic acid can be simultaneously prepared, the reaction conditions are mild, conditions for devices are low, the terephthalic acid is a main product due to a high yield, and the pyromellitic acid is an auxiliary product.
Owner:LIUPANSHUI NORMAL UNIV

Self-vulcanization oil-soluble molybdenum based bimetallic catalyst and preparation method and applications thereof

The invention relates to the field of hydrogen cracking of heavy oil, and specifically relates to a self-vulcanization oil-soluble molybdenum based bimetallic catalyst and a preparation method and applications thereof. The preparation method comprises following steps: mixing a molybdenum source compound with a second metal salt to generate a molybdenum based bimetallic compound through a chemicalprecipitation method; processing the molybdenum based bimetallic compound by a vulcanizing agent to obtain bimetallic sulfo-molybdate; reacting organic amines with bimetallic sulfo-molybdate to prepare an oil-soluble molybdenum based bimetallic catalyst precursor; and adding a dispersant into the precursor to obtain the self-vulcanization oil-soluble molybdenum based bimetallic catalyst. The prepared catalyst has an excellent hydrogenation activity and a good coke inhibiting performance; furthermore, the preparation technology is simple, the addition amount of catalyst is little, the application is convenient, and the catalyst is suitable for a low cost slurry reactor hydrogen cracking technology, which uses inferior heavy oil rich in metals, coal residues, sulfur, and solids, and has a potential market value.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA) +1

Preparation method of negative ion antibacterial adsorption material composition

The invention provides a preparation method of a negative ion antibacterial adsorption material composition. The method is characterized in that (a) 13X molecular sieve raw powder accounting for 60 to75 percent of the total mass of the composition, alkali metal oxides accounting for 10 to 20 percent of the total mass of the composition, tourmaline powder accounting for 10 to 20 percent of the total mass of the composition, and the balance of bonding agents and hole expansion agents are proportionally mixed to form mixed powder of a uniform system; (b) the mixed powder is soaked into a water solution of AgNO3, then, ultrasonic concussion is performed to form suspension; next, a NaOH solution is added for regulating pH to 10; a mixed solution is formed. (c) the mixed solution is sealed andheated under the hydrothermal condition; after the separation, sintering is performed at high temperature; crushing is performed to obtain the composition. Compared with the prior art, the preparationmethod provided by the invention has the advantages that the cost is low; for indoor pollution gas, the adsorption capability is realized; the decomposition and desorption prevention performance is also realized; a certain number of negative ions can also be released; the adsorption effect is promoted; beneficial effects are achieved on the human body.
Owner:慕林健康负氧离子医用建材(深圳)集团有限公司

Method for removing nitric acid and nitrates from high-level radioactive liquid waste

InactiveCN104517663AThe denitrification process is gentleImprove stability and securityRadioactive decontaminationRadiochemistryAmmonium
The present invention discloses a method for removing nitric acid and nitrates from a high-level radioactive liquid waste. Nitric acid and nitrates are converted to ammonium nitrate; with urea formaldehyde resin as a reducing agent, as NH4NO3 can be easily decomposed into N2, H2O and O2 under the catalysis of H+ and Cl-, the nitric acid and nitrates in the high-level radioactive liquid waste are removed through oxidation-reduction reactions. The method mainly comprises the following steps: (1) UF resins are prepared using a certain ratio of urea and formaldehyde as raw materials and an alkali-acid-alkali process; (2) with ammonia and ammonium salts added, the nitric acid in the high-level radioactive liquid waste can be neutralized and the produced nitrates can be converted into ammonium nitrate which can be easily decomposed by a metathetical reaction; (3) the UF resins are added into the high-level radioactive liquid waste and conduct a denitration reaction under the catalysis of H+ and Cl-. Compared with traditional denitration of high-level radioactive liquid waste, the method in the present invention has a more stable reaction and a lower explosion risk, produces a small amount of NO2, and at the same time the denitrated objects can be both nitric acid and nitrates in the high-level radioactive liquid waste.
Owner:NANJING UNIV OF SCI & TECH

Preparing method for wear-resisting steel used for water-cooling nozzle

The invention discloses a preparing method for wear-resisting steel used for a water-cooling nozzle. The preparing method includes the following steps that smelting and pouring are conducted; heat treatment is conducted; a steel billet obtained after heat treatment is subjected to pretreatment and then put into a boriding agent, the temperature is increased to 910 DEG C to 930 DEG C, heat insulation is conducted for 6 h to 7 h, and then a steel billet generated after boriding is obtained; and covering of a conversion film is conducted. The use amount of the boriding agent ranges from 1.3 g/cm<2> to 1.6 g/cm<2>, and the boriding agent includes, by weight, 4-6 parts of boron carbide, 10-15 parts of borax, 3-4 parts of potassium fluoborate, 0.5-1 part of sodium fluosilicate, 5-7 parts of sodium bicarbonate, 40-50 parts of silicon carbide and 30-35 parts of activated carbon. Covering of the conversion film includes the specific steps that the steel billet generated after boriding is cleaned and then put into a conversion solution, the temperature is increased to 40 DEG C to 50 DEG C, heat insulation is conducted for 18 min to 22 min, and the wear-resisting steel used for the water-cooling nozzle is obtained through drying. The wear-resisting steel has good wear-resisting performance and is good in corrosion resistance performance and high temperature resistance performance.
Owner:CHUZHOU DIBANG TECH

Cordyceps and sea cucumber polypeptide tableted candy with effects of tonifying kidney and producing germs

The invention discloses a cordyceps and sea cucumber polypeptide tableted candy with effects of tonifying the kidney and producing germs. The cordyceps and sea cucumber polypeptide tableted candy is prepared from the following components in percentage by weight: 35 to 50% of cordyceps polypeptide compound, 10 to 15% of sea cucumber polypeptide, 15 to 20% of rhizoma polygonati, 10 to 16% of oysterpeptide, 10 to 16% of fructus lycii, and the balance of medical or food health-care auxiliary materials. The cordyceps and sea cucumber polypeptide tableted candy has the advantages that by utilizingthe specialty of the cordyceps polypeptide compound, the effects of the sea cucumber polypeptide, the rhizoma polygonati, the oyster peptide and the fructus lycii can be further enhanced; by reasonably compounding the components, the functions of nourishing Yin and tonifying the kidney, and producing germs are realized, and the purpose of enhancing the kidney function of the human body is realized; by adopting the raw materials with homology of medicine and food, the safety level is highest, namely that the food raw materials can be reasonably compounded without limiting the usage amounts; theeffects and safety are simultaneously realized, any side effect is avoided, and the dose extreme is avoided.
Owner:佗鹊堂国投生物科技股份有限公司

Ion nitriding device for realizing workpiece nitriding temperature equalization

The invention relates to an ion nitriding device, in particular to an ion nitriding device for realizing workpiece nitriding temperature equalization. The device comprises a furnace body, a furnace chassis, a multifunctional active screen, an upper transmission system, a lower transmission system, an intake system and an exhaust system. The device is characterized in that the furnace body is cylindrical; the furnace chassis is disc-shaped; the furnace body is put rightly above the furnace chassis to form a furnace cavity; the multifunctional active screen is vertically suspended in the furnace cavity; the upper transmission system is fixed at the top of the furnace body; the upper transmission system drives the multifunctional active screen to rotate clockwise; the lower transmission system is fixed on the furnace chassis, and drives workpieces to anticlockwise rotate; the intake system consists of an intake part of the upper transmission system, and an intake part of the multifunctional active screen; and the exhaust system consists of a main exhaust pipe and a branch exhaust pipe. The ion nitriding device effectively improves the intake and exhaust uniformity, increases the gas decomposition rate and stabilizes the cathode and anode distance to realize the workpiece nitriding temperature uniformity and to guarantee consistence of nitriding layer thicknesses and performances. The related device is also suitable for physical vapor deposition and chemical vapor deposition of material surfaces.
Owner:XIHUA UNIV
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