860results about How to "Reduce oxidation rate" patented technology

The invention relates to a honeycomb flue gas denitrification catalyst and a preparation method thereof, belonging to the technical field of inorganic new materials. The honeycomb flue gas denitrification catalyst is mainly prepared by carrying out extrusion molding and sintering on the following raw materials in parts by weight: 68-92.8 parts of nano TiO2, 3-10 parts of nano SiO2, 2-10 parts of glass fiber, 0.1-0.5 part of extrusion aid, 0.1-0.2 part of carboxymethyl cellulose, 0.1-0.3 part of polyoxyethylene and 0.1-0.2 part of sesbania powder. The preparation method comprises the following steps: (1) weighing the nano TiO2 and nano SiO2 powder, adding the extrusion aid, adding water while stirring to obtain paste, and adding ammonia water to regulate the pH value to 7-11; (2) adding the rest of raw materials, evenly mixing, and extruding with an extruding machine to obtain a honeycomb blank; (3) drying the blank at 30-70 DEG C under the relative humidity of 20-100% for 7-15 days; and (4) calcining the dried blank at 250-300 DEG C for 8-15 hours, calcining at 380-420 DEG C for 5-10 hours, and calcining at 580-620 DEG C for 8-12 hours to obtain the finished product.

A cyclic process for the removal of NO_x from a NO_x containing feed gas, and optionally removal mercury vapour and/or sulfur dioxide is provided. A process is also provided by which an iron chelate absorbent may be thermally regenerated.

The invention discloses a preparation method of modified micron zero-valent iron and an application method of the modified micron zero-valent iron in remediation of heavy metal contaminated soil. The preparation method of the modified micron zero-valent iron comprises the steps of cleaning of iron raw materials, preparation of micro iron, ultrafine grinding and modifying treatment. A modifying agent composed of water, xanthan gum, sulfide, a stabilizing agent, zeolite and blast furnace slag is adopted in the step of modifying treatment. The preparation method of the modified micron zero-valent iron has the beneficial effects that the production process of the modified micron zero-valent iron is simple, and the effect similar or superior to micron zero-valent iron is achieved while the cost is reduced; and in addition, the reaction activity is controlled, the oxidation rate is decreased, excellent stability is obtained, and the acting time of the micron zero-valent iron is longer. By the adoption of the application method of the modified micron zero-valent iron, the remediation cost of heavy metal contaminated underground water is further reduced. According to the preparation method of the modified micron zero-valent iron and the application method of the modified micron zero-valent iron in remediation of heavy metal contaminated soil, organic fertilizer is added in the soil treatment process so that the fertility of soil can be improved, the structure of soil can be improved through humic acid produced by the organic fertilizer, heavy metal elements, such as lead, chromium and arsenic, in underground water can be removed, and the concentration of pollutants such as nitrate and perchlorate can be reduced.

The invention relates to high-temperature abradable seal coating with single-layer or multi-layer structure, wherein the high-temperature abradable seal coating with single-layer structure is providedwith a bonding bottom layer sprayed on a base body, and an oxygen barrier layer and a seal surface layer are sequentially sprayed on the bonding bottom layer; on the basis of the high-temperature abradable seal coating with single-layer structure, at least another seal surface layer is needed to be sprayed on the seal surface layer to form the high-temperature abradable seal coating with multi-layer structure; the bonding bottom layer is made of NiCrAlY or NiCoCrAlY alloy powder, the oxygen barrier layer is made of composite agglomerated powder of nano yttria, partially stable zirconia and nano Alpha-Al2O3, and the seal surface layer is made of nano Y-PSZ based high-temperature seal coating materials. The high-temperature abradable seal coating has better high temperature stability, thermal shock resistance and abradability during the use.

The invention provides a coking-resistant hydrocarbon cracking furnace pipe and a preparation method thereof. A cracking furnace pipe is subjected to two-stage high-temperature heat treatment in a H2- and vapor-containing low-oxygen partial pressure gas atmosphere so that a manganese-chromium spinel coating is formed on the inner surface. In the first-stage high-temperature heat treatment, a mole ratio of H2 to vapor is in a range of 1792-107 and in the second-stage high-temperature heat treatment, a mole ratio of H2 to vapor is in a range of 1-1791. The manganese-chromium spinel has a structural formula of MnxCr3-xO4 and x is in a range of 0.5-1.5. The manganese-chromium spinel coating reduces deposition of coke on the inner wall of a radiation-section furnace pipe in hydrocarbon cracking and prolongs an operation period and a use life of the furnace pipe.

The invention discloses a coating method for a core-shell novel positive electrode material for a lithium ion battery. A uniform core-shell structure is formed by effective compounding two materials with electrochemical activity; and an effect for enhancing electrochemical performance of the materials is achieved by improving interface state of the materials and reducing side reactions. The coating method comprises the following steps of dispersing the positive electrode material for the lithium ion battery in deionized water and auxiliarily dispersing in a certain manner to obtain a slurry; dissolving a lithium source, an iron source, a phosphate radical source and a chelating agent in water; stirring for 1 hour at a room temperature to obtain a sol; adding the slurry obtained in the first step in the sol; adjusting a pH; then heating to a temperature of 80 DEG C; keeping the temperature for 1-12 h to form a gel; then drying the gel at a temperature of 100 DEG C; sintering the dry gel obtained by the former step for 1-10 hours at a temperature of 600-900 DEG C under the protection of nitrogen; and cooling to a room temperature naturally, so that the core-shell novel positive electrode material for the lithium ion battery is obtained.

The synthesis of deuterated analogues of rapamycin is disclosed together with a method for use for inducing immunosupression and in the treatment of transplantation rejection, graft vs host disease, autoimmune diseases, diseases of inflammation leukemia/lymphoma, solid tumors, fungal infections, hyperproliferative vascular disorders. Also described is a method for the synthesis of water soluble deuteratred rapamycin compounds and their use as described above.

An educational game (and learning management system and methods pertaining to the same) can be configured for the effective teaching of advanced educational curriculum, such as STEM subjects for high school and above. The educational game is configured to integrate social context, real scientific principles and strategic tradeoffs within game mechanisms. This covert teaching and testing environment promotes exploration, individualized discovery, repeat engagement, and systems thinking and planning skills. The educational game can be dynamically and procedurally generated.

A plastic film that includes one or more plastic layers and one or more types of primary additives. The types of primary additive can include a liquid absorbing material, a gas absorbing material, a biocide, a heat generating material, and/or a foaming agent.

The present invention discloses probiotics enriched crisp apple products and a preparation method thereof, and belongs to the technical field of agricultural product processing. Apples are used as raw materials, the apples are washed, the washed apples are blanched, a vacuum soaking method is used to enrich probiotics into apple tissues, and then a vacuum freeze-drying and vacuum microwave combined drying method is used to prepare the probiotics enriched crisp apple products. The method comprises the following steps: (1) raw material washing and blanching; (2) probiotic soaking liquid preparing; (3) vacuum soaking; and (4) vacuum freeze-drying and vacuum microwave combined drying. The prepared probiotics enriched fruit and vegetable crisp products are mellow in fruit fragrance, and crisp and tasty. The viable probiotic number can be maintained at 10<7> CFU/g at 25 DEG C for 90 days or more. The preparation method avoids the two major defects of high cholesterol risk of the probiotic fermented milk products and the non-consumption of lactose intolerant population, and the products combine health care and leisure, and have broad market prospects.

The invention provides antioxidant salen-metal complexes, compositions of such antioxidant salen-metal complexes having superoxide activity, catalase activity, and/or peroxidase activity, compositions of salen-metal complexes in a form suitable for pharmaceutical administration to treat or prevent a disease associated with cell or tissue damage produced by free radicals such as superoxide, and cosmetic and free radical quenching formulations of salen metal compounds.

A method for oxidizing organic matter contained in an aqueous effluent and an installation for implementing the method. The method comprises the following steps: injecting into a tubular body the aqueous effluent; bringing the aqueous effluent to a pressure P1, corresponding to the critical pressure of the aqueous effluent; bringing the aqueous effluent to a temperature T1; and injecting into the tubular body at n points spaced apart from one another, n fractions of at least an oxidizing composition, so that a portion of the thermal energy produced by the oxidation reaction increases the temperature of the reaction mixture from said temperature T1 to temperature T2>T1 according to an increasing curve, whereby the organic matter is oxidized, the reaction mixture continuously developing from a sub-critical liquid state to the supercritical domain.

The invention discloses an antioxidant composite protective layer for a high-temperature film sensor and a manufacturing method of the antioxidant composite protective layer, and belongs to the technical field of film sensors. The antioxidant composite protective layer sequentially comprises a BN insulation layer, a ZrB2-based composite ceramic layer and a Al2O3 covering layer from bottom to top, wherein the BN insulation layer, the ZrB2-based composite ceramic layer and the Al2O3 covering layer are sequentially deposited on a sensitive function layer of the film sensor in the way of evaporation or sputtering or the like. By means of the antioxidant composite protective layer for the high-temperature film sensor, the antioxidant protective requirements of the aero-engine high-temperature film sensor at the high temperature of 1000-1700 DEG C can be met, the stability and reliability of the film sensor in high-temperature high-pressure severe environment are effectively improved, and the service life of the film sensor in high-temperature high-pressure severe environment is effectively prolonged.

The invention provides novel energy-saving toughened three-silver-layer low-radiation coated glass, which is characterized in that: a film structure of the glass sequentially consists of the following layers from a glass substrate to the outside: the glass substrate, a first composite dielectric medium layer (11), a first reflection deduction layer (12), a first silver layer (13), a first protective layer (14), a second dielectric medium layer (21), a second reflection deduction layer (22) plus a second silver layer (23), a second protective layer (24), a third dielectric medium layer (31), a third reflection deduction layer (32), a third silver layer (33), a third protective layer (34), a fourth composite dielectric medium layer (35) and a fourth protective layer (36). The novel energy-saving toughened three-silver-layer low-radiation coated glass has the advantages that: an infrared reflection capacity is higher than that of a double-silver-layer low-radiation film with the same visible light transmission value, the radiation rate on the surface of the film layer is low, the shading coefficient is much lower, and the reflection rate is low; and the film has high hardness and high oxidation resistance, and different cold processing and hot treatment can be carried out after the film coating.

The invention disclosed relates to an oxidized metal matrix composite coated substrate, comprising a substrate made of a material selected from the group consisting of a chromia-forming Fe, Ni and/or Co based alloy containing an amount of Cr ranging from 16 to 30 wt %, and an oxide-dispersion strengthened Cr-based alloy and a plain Cr-based alloy, and an oxidized metal matrix composite coating comprising at least two metals and reactive element oxide particles in the form of a tri-layer scale on the substrate surface comprising an inner chromia layer, an intermediate layer of a spinel solid solution formed by Cr and one or more of the deposited metals selected from the group consisting of Ni, Co, Cu, Mn, Fe and Zn and a mixture thereof, and an electrically conductive top layer comprising oxides of one or more deposited metals selected from the group consisting of Ni, Co, Cu, Fe, Mn, Zn and a mixture thereof, which is substantially free from Cr ions, and wherein one or more of such layers contain particles of doped or undoped oxides of a rare earth metal selected from the group consisting of Ce, Y, La, Hf, Zr, Gd and a mixture thereof.

The invention belongs to the field of environment protection technology and denitration catalysis, and particularly relates to a recycling method of an abandoned SCR (Selective Catalytic Reduction) denitration catalyst. The recycling method comprises the following steps: firstly carrying out soot blowing and impurity removing on the abandoned SCR denitration catalyst; then carrying out ultrasonic washing by sequentially using deionized water and an acid solution; then smashing the abandoned SCR denitration catalyst and carrying out structure adjustment; finally carrying out active loading by adopting an equivalent-volume impregnation method, and carrying out forming, drying and roasting on an obtained material, thus obtaining a recycling catalyst. The recycling method disclosed by the invention is simple in technology, has stronger operability and is suitable for large-scale production, the denitration efficiency of the recycling catalyst is up to and even exceeds the level of a fresh catalyst, and the oxidation efficiency of SO2 is controlled to the maximum; not only can waste be changed into wealth and harmfulness be changed into benefit, but also a series of potential environment pollution problems can be solved, so that considerable economic benefit and immeasurable environment benefit are obtained.

The invention belongs to the technical field of inorganic non-metal materials, and in particular relates to an anti-oxidation decarburized coating in the process of billet rolling and a preparation method thereof. The invention provides a low-cost and good-performance anti-oxidation decarburized coating in the process of billet rolling, which comprises the following raw materials in parts by weight: 20-60 parts of vanadium extraction tailings, 0-40 parts of agglutinant and 30-60 parts of binding agent. The coating is used in the process of billet rolling, can effectively reduce the oxidation rate and carbon loss of billets and can improve the heating efficiency of a heating furnace for the billets. The preparation method is a solution to the problem of pollution of vanadium extraction tailings, and can reduce the production cost of the anti-oxidation decarburized coating by changing the tailings into valuables.

A reinforced carbon foam material is formed from carbon fibers incorporated within a carbon foam's structure. First, carbon fiber bundles are combined with a liquid resol resin. The carbon fiber bundles separate into individual carbon fiber filaments and disperse throughout the liquid resol resin. Second, the carbon fiber resin mixture is foamed thus fixing the carbon fibers in a permanent spatial arrangement within the phenolic foam. The foam is then carbonized to create a carbon fiber reinforced foam with improved graphitic characteristics as well as increased strength. Optionally, various additives can be introduced simultaneously with the addition of the carbon fiber bundles into the liquid resol, which can improve the graphitic nature of the final carbon foam material and/or increase the foam's resistance to oxidation.

The invention provides a cobalt-based high-temperature alloy wire which is prepared from the following chemical components in percent by mass: 0.06-0.12% of C, less than or equal to 0.3% of Si, 1-1.8%of Mn, less than or equal to 0.015% of P, less than or equal to 0.015% of S, 19.2-20% of Cr, 9.5-10.5% of Ni, 14.2-15.5% of W, less than or equal to 2.8% of Fe, less than or equal to 0.4% of other impurities and the balance Co. By adding 19.2-20% of Cr, the cobalt-based high-temperature alloy wire has excellent corrosion resistance, and a condition that high-temperature strength is decreased as aresult of a double phase area as the content of Cr is too high to promote generation of an epsilon-Co phase and a sigma phase is avoided. Elements such as massive Co, 14.2-15.5% of W and 19.2-20% ofCr and the like in the cobalt-based alloy can reduce stacking fault energy, so that the high-temperature strength of the alloy is improved. The content of W is controlled at 19.2-20%, so that it is ensured that a condition of prominent work hardening of the alloy, difficulty in cold processing and poor stability as the too high W content is avoided. As the cobalt-based high-temperature alloy wirecontains 9.5-10.5% of Ni, the tissue stability of the alloy is improved favorably, and precipitation of a Co7W6 phase is reduced. By adding 1.1-1.8% of Mn, the oxidation resistance of a Ni-Cr alloy isimproved effectively.

The invention provides an electrode assembly and a lithium ion battery. The electrode assembly comprises a positive pole piece, an isolating membrane and a negative pole piece, wherein the negative pole piece comprises a negative current collector and a negative active material layer, and further comprises a metal lithium layer, the metal lithium layer is formed by a plurality of regular or irregular strip-shaped lithium-rich areas, and the plurality of lithium-rich areas are distributed at intervals in the length direction of the negative pole piece in a non-continuous form. The electrode assembly also satisfies the following conditions: the ratio of the negative electrode capacity per unit area to the positive electrode capacity per unit area is 1.2-2.1, and the ratio of the negative electrode capacity per unit area to the sum of the positive electrode capacity per unit area and 80% of the capacity of the metal lithium layer on the surface of the negative electrode active material layer per unit area is greater than or equal to 1.10. The lithium ion battery disclosed by the invention has relatively high lithium supplementing efficiency and relatively low direct-current impedance,and meanwhile, the lithium ion battery also has long cycle life and storage life.

The invention relates to a method for keeping the dual-spore mushroom fresh, which comprises collecting and pre-cooling the dual-spore mushroom. The invention is characterized in that the pre-cooled dual-spore mushroom is arranged in the air adjusting room at 50-80% volume, while the humidity of room is 95+-4% and the temperature is 1-3Deg. C; the air adjusting room is fed the mixture of O2, CO2 and N2, to confirm the O2 density at 4.6-5.3% and the CO2 density at 15.0-17.05< and the volume ration between O2, CO2, and N2 at 3-6:15-20:74-82. Compared with present technique, the invention can store the dual-spore mushroom with air adjustment, to prolong the storage period to 15 days with simple process, low cost and non-chemical left.

The invention discloses a longsnout catfish fillet coating antistaling agent, a preparation method and a resh-keeping method thereof. Specifically, the longsnout catfish fillet coating antistaling agent comprises the following components in terms of the concentration in an aqueous solution, 10-25g/L chitosan, 1-3g/L a rosemary extract, 2.5-5g/L glycerol, 10ml/L acetic acid, 2.5-5g/L Tween-80, and water as the solvent. According to the invention, the rosemary extract is added into the chitosan solution to prepare the composite coating antistaling agent, and the bacteriostatic and antioxidant capacity of the coating antistaling agent can be greatly improved. After coating of longsnout catfish fillets, microbial growth can be inhibited, the grease oxidation rate can be slowed down, the juice loss is reduced, and longsnout catfish fillets can maintain good quality. By storing the longsnout catfish fillets using the composite coating antistaling agent under an environment of 0-5DEG C, the shelf life can reach 10-14d. The longsnout catfish fillet coating antistaling agent provided by the invention is simple to use, easy to operate and low in cost, and is conducive to commercial application.