19 results about "Reducing substances" patented technology

The invention discloses a fly ash dioxin separation method, fly ash dioxin separation equipment, a fly ash treatment method and a fly ash treatment system, and solves the technical problems of high energy consumption, high cost and lack of efficient and low-energy-consumption dioxin dissociation and enrichment separation means in a fly ash treatment process in the prior art. Comprising the following steps: mixing fly ash with water to prepare fly ash slurry; the method comprises the following steps: adding an oxidizing agent into fly ash slurry to carry out oxidation reaction so as to carry out oxidation treatment on reducing substances on the surface of the fly ash, adding acid into the fly ash slurry subjected to oxidation treatment to carry out modification reaction so as to etch the fly ash by using the acid to dissociate dioxin particles from the surface of the fly ash and show hydrophobicity; or adding acid into the fly ash slurry to carry out modification reaction, and controlling the pH value of the fly ash slurry after the modification reaction to be 6-12.5; bubbles are generated or introduced into the fly ash slurry after the modification reaction, the dioxin particles are captured by the bubbles and float upwards to form scum, so that the scum is separated from mother liquor, and detoxified slurry is obtained.

The invention belongs to the technical field of precious metal recovery and resource cyclic utilization, and particularly discloses a thermal driving interface micro-droplet mediated precious metal selective recovery method. The method comprises the following steps: firstly, mixing a to-be-treated solution containing noble metal ions with an auxiliary organic phase to construct an organic-inorganic interface system; then heating the organic-inorganic interface system to induce generation of micro-nano-scale micro-droplets at the phase interface, and promoting reduction reaction of noble metal ions to obtain noble metal precipitates; and separating the precious metal precipitate to finish selective recovery of the precious metal. According to the method, precious metal ions are efficiently reduced into simple substances by using high-activity reducing substances generated on the surfaces of the micro-droplets, and selective recovery of precious metal is realized by virtue of a specific reduction reaction threshold value of a system. The self physical and chemical characteristics of the system can also be utilized to promote the reduction products to spontaneously aggregate and grow into large-size particles, so that the subsequent separation is facilitated. The method has the advantages of no need of adding an external reducing agent, simple operation, mild conditions and good selectivity.

A gas production apparatus includes: a separator configured to separate and capture a separated gas including carbon dioxide as a main component from an exhaust gas of exhaust gas equipment; reactors which are downstream of the separator, each of the reactors: (i) containing a reductant configured to contact the separated gas to produce carbon monoxide through a reduction reaction of carbon dioxide; (ii) being configured to separate at least some oxygen atoms split off from carbon dioxide in the reduction reaction; and (iii) having a reducing agent containing a metal oxide configured to reduce carbon dioxide as the reductant; a reducer configured to supply a reducing gas containing a reducing substance configured to reduce the reducing agent oxidized by contact with carbon dioxide; a pressure regulator configured to regulate a pressure of the separated gas; and a flow regulator configured to regulate a flow rate of the separated gas.

The invention discloses a liquid polyferric sulfate reducing substance rapid detection reagent and a preparation method thereof, and belongs to the technical field of reducing substance detection.According to the liquid polyferric sulfate reducing substance rapid detection reagent, qualitative judgment on the content of reducing substances can be directly achieved through solution color changes, complex titration operation and professional instrument analysis are not needed, and the detection accuracy is high. And the detection process is obviously simplified. Due to the rapid detection capability, the content of reducing substances in a product in the reaction kettle can be monitored in real time in the production process, the reaction process can be mastered in time, and time delay caused by detection in a sample feeding laboratory is avoided, so that invalid consumption of a catalyst and unnecessary prolonging of reaction time are effectively reduced, and the overall production efficiency is improved. Meanwhile, the qualitative judgment result of the reagent can directly correspond to the limit value requirement specified by the national standard, the requirement for rapidly screening the product quality in the production process is met, and convenient technical support is provided for ensuring that the final product meets the standard.

The invention discloses a bio-responsive high polymer material and application thereof, and belongs to the technical field of biomedical materials. The bio-responsive high-molecular material provided by the invention contains polymers shown as formulas i to viii. Wherein the polymers of the formulas i to viii have excellent fluorescence performance, aggregation-induced fluorescence enhancement performance, multicolor luminescence performance and biological response capability based on a redox reversible switch, and can be applied to sensing, counterfeiting prevention, metal ion detection, multicolor imaging of in-vivo and in-vitro cells and / or tissues and quantitative detection of in-vivo and in-vitro oxidized and / or reducing substances; active oxygen in in-vivo and in-vitro tissues and cells can be removed to achieve long-acting anti-inflammatory and anti-oxidation effects, and the compound can be used for treatment of oxidative stress related diseases and visual monitoring of the treatment process; the biological activity of enhancing tissue retention, stimulating collagen generation, repairing tissue and resisting oxidation and aging of the tissue is achieved, and the effect of filling and repairing in-vivo cells and tissue can be effectively improved; the compound also has the capability of being chelated with metal ions to form a high-molecular metal complex, and can be used for resisting tumors, resisting bacteria, filling and repairing tissues, promoting collagen generation and the like.

The application discloses a high-pressure leaching system and a high-pressure leaching method based on carbon dioxide and oxygen. The high-pressure leaching system comprises a carbon dioxide injection device, a high-pressure oxygen injection device and a high-pressure liquid injection device. The carbon dioxide injection device is connected with a liquid injection pipeline through a carbon dioxide gas conveying pipeline and a liquid carbon dioxide conveying pipeline. One end of the liquid injection pipeline is connected with a water storage tank, and the other end of the liquid injection pipeline is connected with an injection well. The other ends of the carbon dioxide gas conveying pipeline and the liquid carbon dioxide conveying pipeline are connected with a liquid carbon dioxide storage tank. The high-pressure oxygen injection device comprises a high-pressure oxygen conveying pipeline. One end of the high-pressure oxygen conveying pipeline is connected with a liquid oxygen storage tank, and the other end of the high-pressure oxygen conveying pipeline is connected with the injection well. The high-pressure injection of gaseous or liquid carbon dioxide increases the acidity of underground water, accelerates the dissolution of minerals and the complexation of uranium. The high-pressure injection of oxygen can quickly oxidize uranium-containing minerals and reducing substances, and improve the leaching rate of uranium.

One embodiment of a method for producing a chemical substance according to the present disclosure is a method for producing a chemical substance by converting a starting material in the presence of a catalyst to yield a product, the method including bringing the starting material into contact with the catalyst heated to 400°C or lower by irradiation with microwaves. The starting material and / or the product contains a reducing substance, and the catalyst includes at least one metal oxide selected from among compounds represented by general formula (1). 　General formula (1): MaMbO3 In general formula (1), Ma represents at least one metallic element selected from among the alkaline earth metals and the lanthanoids and Mb represents at least one metallic element selected from among Fe, Co, Ni, Mn, Cu, and Ti.

The invention relates to the technical field of determination of chemical oxygen demand (COD) of a catalyst, in particular to a rapid COD determination method for an improved catalyst system, chemical oxygen demand (COD) serves as a key index for measuring the content of reducing substances in a water body, and the content of the reducing substances in the water body is determined through oxidation treatment of potassium dichromate. The amount of potassium dichromate consumed by the oxidized reducing pollutants in the water sample corresponds to the mass concentration of oxygen, and the measurement result directly reflects the pollution degree of the water body. COD is one of core parameters for water environment monitoring and treatment, a traditional COD determination method takes a potassium dichromate oxidation method as a reference, but has the problems of low reaction efficiency, long time consumption, incomplete oxidation caused by a single catalyst, weak anti-interference capability and the like, depends on manual operation, and is inconvenient to operate. In the prior art, the requirements of modern environment monitoring on rapidness, accuracy and automation are difficult to meet due to large reagent dosage and high secondary pollution risk, and for a complex water sample, a traditional method is easy to cause determination deviation and insufficient in data sharing and remote monitoring capability, so that the intelligent development of water environment monitoring is restricted.

The present application belongs to the field of gas detection, and relates to a combined detection tube for detecting carbon monoxide concentration in blood. The device of the present application is composed of a sample adding tube and a detection tube. The filler section arranged in the sample adding tube can effectively destroy red blood cells to release CO gas under the action of Cr(VI) / Cr(III) redox system, and at the same time, the reducing substances such as glutathione (GSH) and ascorbic acid in blood are removed through the interference removal section, thereby significantly improving the specificity and accuracy of detection. The indicating glue section in the detection tube adopts a platinum-selenium compound and a potassium iodate system, which occurs a color reaction in the presence of CO: I2O5+5CO→I2+5CO2, and the generated iodine element presents a brown color development band, the length of which is positively correlated with the concentration of HbCO, so as to realize the visual quantitative analysis of the content of carboxyhemoglobin in blood.

The invention relates to the technical field of zinc electrolysis, in particular to a regulation and control method for efficiently and rapidly improving the concentration of manganese ions in a zinc electrolytic solution. According to the technical scheme, the method comprises the following steps: in a wet leaching process, adding a reducing substance into a material system containing manganese dioxide, so that the manganese dioxide is reduced into soluble Mn < 2 + >; the reducing substance is metal zinc particles and / or zinc concentrate containing Fe < 2 + >, and electrolysis parameters are cooperatively regulated and controlled: in the electrolysis process, the current density is controlled to be less than 300 A / m < 2 >, the electrolysis period is prolonged to 36-48 hours, and the temperature of an electrolyte is controlled to be 34-36 DEG C. According to the method disclosed by the invention, the concentration of manganese ions in the solution is remarkably improved within a short time through the synergistic regulation of the overwet method and the electrolysis, the manganese content of the lead-silver residues is greatly reduced, the standard reaching rate of 0 # zinc is 100%, meanwhile, the consumption of manganese salt is remarkably reduced, and good technical effects and economic benefits are achieved.

The application discloses an energy storage device based on reverse electrodialysis technology, and designs the structure of the energy storage device, so that the transmission ions can be transmitted in the first structure and the second structure to form an internal loop; meanwhile, due to the existence of oxidizing substances and reducing substances, when the oxidizing substances undergo reduction reactions and the reducing substances undergo oxidation reactions, an oxidation-reduction potential difference can be formed; since the oxidation reactions and the reduction reactions continuously proceed, the oxidation-reduction potential difference can be continuously provided, and when an electric signal is outputted based on at least the oxidation-reduction potential difference, the electric signal can be continuously outputted at a high level, so that the energy storage device has a high output power density and good output stability.

To provide an electrochemical device capable of synthesizing a carbonyl compound with high selectivity.SOLUTION: An electrochemical device 10 electrochemically synthesizes a carbonyl compound, and includes a first electrode 11, a second electrode 12, a first electrolytic part 21 having the first electrode 11, a reaction part 31, and a first connection path 41 connecting the first electrolytic part 21 and the reaction part 31. The first electrolytic part 21 has a first redox species, the reaction part 31 has a second redox species, and the standard oxidation-reduction potential of the first redox species is positively larger than the standard oxidation-reduction potential of the second redox species.SELECTED DRAWING: Figure 1

This invention discloses a rapid visual identification method and kit for the vintage of buckwheat liquor based on a dual-channel colorimetric reaction. Addressing the issue of counterfeit vintage in buckwheat liquor, it sets up two independent detection channels: the first channel uses a solid-phase extraction column with a mixture of polyamide and uncapped C18 filler or uncapped C18 filler to remove flavonoid interference, controlling the sample flow rate through the column at 0.8~1.2 mL / min, and uses a p-toluenesulfonic acid-p-dimethylaminobenzaldehyde solid colorimetric strip to detect the aging year of the base liquor for 2~5 minutes; the second channel uses ferric chloride-potassium ferricyanide colorimetric paper to detect the aging time based on the negative correlation between reducing substances and bottle storage time. The dual-dimensional results comprehensively determine the authenticity of the vintage label. This invention is safe to operate, provides intuitive results, and offers strong anti-counterfeiting features with dual verification, making it suitable for various scenarios such as consumer self-inspection, liquor company quality control, and market supervision.

The application provides a preparation method and application of Prussian blue and activated carbon-Prussian blue material. The preparation method of the Prussian blue comprises the following steps: adding a reducing agent to an aqueous solution containing ferricyanide complex for reduction treatment, so that the ferricyanide complex is reduced into ferrocyanide, and a ferrocyanide solution containing ferrocyanide and other reducing substances is obtained; adding a first iron salt solution to the ferrocyanide solution for de-reduction treatment, so that the other reducing substances contained in the ferrocyanide solution are removed, and a ferrocyanide ferrous carbonate precipitate and a post-precipitation liquid containing ferrocyanide are obtained through solid-liquid separation; and adding a second iron salt solution to the post-precipitation liquid for post-treatment, so that the ferrocyanide reacts with iron ions to obtain a Prussian blue slurry. The preparation method provided in the examples of the application can reduce the impurity content of the Prussian blue, improve the purity of the Prussian blue, and is beneficial to the preparation of activated carbon-Prussian blue material with better energy absorption performance.

The application discloses a color developing agent stabilizer and a stabilizing method. The application provides a color developing agent stabilizer, which comprises a reducing substance and a weak acid buffer. The pH of the weak acid buffer is 3.8-6.2. The reducing substance is one or more of sodium sulfite, sodium bisulfite, sodium thiosulfate or 1-mercapto glycerol. The color developing agent is one or both of a phenothiazine color developing agent or a triphenylmethane color developing agent. The color developing agent can be stably stored by using the stabilizer. The method for stably storing the color developing agent is to dissolve the color developing agent in the stabilizer. The color developing agent can be stably stored in the stabilizer for two weeks, and the stabilizer does not have an inhibiting effect on the subsequent use of the color developing agent. The application not only solves the problems of low stability and spontaneous color development of the color developing reagent, but also avoids the influence of the stabilizer on the performance of the color developing agent, and provides a new method for storing the color developing agent.

The present application provides a kind of hydrogenation catalyst and its preparation method.The hydrogenation catalyst of the present application includes noble metal and the carrier of supporting the noble metal, wherein the carrier is modified by polyhydroxy reducing substance.The preparation method of the hydrogenation catalyst of the present application includes: (1) the carrier is impregnated in the polyhydroxy reducing substance, or the carrier is impregnated in the solution containing the polyhydroxy reducing substance, and the modified carrier is obtained after drying;(2) the obtained modified carrier is impregnated in the solution containing noble metal precursor and heated to react, and the product is dried to obtain the hydrogenation catalyst.The present application also provides the use of hydrogenation catalyst in the hydrogenolysis reaction of α, α-dimethylbenzyl alcohol and the reaction of preparing isopropylbenzene by hydrogenation of α-methylstyrene.

The application discloses a harmless treatment method and treatment system for magnesium slag, which comprises the following steps: utilizing the residual heat and / or external heat of the magnesium slag, and performing an oxidation decarburization reaction on the magnesium slag in the presence of oxygen-containing gas; the oxygen content of the oxygen-containing gas is greater than or equal to 15 wt%; the volume of the oxygen-containing gas is 50 to 100 times of the volume of the magnesium slag; and the temperature of the oxidation decarburization reaction is greater than or equal to 500 DEG C. The method can effectively utilize the residual heat of high-temperature magnesium slag to perform the oxidation decarburization, solve the problem that strong reducing substances, residual carbon and other impurities are enriched in the magnesium slag due to the magnesium smelting process, especially the magnesium smelting raw material, and the toxic and harmful gases such as CO, H2S and CH4 are released in the resource utilization process of the magnesium slag, effectively accelerate the rapid decomposition of the impurities such as residual carbon in the magnesium slag, obtain homogeneous impurity-removed magnesium slag, improve the utilization level and efficiency of the magnesium slag, and promote the large-scale utilization of the magnesium slag.

To provide a carbon material manufacturing apparatus, a carbon material manufacturing system, and a carbon material manufacturing method that can efficiently produce carbon materials from carbon dioxide. [Solution] According to one aspect of the present invention, an apparatus for producing carbon materials is provided. This apparatus comprises a first reaction unit for producing carbon monoxide from carbon dioxide, a second reaction unit for producing carbon materials from carbon monoxide, and a gas line connecting the first reaction unit and the second reaction unit. The first reaction unit has at least one reactor containing a reducing agent. The reducing agent is brought into contact with a raw material gas containing carbon dioxide to reduce carbon dioxide into carbon monoxide and is also brought into an oxidized state, and the oxidized reducing agent is reduced by contact with a reducing gas containing a reducing substance.

The invention discloses a high-pressure leaching system and method based on carbon dioxide and oxygen, and the high-pressure leaching system comprises a carbon dioxide injection device, a high-pressure oxygen injection device and a high-pressure liquid injection device, the carbon dioxide injection device is connected with the liquid injection pipeline through the carbon dioxide gas conveying pipeline and the liquid carbon dioxide conveying pipeline, one end of the liquid injection pipeline is connected with the water storage tank, and the other end of the liquid injection pipeline is connected with the injection well. The other ends of the carbon dioxide gas conveying pipeline and the liquid carbon dioxide conveying pipe are connected with a liquid carbon dioxide storage tank, the high-pressure oxygen injection device comprises a high-pressure oxygen conveying pipeline, one end of the high-pressure oxygen conveying pipeline is connected with the liquid oxygen storage tank, and the other end of the high-pressure oxygen conveying pipeline is connected with an injection well. Gaseous or liquid carbon dioxide is injected at high pressure, the acidity of underground water is increased, mineral corrosion and uranium complexing are accelerated, uranium-containing minerals and reducing substances can be rapidly oxidized by injecting oxygen at high pressure, and the leaching rate of uranium is increased.