32 results about "Hyponitrite" patented technology

The present invention is directed to a process for treating, reducing, and/or stabilizing various wastes or flue gases. In one embodiment, the process is directed to treatment of alkali bearing wastes that include nitrate and/or nitrite-rich wastes. Optionally, the disclosed method can be utilized for treatment of hazardous wastes, including radioactive hazardous waste compounds. In general, the present invention includes processing a waste or gaseous stream with the addition of suitable carbon-containing additives to treat and reduce nitrogen-containing compounds in the waste. Additives may be gaseous, liquid or solid reduction-promoting agents, catalysts, and the like. The reaction products obtained from the process of the invention include mainly alkali carbonate, nitrogen, hydrogen, carbon monoxide and carbon dioxide.

The invention relates to an iron rust conversion agent for removing and preventing rust on the surface of steel. The iron rust conversion agent can be coated on a rusty surface of the steel, the iron rust is conversed into a layer of a protective film, the complicated components of the rust layer are converted into stable products, and the stable products show no rust in the relatively long time in the atmosphere, therefore, the rusty surface of the steel can be directly coated and constructed without removing the rust. A synthetic resin emulsion is used as a main film-forming agent, pyrogallic acid and tannic acid are used as main conversion agents, citric acid is used as an auxiliary conversion agent, and a film-forming auxiliary agent is adopted to realize the curing film-forming at room temperature, thus the compactness and water resistance of the film are improved; and moreover, isopropyl alcohol is used as a solvent and penetrating agent, so as to stabilize the rusty layer. The iron rust conversion agent is sprayed to the rusty surface of the steel, thus a compact and uniform black film is formed on the surface of the steel in short time. In addition, the iron rust conversion agent has advantages of simple preparation process, low cost, stable performance, economy and practicality, safety and environmental friendliness, not containing of toxic and harmful ingredients such as formaldehyde, benzene and nitrite, and no simulation on operating personnel and the like.

A lithium secondary cell which comprises a positive electrode and a negative electrode which have a specific composition and specific properties and a nonaqueous electrolytic solution containing a cyclic siloxane compound represented by the formula (1), a fluorosilane compound represented by the formula (2), a compound represented by the formula (3), a compound having an S-F bond, a nitric acid salt, a nitrous acid salt, a monofluorophosphoric acid salt, a difluorophosphoric acid salt, an acetic acid salt, or a propionic acid salt in an amount of at least 10 ppm of the whole nonaqueous electrolytic solution. The lithium secondary cell has a high capacity, long life, and high output. In the general formula (1), R<1> and R<2> each is a C1-12 organic group; and n is an integer of 3-10. In the general formula (2), R<3> to R<5> each is a C1-12 organic group; x is an integer of 1-3; and p, q, and r each is an integer of 0-3, provided that 1=p+q+r=3. In the general formula (3), R<6> to R<8> each is a C1-12 organic group; and A is a group constituted of H, C, N, O, F, S, Si, and/or P.

The invention discloses a making method of 4-hydroxy-6-oxy-7-ethoxy-3-quinoline carboxylic acid carbethoxy in the coccidiostat domain, which comprises the following steps: A. preparing catechol diethyl ether; B. making .3, 4-diethyloxy nitrobenzene; C. making 2-ethoxy-4-nitrophenol; D. making 3-ethoxy-4-oxynitrobenzene; E. making 3-ethoxy-4-oxyphenylamine; F. preparing N-methylene ethyl malonate-3-ethoxy-4-oxyphenylamine; G obtaining the product.

These heterodiamondoids are diamondoids that include heteroatoms in the diamond lattice structure. The heteroatoms may be either electron donating, such that an n-type heterodiamondoid is created, or electron withdrawing, such that a p-type heterodiamondoid is made. Bulk materials may be fabricated from these heterodiamondoids, and the techniques involved include chemical vapor deposition, polymerization, and crystal aggregation. Junctions may be made from the p-type and n-type heterodiamondoid based materials, and microelectronic devices may be made that utilize these junctions. The devices include diodes, bipolar junction transistors, and field effect transistors.

The invention discloses a method for preparing 2, 3, 4, 5, 6-pentafluorophenylcarbinol. The preparation method comprises the following steps: using 2, 3, 4, 5, 6-pentafluorocyanobenzene as an initial raw material, introducing hydrogen in an organic solvent containing acid, and hydrogenating and reducing the raw material under the action of a catalyst at normal temperature of 70 DEG C and normal pressure of 30atm to obtain 2, 3, 4, 5, 6-pentafluorobenzylamine salt; and diazotizing the obtained 2, 3, 4, 5, 6-pentafluorobenzylamine salt and nitrite in an aqueous solution containing acid at a temperature of between 45 and 70 DEG C, then heating to a temperature of between 70 and 100 DEG C to carry out hydrolysis reaction, and after fully reacting, separating and drying the reaction liquid to obtain the 2, 3, 4, 5, 6-pentafluorophenylcarbinol. The method has the advantages that the product prepared by the method has high purity, and the total yield is more than 83 percent; the raw material cost is low, and the used solvent and catalyst can be recycled, so as to reduce pollution to environment; and diazotization and hydrolysis reaction are finished in one reactor in the whole reaction process, so the method has fewer steps, comparatively moderate conditions and simple operation, and is preferably applied to industrialized production.

A method of detecting peroxynitrite in a sample is described comprising the steps of: (a) providing a complex of a saccharide with an aryl boronate compound of formula (I): Fp-L¹-Z-L²-Ar—B(OH)₂ (I) wherein: Fp comprises a fluorophore; L¹ and L² are linker groups; Z is a fluorescence switch; and Ar is optionally substituted aryl; (b) contacting said aryl boronate-saccharide complex with said sample, whereby peroxynitrite in said sample cleaves said aryl boronate-saccharide complex to produce a compound of formula (II): F-L¹-Z-L²-Ar—OH (II); and (c) detecting a decrease in a fluorescence intensity of said fluorophore resulting from said cleavage reaction in step (b). Peroxynitrite reacts quantitatively, rapidly, and selectively in step (b) of the reaction, whereby medical conditions associated with elevated peroxynitrite can be diagnosed. Also provided are compounds of formula (I) for use in the methods.

The invention discloses a method for regenerating active white clay waste slag. The method comprises the following steps of: a) mixing the active white clay waste slag and sulfuric acid solution; b) making a solid matter by using the mixed sludge; c) burning the solid matter at temperature of 600 to 700 DEG C; and d) smashing the burned solid matter. By the method for regenerating the active white clay waste slag, the used active white clay waste slag is subjected to acidization and high-temperature roasting; the process is simple, the treatment time is short, the process is convenient to operate, and continuous industrial production can be realized; the regenerated active white clay can be reused, so that the fund is saved and pollution to the neighboring environment caused by peculiar smells due to long-time occupation stacking can be avoided; a using effect of the regenerated active white clay is basically the same as the using effect at the first time; and the active white clay waste slag can be regenerated for many times and applied to drinking water treatment so as to remove nitride, fluoride and the like from water.

The invention relates to a Z-shaped semiconductor photocatalyst with a trapezoid structure as well as a preparation method and application thereof. The Z-shaped semiconductor photocatalyst is preparedthrough a sol-gel method, a hydrothermal method and a high-temperature calcination method; a narrow band gap semiconductor is embedded between Er<3+>:Y3Al5O12@NiGa2O4 and Bi2Sn2O7 and is used as a good conductor as a conductive ladder to form the Z-shaped semiconductor photocatalyst Er<3+>:Y3Al5O12@NiGa2O4/NiS/Bi2Sn2O7 with the trapezoid structure; the composite material has highly-stable photocatalytic activity in nitrite and sulfite conversion processes; the conversion rates of nitrite and sulfite reach 86.23 percent to 94.44 percent respectively under the irradiation of simulated sunlight.The photocatalyst with the Z-shaped structure has stable and efficient photocatalytic activity and has a wide application prospect in nitrite and sulfite wastewater treatment.

The invention relates to a method for continuously preparing aniline diazonium salt and phenylhydrazine hydrochloride on the basis of a microreactor. An aniline salt and acid mixture and an nitrite aqueous solution which are prepared at a normal temperature are continuously injected into the microreactor to carry out diazotization reaction, and by the steps of reduction, acid precipitation and filtration, the phenylhydrazine hydrochloride is obtained. The method is easy to operate, the temperature of the diazotization reaction is high, the dosages of the reactants approximate the stoichiometric ratio, the time of the diazotization reaction is short, the yield is high, the aniline diazonium salt and the phenylhydrazine hydrochloride can be continuously produced, the energy consumption is reduced, the safety of the process is increased, and the method is applicable to industrial production.

The invention relates to a food detection technology and particularly relates to a preparation method and application of a modified electrode based on nanoporous platinum-cobalt oxide hybrid material.The preparation method adopts a glassy carbon electrode as a base electrode. The surface of the base electrode is modified with the nanoporous platinum-cobalt oxide hybrid material, the nanoporous platinum-cobalt oxide hybrid material, carbon powder, ethanol and a Nafion solution are mixed under ultrasonic treatment to form a uniform ink-like suspension solution, and the ink-like suspension solution is added onto the polished surface of the glassy carbon electrode drop by drop and then is dried so that the modified electrode is obtained. The product detection process is fast, any sample labeling and probe modification are avoided, sensitivity is high and a detection limit is low. The hybrid material is a stable composition of nanoporous cobalt oxide and platinum nanoparticles, effectivelyprevents agglomeration of platinum nanoparticles, has a low platinum use amount and greatly reduces the cost of nitrite detection.

A nitrous acid salt is added at a temperature of 10 to 80° C. to an aqueous solution which contains an optically active 2-aminocarboxylic acid (4) and a protonic acid, the amount of the latter acid being 1 to 3 equivalents to the former, and which has a proton concentration of 0.5 to 2 mol/kg to conduct a reaction to thereby produce an optically active 2-hydroxycarboxylic acid (1). Thionyl chloride and a basic compound are caused to act on the compound (1) to chlorinate it and simultaneously invert the configuration in the 2-position. Thus, an optically active 2-chlorocarboxylic acid chloride (5) is induced. The compound (5) is hydrolyzed to induce an optically active 2-chlorocarboxylic acid (2). The compound (2) is reacted with a thioacetic acid salt to incorporate an acetylthio group thereinto and simultaneously invert the configuration in the 2-position to thereby produce an optically active 2-acetylthiocarboxylic acid (3).

Nitric oxide (NO) generating compositions can include a nitrite component, an acidifying component, and a support material configured to carry one of the nitrite component and the acidifying agent. In some examples, the support material can minimize NO generation prior to addition of an activating amount of a suitable solvent.

Disclosed herein are methods and materials that may be implemented to scavenge a potentially destructive free radical, peroxynitrite. Specifically exemplified are cerium based nanoparticles that react with and reduce peroxynitrite. The discoveries disclosed herein reveal several therapeutic uses of such peroxynitrite reactive particles.

The invention discloses preparation methods and application of a phosphorescent iridium compound and organic and inorganic hybridized nano-silicon spheres (MSN-ONOO). A borate group with specific response on peroxynitrite is connected to an auxiliary ligand of an iridium compound through a covalent bond; the detection of a ratio method is realized through introducing a reference compound; the organic and inorganic hybridized nano-silicon spheres are prepared; the MSN-ONOO covers two iridium compound materials (Ir1 and Ir3*), wherein the Ir1 has the specific response on the peroxynitrite and the Ir3* is used as a ratio probe and has no response on the peroxynitrite. The Ir1 phosphorescent strength is weakened along the increasing of the concentration of the peroxynitrite; the phosphorescentservice life is reduced along the increasing of the concentration of the peroxynitrite; endogenous and exogenous peroxynitrite of cells is specifically detected through co-focusing imaging; mesoporous nanoparticles are prepared so that the disadvantage that the water solubility of a common fluorescent/phosphorescent probe is poor is successfully solved.

A method for preparing synthetic polymerized resins for ion exchange, namely, carboxylic cationites, which are suitable as sorbents for preparative separation and purification of biologically active compounds by low pressure liquid chromatography (LPLC). The directional polymerization conditions enable such cationites to be prepared with polymeric structures which can be used for the separation of macromolecules, such as proteins, with high molecular mass from various microbiological raw materials and physiological liquids. Depending upon the embodiment of the method of manufacture according to the present invention, the resultant carboxylic cationites are obtained in one of three forms: a swollen block, if no pre-polymerization or dispersion stages are performed; and, if such stages are performed, depending upon the dispersion conditions, the resultant structures can be either irregular particles or spherical granules.

The invention discloses a synthetic method of rivaroxabanintermediate4-(4-nitrosobenzene)-3-morpholine. The method comprises steps as follows: (1), halogenated benzene (I) and ethanolamine react under the condition of a catalyst and alkali to generate N-ethoxylaniline (II), N-ethoxylaniline (II) and nitrous acid or nitrite react to generate 4-nitroso-N-ethoxylaniline (III), and 4-nitroso-N-ethoxylaniline (III) and chloroacetyl chloride react to generate 4-(4-nitrosobenzene)-3-morpholine (IV). According to the synthetic method of 4-(4-nitrosobenzene)-3-morpholine, required raw materials and reagents are cheap and are easy to obtain, the yield is high, and the cost is low; the reaction condition is mild; fewer three wastes are produced; and the product quality is reliable and stable, and the whole process is very suitable for industrial production.

The invention relates to a preparation method for 4-phenyl-2,7-naphthyridine-1(2H)-ketone, and belongs to the technical field of medicine synthesis. According to the preparation method for the 4-phenyl-2,7-naphthyridine-1(2H)-ketone, the problems that an existing reaction route is long and low in yield are solved. The preparation method comprises the steps that 3-amino-4-phenyl-1H-pyran-[3,4-c]pyridine-1-ketone reacts with ammonium water to obtain 3-amino-4-benzene-2,7-naphthyridine-1(2H)-ketone; on the acidic condition, a diazo-reaction takes place between the 3-amino-4-benzene-2,7-naphthyridine-1(2H)-ketone and nitrite to obtain a diazotized intermediate product, and after the reaction is completed, the temperature is increased to enable the diazotized intermediate product to be converted into the final product 4-phenyl-2,7-naphthyridine-1(2H)-ketone. The preparation method has the advantages that the raw materials are easy to obtain, the reaction requirements are low, operation is easy, only two steps of reactions are needed, the technology is simplified, and the total yield of the final obtained 4-phenyl-2,7-naphthyridine-1(2H)-ketone is higher.