27 results about "Performic acid" patented technology

Peroxyformic acid compositions for removal of biofilm growth and other contaminants and impurities from industrial processing hard surfaces are disclosed. In particular, peroxyformic acid compositions may be dosed on site and / or generated in situ for the reduction and prevention of biofilms on the hard surfaces. Methods of employing the peroxyformic acid compositions for removal of biofilm growth and other impurities such as aldehydes and alcohols from industrial CO2 effluent are also disclosed which beneficially provide ambient biofilm control and break down more rapidly than other peracids, allowing for extended runs between CIP cleaning, including a reduction and / or elimination of cleaning of the scrubbers and other industrial surfaces.

The present invention provides a method for producing carbon monoxide, which includes a step of generating carbon monoxide by a decomposition reaction of a raw material of at least one of formic acid or a formic acid alkyl ester in the presence of a solid acid catalyst. The solid acid catalyst has a BET specific surface area of 590 m 2 / g or less.

The invention relates to a kit for quantitative detection of IGF-1 (Insulin-like Growth Factor-1) and a preparation and detection method thereof. The kit comprises a calibrator, a quality control product, an internal standard solution, an immune enrichment solution, a dissociation solution, a leacheate, an eluent, a mobile phase 1 and a mobile phase 2. The complete IGF-1 protein can be fully automatically detected from top to bottom, and the sample treatment efficiency is remarkably improved; wherein the matrix liquid used for preparing the kit adopts human serum without endogenous IGF-1, so that the in-vivo environment can be simulated to the greatest extent, and the detection deviation caused by different matrixes is reduced; an eluent of the kit adopts a formic acid-hydrochloric acid mixed acid-acetonitrile system, the system can provide a mild ionization environment through formic acid, and hydrochloric acid synergistically stabilizes the synergistic effect of the pH value of the solution, so that the ion inhibition effect is reduced, the response signal of IGF-1 is improved, and the signal-to-noise ratio of detection is further improved.

This invention provides a dehydrogenation catalyst that enables the production of hydrogen by dehydrogenating formic acid using a continuous process with higher efficiency than conventional methods, as well as a polymer precursor that can optimally form the catalyst and a formic acid dehydrogenation catalyst formed therefrom. [Solution] The polymer precursor has a structure represented by the following general formula (1). TIFF2026073992000060.tif50163 (A and B are independently groups comprising a 5-membered or 6-membered heterocycle or oxime structure which may have substituents, Z is a 5-membered or 6-membered aromatic ligand, M is a Group 8 noble metal element, R 1 R is a hydroxyl group, an alkenyl group or alkynyl group having 1 to 12 carbon atoms, 2 (where is a halogen atom, hydrogen atom, formic acid, or water molecule, X is an anion, and n is a natural number between 1 and 12)

This invention relates to a kit for the quantitative detection of IGF-1 and its preparation and detection method. The kit includes calibrators, quality control materials, internal standard solution, immunoenrichment solution, dissociation solution, elution solution, mobile phase 1, and mobile phase 2. This invention enables fully automated top-down detection of intact IGF-1 protein, significantly improving sample processing efficiency. The matrix solution used in the kit preparation employs human serum with endogenous IGF-1 removed, maximally mimicking the in vivo environment and reducing detection bias caused by different matrix components. The elution buffer uses a formic acid-hydrochloric acid mixed acid-acetonitrile system. This system provides a mild ionization environment through formic acid, and the synergistic effect of hydrochloric acid in stabilizing the solution pH reduces ion inhibition effects, improves the IGF-1 response signal, and thus enhances the signal-to-noise ratio of the detection.

Peroxyformic acid compositions for removal of biofilm growth and other contaminants and impurities from industrial processing hard surfaces are disclosed. In particular, peroxyformic acid compositions may be dosed on site and / or generated in situ for the reduction and prevention of biofilms on the hard surfaces. Methods of employing the peroxyformic acid compositions for removal of biofilm growth and other impurities such as aldehydes and alcohols from industrial CO2 effluent are also disclosed which beneficially provide ambient biofilm control and break down more rapidly than other peracids, allowing for extended runs between CIP cleaning, including a reduction and / or elimination of cleaning of the scrubbers and other industrial surfaces.

The system includes a reactor vessel having a reactor space bound by a reactor wall. The reactor vessel is arranged for holding a mixture of a catalyst and formic acid in the reactor space. The reactor vessel includes a mixture inflow opening for allowing the mixture to enter the reactor space and a mixture outflow opening for allowing said mixture to exit the reactor space, and a gas outflow opening for allowing hydrogen originating from the mixture to exit the reactor space. A method for hydrogen production includes: providing the formic acid and the catalyst into the reactor space; withdrawing the mixture from the reactor space; heating and / or cooling the mixture to a predetermined temperature range outside the reactor space; and introducing the heated and / or cooled mixture into the reactor space in a predetermined direction having a tangential component arranged for stirring said mixture in the reactor space.

The invention discloses preparation of a defective zirconium-based metal organic framework and application of the defective zirconium-based metal organic framework in separation and purification of cyanidin anthocyanin, and belongs to the technical field of efficient extraction, enrichment and separation of natural active molecules. The preparation method comprises the following steps: firstly, preparing a zirconium-based HP-UiO-66X material by taking zirconium tetrachloride and terephthalic acid as a metal center and an organic ligand raw material respectively under a solvothermal condition; in the synthesis process, a certain amount of benzoic acid is added as a regulator, and then the benzoic acid is etched by formic acid to form defects. The synthesized defective UiO-66X material has a hierarchical porous structure, and different groups modified by the ligand can form hydrogen bonds and other interactions on anthocyanin, so that the adsorption performance of the HP-UiO-66X material on the anthocyanin is improved.

A device and method for treating sidestream sludge with formate to achieve short-cut nitrification belongs to the field of urban sewage treatment and regeneration. The metabolic diversity of nitrite-oxidizing bacteria (NOB) is utilized to perform sidestream treatment with VFAs such as formate to achieve mainstream short-cut nitrification. The sludge is returned from the bottom of the secondary sedimentation tank to the anaerobic zone and the dosing regulating tank respectively. Formate is added to the dosing regulating tank. The PLC controller controls the COD concentration at 140-160 mg / L. The returned sludge is mixed in the dosing regulating tank and enters the front end of the aerobic zone. The reflux ratio R2 = 100%; when the nitrite accumulation rate (NAR) is higher than 60%, R2 is adjusted to 50%; when the NAR is higher than 80%, R2 is adjusted to 25%. The present invention achieves short-cut nitrification with little impact on ammonia oxidizing bacteria (AOB), does not affect the total nitrogen removal rate, and achieves sludge reduction and resource utilization; as the NAR increases, the amount of formate added is gradually reduced, and short-cut nitrification is maintained while reducing formate consumption, saving costs.

The present invention relates to a method for reducing bacterial endospores in an aqueous fiber suspension containing recycled cellulose fibers, wherein the fiber suspension has an initial endospore amount, preferably ≥10000 CFU / ml. The method comprises adjusting the pH of the fiber suspension to a pH value of ≤6.5, adjusting the oxidation-reduction potential (ORP) of the fiber suspension to an ORP value of ≥200 mV using a first oxidizing agent, and introducing an amount of performic acid as a second oxidizing agent into the fiber suspension for reducing bacterial endospores to an endospore amount of ≤1000 CFU / ml.

The invention discloses a UiO-66-X ammonia adsorption material as well as a preparation method and application thereof, and belongs to the technical field of metal organic framework materials (MOFs). By means of a formic acid-ethanol-water ternary solvent coordinated regulation strategy and a segmented temperature control method, controllable defects and surface functional groups are introduced into a UiO-66 skeleton, the adsorption capacity of the material to NH3 under 298 K / 1 bar reaches 11.1 mmol / g, and the structural integrity retention rate gt after 30 days of water immersion is achieved; and high-efficiency desorption can be realized at the temperature of 80 DEG C. The material is suitable for efficient adsorption and resource recovery of ammonia in high-humidity and high-sulfur industrial waste gas, and has remarkable economic and environment-friendly values.

A method for oxidative brightening and whitening of a mined mineral is provided. The mined mineral to be brightened may be discolored kaolin clay, such as gray clay. The inventive method comprises adding to an aqueous slurry of a mined mineral to be brightened an oxidizing solution comprising a peroxyacid, such as performic acid and recovering bleached mineral of improved brightness, color and / or improved purity compared to the mineral to be brightened.

Methods of generating performic acid by contacting aqueous oxidizing agent and aqueous formic acid source in liquid phase are disclosed. A system and apparatus for the in situ production of the performic acid chemistries is further disclosed. In particular, a continuous flow reactor is provided to generate performic acid at variable rates. Methods of employing the oxidizing biocide for various disinfection applications are also disclosed.

The application provides an expression vector combination of hydrogenase, a recombinant bacterium, an enzyme composition and application thereof, and belongs to the technical field of genetic engineering and enzyme engineering. Through the combined use of formic acid dehydrogenase, formaldehyde dehydrogenase, formaldehyde enzyme and glycerol dehydrogenase, one-carbon compounds are reduced to the value-added chemical glycerol, and the rapid regeneration and efficient supply of energy cofactor NADH are realized by the biological enzyme (hydrogenase SH) method, so that the reduction equivalent is provided for the cascade catalytic reaction. In the enzyme cascade catalytic process, formic acid and methanol have strong inhibitory effect on the enzyme, the condensation of formaldehyde catalyzed by the formaldehyde enzyme can obtain neutral dihydroxy acetone, and the reaction is irreversible, and the fixation of CO2 is effectively pulled. The method guides the construction of an efficient carbon dioxide multi-enzyme immobilization system, and provides a new method and new idea for realizing carbon dioxide fixation and biological energy synthesis.

This invention relates to the field of sealing materials technology, specifically a rubber sealing material for security lenses and its preparation process. Alkali lignin nanoparticles are prepared using alkali lignin as a raw material, and then co-assembled with graphene oxide to obtain composite graphene oxide. This composite graphene oxide is then epoxidized with epichlorohydrin, followed by grafting of a fluorinated diamine compound using an epoxy-amine reaction. Using environmentally friendly materials oleic acid and 1,6-hexanediol as raw materials, esterification is first used to obtain the plasticizer 1,6-hexanediol oleate, which is then epoxidized. Following this, an epoxy-amine reaction is used to graft a fluorinated diamine compound, generating an oleic acid derivative as a plasticizer. Finally, epoxidized EPDM rubber is synthesized through in-situ epoxidation with formic acid and hydrogen peroxide as the raw material for EPDM rubber.

The invention relates to a method for improving the efficiency of preparing formic acid through CO2 electroreduction in a solid electrolyte (SSE) reactor by regulating and controlling the concentration of anode sulfuric acid. The method is characterized in that in a porous SSE reactor without a prefabricated anion exchange membrane (AEM), a sulfuric acid solution with the concentration of 0.01-0.1 M is used as an anolyte, preferably 0.05 M. According to the method, the hydrogen evolution side reaction caused by excessive migration of protons is inhibited by optimizing the anode microenvironment, and the formic acid selectivity (Faraday efficiency gt; 60%) and reducing the device voltage (the drop amplitude gt; 1.5 V). And by matching with a sandwich-structured gas diffusion electrode (GDE) and a filter paper interlayer, continuous and stable operation for 150 hours by passing through the formic acid with the concentration of 1.5 M at a time can be realized, and the electrode is suitable for efficient conversion from CO2 to formic acid in an electrochemical agricultural path.

The application discloses a preparation method of lignin sulfonate and application of the lignin sulfonate in high-temperature dyeing of polyester, and belongs to the technical field of dye dispersants. The preparation method is as follows: SBA-15 after alkali etching is immersed in a precursor solution, and is subjected to aging, drying and calcination treatment; the obtained metal-loaded SBA-15 is immersed in a 3-mercaptopropyltrimethoxysilane toluene solution, and tetraethyl orthosilicate is added to perform a reaction, so as to obtain a silanization modification catalyst; the silanization modification catalyst is oxidized through a peroxymonosulfuric acid aqueous solution, so as to obtain a Mn-Cu@SO3H / SiO2 catalyst; lignin is added into deionized water, polyformaldehyde and the Mn-Cu@SO3H / SiO2 catalyst are added to perform a reaction, and sodium sulfite is added to perform a reaction, so as to obtain the lignin sulfonate. The prepared lignin sulfonate has excellent high-temperature dispersion stability, low fiber staining and high dispersing force characteristics, and can be applied to high-temperature dyeing of polyester fabrics.

The present application provides a method for producing carbon monoxide, which includes a step of generating carbon monoxide by a decomposition reaction of a raw material of at least one of formic acid or a formic acid alkyl ester in the presence of a solid acid catalyst in which the total pore volume of pores having a pore diameter of 2 nm or less is 0.23 cm 3 / g or less.

The invention relates to a method for reducing bacterial endospores in an aqueous fibre suspension comprising recycled cellulosic fibres, wherein the fibre suspension has an original endospore amount, preferably of ≥10 000 CFU / ml. The method comprises adjusting the pH of the fibre suspension to a pH value of ≤6.5, adjusting the oxidation-reduction potential (ORP) of the fibre suspension to an ORP value of ≥200 mV with a first oxidizing agent, and introducing an amount of performic acid as a second oxidizing agent to the fibre suspension for reducing the bacterial endospores to an endospore amount of ≤1000 CFU / ml.

The invention discloses a rapid separation and recycling method of a chinlon blended fabric, and belongs to the technical field of recycling of waste blended fabrics. The rapid separation and recycling method is constructed by combining the chinlon blended fabric and various selectable HFIP-formic acid mixed solvent systems; process parameters such as the volume ratio of the HFIP to the formic acid solution, the reaction temperature, the pressure and the stirring speed are accurately regulated and controlled, and the chinlon and the cotton / viscose fibers are effectively separated through selective interaction between the HFIP-formic acid mixed solvent and the chinlon blended fabric under specific conditions. Compared with dissolution and recovery of chinlon in a single solvent, the rate and the dissolution effect of the dissolution process can be further regulated and controlled by controlling the proportion of hexafluoroisopropanol to the formic acid solution, meanwhile, the use cost of the solvent can be reduced, in addition, fiber and solvent recovery is carried out through ultrasonic treatment, suction filtration, distillation, drying and other treatment, and the production cost is reduced. Therefore, a more efficient, more environment-friendly and more economical method is provided for separation and recovery of chinlon.

Provided herein is a water treatment system arranged to feed performic acid to water in need of disinfection, and control residual levels of performic acid. The system is responsive to changes in water quality and water quantity, and enables compliance with toxicity limits of disinfectant concentrations.

The technical scheme of the invention discloses a metal anti-corrosion and anti-freezing solution and a preparation method thereof. The metal anti-corrosion and anti-freezing solution comprises the following raw materials in parts by weight: 20-40 parts of sodium formate, 5-10 parts of glycerol, 3-6 parts of polyoxyethylene 40 hydrogenated castor oil (PEG-40), 2-5 parts of sodium laurate, 8-16 parts of hexadecyl trimethyl ammonium bromide, 10-15 parts of chloromethyl palmitate, 4-10 parts of a pH regulator and 60-90 parts of ultrapure water. Through cooperation of sodium formate, glycerin, PEG-40, sodium laurate, cetyltrimethylammonium bromide, chloromethyl hexadecanoate and the like, the freezing point of the anti-freezing solution is effectively reduced, and the anti-freezing solution is not liable to volatilize, is suitable for open scenes such as an open heat source tower system and the like, and effectively improves the corrosion resistance of metal.

Peroxyformic acid compositions for removal of biofilm growth and other contaminants and impurities from industrial processing hard surfaces are disclosed. In particular, peroxyformic acid compositions may be dosed on site and / or generated in situ for the reduction and prevention of biofilms on the hard surfaces. Methods of employing the peroxyformic acid compositions for removal of biofilm growth and other impurities such as aldehydes and alcohols from industrial CO2 effluent are also disclosed which beneficially provide ambient biofilm control and break down more rapidly than other peracids, allowing for extended runs between CIP cleaning, including a reduction and / or elimination of cleaning of the scrubbers and other industrial surfaces.

There are provided methods of treating edible matter comprising applying a composition comprising performic acid to the edible matter or a substrate therefor. Other embodiments are also disclosed.

This invention discloses a method for preparing raw bamboo fiber based on a performic acid / sodium sulfite composite system. The raw bamboo is treated with a performic acid and sodium sulfite composite system, achieving a lignin removal rate of 97-100% while minimizing damage to the bamboo fiber. The fiber strength after this treatment is significantly increased, making it suitable for textiles and other fields. The product of this invention combines the high-quality qualities of crude bamboo obtained through alkali treatment and redox principles, yielding spinnable raw bamboo monofilaments with a diameter of several hundred micrometers, high degree of delignification, good whiteness, and excellent strength.

There are provided methods of treating edible matter comprising applying a composition comprising performic acid to the edible matter or a substrate therefor. Other embodiments are also disclosed.

The invention discloses a method for analyzing diazonium salt impurities in an eltrombopag ethanolamine bulk drug, which is characterized in that the balance between the solubility of eltrombopag ethanolamine and the stability of the diazonium salt impurities is realized through a 0.1% formic acid-acetonitrile (1: 1) solvent system, octadecylsilane chemically bonded silica is used as a filler, a mobile phase A is a 0.2% formic acid solution, and a mobile phase B is a mobile phase C; the mobile phase B is a 0.2% formic acid acetonitrile solution. Experiments show that the analysis method is strong in specificity, high in sensitivity and good in accuracy, and provides reliable guarantee for quality control of bulk drugs.