293 results about "Potassium oxalate" patented technology

The present invention is based upon the discovery that nontitanyl oxalates can enhance the catalytic functionality of titanyl oxalate catalysts. This invention provides a novel catalytic composition containing a titanyl oxalate catalyst and a metallic oxalate catalyst enhancer and optionally containing a metallic cocatalyst such as an antimony based catalyst. A synergistic relationship has been discovered between titanyl oxalate catalyst and the catalyst enhancer. A synergistic relationship has also been discovered between the titanyl oxalate catalyst, catalyst enhancer and a metallic cocatalyst such as antimony oxide or antimony triacetate. Also provided is an improved process of producing polyester by the polycondensation of polyester forming reactants in the presence of a catalytically effective amount of a polycondensation catalyst, wherein the improvement comprises utilizing, as the polycondensation catalyst, the novel catalyst composition containing a titanyl oxalate such as lithium titanyl oxalate and a catalyst enhancer such as a nontitanyl metallic oxalate like lithium oxalate and optionally containing a metallic catalyst such as antimony oxide or antimony triacetate. The improved process produces an improved polyester having lower acetaldehyde numbers and good color. The titanyl oxalate/catalyst enhancer composition can be used as a polycondensation catalyst in combination with other catalysts to achieve synergistic catalytic activity. Preferred is a combination of lithium or potassium titanyl oxalate, Li2 or K2TiO(C2O4)2, lithium or potassium oxalate, Li2 or K2(C2O4)2 with antimony oxide or antimony triacetate or antimony trisglycoxide.

The invention discloses a preparation method of a multistage porous carbon material. The preparation method comprises the following steps: blending a carbon source with an activator, and performing two-step carbonization and after treatment to obtain the multistage porous carbon material, wherein the two-step carbonization comprises low-temperature carbonization and high-temperature carbonization, the temperature of the low-temperature carbonization is 200-400 DEG C, and the temperature for the high-temperature carbonization is 800-1200 DEG C; the carbon source is a biomass, monosaccharide, disaccharide or polysaccharide of which the cellulose content is more than 20%; and the activator is selected from ammonium oxalate, potassium oxalate, potassium hydrogen oxalate, potassium tetroxalate, sodium oxalate, sodium hydrogen oxalate, sodium tetroxalate, sodium hydrogen carbonate or potassium hydrogen carbonate. The invention provides the preparation method of the multistage porous carbon material rich in macropore, and according to the preparation method, physical expansion and chemical activation are utilized, and a carbon source is used as a raw material to match with a specific activator in order to prepare the multistage porous carbon material rich in macropore; and the raw material is low in price and easy to obtain, the method is simple and strong in sustainability and has a potential for large-scale production.

The invention discloses light blue jun porcelain and a firing method thereof. The light blue jun porcelain is sintered from a green body and a glaze on the green body surface, wherein the glaze comprises melilite, quartzite, muscovite, potassium feldspar, asbolite, zinc, tin dioxide, iron oxide, magnesium oxide, titanium dioxide, sodium hydroxide, zirconium silicate, potassium oxalate and spodumene; the sintering raw materials of the green body comprise a main material, a pore forming agent and filler; the pore forming agent comprises fine silicon carbide powder, sodium chloride and soda lime; the filler comprises fine kyanite powder, activated alumina micropowder and bone meal. Silicon carbide, sodium chloride and soda lime are mixed with the main material and serve as the pore forming agent, so that sintered porcelain green body can contain a plurality of open pores, the pores are shrunk obviously by adding the kyanite powder with volume expansion at a high temperature, small pores are formed in the porcelain and on the porcelain surface, combination with the glaze is facilitated, flow lines occur more easily in a sintering process, and the generation probability of the porcelain with the flow lines is increased.

The invention discloses a method for preparing TiO2 hollow micro-sphere material which belongs to the technical field of preparing semiconductor photocatalysis material. In the method, titanium potassium oxalate, oxyful and concentrated hydrochloric acid are used as materials, and a hydrothermal synthesis method and the oxygen released in the reaction process are used as a template to prepare the TiO2 hollow micro-sphere material. The method has the advantages of simple operation, low reaction temperature and short reaction time; besides, the method takes the oxygen generated during the reaction process as the template, and does not need to include the techniques of specially preparing the template or removing the template in the preparing process; the whole preparing process is quite simple. The specific area of the prepared material is high; and the material is applied on the aspects of sterilization and gas storage in environment protection especially.

The invention discloses a preparation method of biomass based activated carbon with high CO2 adsorption efficiency. The method includes the steps of (1) crushing cleaned and dried peanut shells, walnut shells or pecan shells to 20-40-mesh so as to obtain biomass shell powder; (2) mixing the biomass shell powder, potassium oxalate and distilled water evenly according to a certain mass ratio, and then transferring the mixture into a polytetrafluoroethylene lined reaction kettle to be subjected to a hydrothermal reaction to obtain a hydrothermal product; (3) drying the hydrothermal product, then carbonizing the dried product under an N2 atmosphere to obtain a carbonized material; and (4) washing the carbonized material with 0.1mol/L hydrochloric acid and distilled water repeatedly to be neutral, and performing drying to obtain activated carbon. According to the method provided by the invention, carbonization and activation are performed in one step, and the traditional post-activation method is replaced. The required raw materials are widely available and are low in cost, and the preparation process is simple. The prepared activated carbon with high specific surface area has excellent adsorption performance and stable recycling adsorption performance on CO2 under room temperature and atmospheric pressure.

The invention discloses an antimicrobial moldproof agent for silk fabrics, which is prepared from the following components in parts by weight: 8-12 parts of citric acid, 7-11 parts of polyoxyethylene trimethyl ammonium chloride, 6-10 parts of vinyl siloxane, 5-9 parts of chitosan quaternary ammonium salt, 4-8 parts of tetrasodium metaphosphate, 3-7 parts of tin tetrachloride, 3-7 parts of potassium oxalate, 3-7 parts of sodium alginate, 5-9 parts of phenyl salicylate and 10-14 parts of amyl acetate. The antimicrobial moldproof agent has favorable antimicrobial and moldproof effects; the finished fabric has favorable washing fastness and soft feeling; and the preparation technique is simple, is nontoxic and harmless to the human body, and can not destroy the cocoon fibers in the silk fabric.

The invention discloses a composite zinc removing agent for treating wastewater containing zinc, belonging to the field of sewage treatment in environmental protection. The composite zinc removing agent is prepared by compounding organic matters and inorganic matters, wherein the organic matters comprise one or two of sodium citrate, tricalcium citrate, sodium oxalate, potassium oxalate and hydroxyethylidene bisphosphonate, and the inorganic matters comprise two or more of sodium sulfide, magnesium sulfide, ferrous sulfate and aluminum sulfate; in terms of mass ration, the sodium citrate accounts for 20 to 80 percent, the tricalcium citrate accounts for 20 to 80 percent, the sodium oxalate accounts for 20 to 80 percent, the potassium oxalate accounts for 20 to 80 percent, the hydroxyethylidene bisphosphonate accounts for 20 to 80 percent, the sodium sulfide accounts for 10 to 40 percent, the magnesium sulfide accounts for 10 to 40 percent, the ferrous sulfate accounts for 10 to 40 percent, and the aluminum sulfate accounts for 10 to 40 percents; and the composite zinc removing agent prepared according to the proportion is added into the wastewater containing the zinc under the condition that a pH value is between 4.0 and 6.0, the wastewater is stirred for 10 to 30 minutes and is subjected to air flotation treatment, a layer of residue floating on the surface of the wastewater is finally scraped by using a scraping machine, and yielding water can be lower the national discharge standard I. The composite zinc removing agent has the characteristics of simple process flow, lower running cost, no sludge generation, high zinc removing effect and the like.

The invention relates to a method for preparing tert-butyl hydroperoxide. According to the invention, the raw materials are isobutane and di-tert-butyl peroxide, and steps of catalysis, underpressure distillation and crystallization are carried out on the raw materials according to a certain proportion under high temperature and high pressure. According to the invention, the raw materials are isobutane and the di-tert-butyl peroxide with mass ratio being 1:1-3; the high temperature and high pressure condition are 140-160 DEG C and 1.5-2.5 atmospheric pressure; a catalyst is ferric potassium oxalate; the underpressure distillation condition is 0.1-0.3 atmospheric pressure, and temperature is 30-40 DEG C; the crystallization step is characterized in that the collected liquid is dissolved by distilled water at temperature of 20-40 DEG C, then is cooled to the temperature of 1-5 DEG C, is slightly stirred, and is stood for crystallization. The process flow is short, reaction byproduct is less, environment pollution and corrosion degree on production equipment are low, and product purity is high.

The invention discloses a preparation method of a special-infiltration functional fabric surface with self-cleaning and oil-water separation functions. The preparation method comprises the following steps: dissolving titanium potassium oxalate into deionized water, slowly dropwise adding an H2O2 solution under the stirring action of a magnetic rotor, adjusting the pH value of the solution by virtue of HCl to obtain a prepared solution, transferring the prepared solution into a blue-cap reagent bottle, adding clean cotton cloth into the blue-cap reagent bottle, and preparing the cotton cloth with a nano-TiO2 surface by virtue of a one-step water bath process; soaking the cotton cloth with the nano-TiO2 surface into a fluorosilane solution, taking out the cotton cloth after reacting for a certain time, and drying so as to obtain the cotton cloth with the special-infiltration functional fabric surface with the self-cleaning and oil-water separation functions. The preparation method has the advantages that the process is simple and convenient and is easy to operate, the reaction conditions are mild, the special-infiltration functional fabric surface has durable and stable super-hydrophobic self-cleaning performance and a good oil-water separation function, and fabrics have excellent comfort levels and mechanical properties.

The invention provides a potassium glycyrrhizinate preparation method, mainly comprising the processes of dissolution, column chromatography, ion exchange and crystallization. The preparation process of the invention has good repeatability, the obtained potassium glycyrrhizinate has low cost and reliable and controllable quality, and the preparation method is suitable for industrialized production.

The invention discloses a dust-suppression and haze-reduction bituminous mixture which is a composite material and comprises mineral aggregate and dust-suppression and haze-reduction asphalt, wherein the dust-suppression and haze-reduction asphalt comprises matrix asphalt and a dust-suppression and a haze-reduction asphalt modifier; the dust-suppression and haze-reduction asphalt modifier comprises a dust-suppression component and an anti-stripping component; the dust-suppression component comprises one or more of calcium chloride, ferric chloride, aluminium chloride, calcium oxalate and potassium oxalate; the anti-stripping component comprises one or more of calcium lignosulphonate, sodium lignosulphonate and petroleum resin. The invention further discloses a preparation method of the dust-suppression and haze-reduction bituminous mixture. The preparation method comprises the following steps: preparing the dust-suppression and haze-reduction asphalt and mixing and stirring the dust-suppression and haze-reduction asphalt and mineral aggregate at certain temperature. The dust-suppression and haze-reduction bituminous mixture can absorb moisture in air and forms a water film on a road surface to increase moisture content of dust, so that the dust cannot be raised by passing vehicles easily, and the dual effects of dust-suppression and haze-reduction and water conservation are realized.

The invention discloses an S-shaped aerosol extinguishing agent and a preparation method thereof. The S-shaped aerosol extinguishing agent comprises the following components by weight: 45 to 65 parts of oxidant, 30 to 55 parts of reductant, 6 to 15 parts of property modifier, and 5 to 10 parts of adhesive, wherein the reductant comprises components such as potassium oxalate, aluminium powder, magnesium powder urea and the like. Through the adjustment of the components and the match, the reductant component and the proportion of the reductant in the extinguishing agent are changed; the reductant can have strong oxidation-reduction reaction with the oxidant by being added with potassium oxalate; meanwhile dissociated K and Sr can have frequent chain reactions with an active group H, OH and O during the burning in a moment; and the exothermic reaction among the active group H, OH and O can be consumed and inhibited, thereby playing a restraining effect on the burning reaction. Thorough the addition of potassium oxalate, magnesium, aluminium, functional additive magnesium carbonate and the like, the burning and ignition property can be improved; and the reaction temperature of the extinguishing agent can be reduced.

The invention discloses a method for constructing a surface of a fabric with ultraviolet protection and wash-resistant special wetting functions. The method comprises the following steps: dissolving titanium potassium oxalate in a mixed solution of water and diethylene glycol; uniformly stirring under the action of a magnetic rotor; filling the prepared solution in a hydrothermal reaction kettle; adding a clean fabric into the hydrothermal reaction kettle and putting the kettle in an oven for reaction for preparing a fabric with a nano-TiO2 membrane surface; soaking the fabric with the nano-TiO2 membrane surface in a silane solution to react; and then taking out the fabric to be dried to prepare the fabric having the fabric surface with ultraviolet protection and wash-resistant special wetting functions. The method has the advantages of simple process, easiness in operation, controllable reaction condition, wide application range, wide source of raw materials, low cost, no pollution, excellent anti-ultraviolet property, wash resistance, lasting and stable super-hydrophobic self-cleaning property and good oil-water separation, and the fabric is excellent in comfortableness and air permeability.

The invention discloses a neutral rust remover and relates to the technical field of metal surface rust removal. The neutral rust remover is prepared from, by weight, 130-170 parts of hydroxy ethidenediphosphonic acid, 1-3 parts of sodium chloride and/or potassium chloride, 0.4-1.6 parts of potassium oxalate 0.4-1.6 parts of formic acid, 0.4-1.6 parts of phytic acid, 1-3 parts of citric acid, 0.4-1.6 parts of ethylenediaminetetraacetic acid and 3-7 parts of organic amine ester TPP. The invention further discloses a preparation method of the neutral rust remover. By the adoption of the neutralrust remover and the preparation method, the rust removal speed under the normal temperature is high, the rust removal effect is good, and secondary rusting time is long; meanwhile the rust remover is neutral, free of damage to a base body and free of influence on strength and ductility and malleability of metal; and all the components are environmentally-friendly, free of toxin, smoke and pungent odors, free of pollution to the environment and free of harm to the human body.

The invention discloses a method for reducing iron and aluminum ions in wet phosphoric acid. The method comprises the following steps of: oxidizing wet phosphoric acid with hydrogen peroxide; and adding potassium oxalate and sodium carbonate to the oxidized wet phosphoric acid for carrying out chemical reaction treatment so as to partially removing iron and aluminum ions from the wet phosphoric acid. The method has the advantages of stable effect and simple and convenient operation for removing the iron and aluminum ions from the wet phosphoric acid, and a generated precipitate is not needed to be filtered and can be directly used as an additive for producing a compound fertilizer and added to products without influencing the quality of the compound fertilizer; meanwhile, materials used in the precipitate method has low cost, and can be obtained easily, therefore, the method has stronger competitive force and stronger advantages in industrialized production; and the iron and aluminum ions in the wet phosphoric acid purified by the method are better purified, wherein the purifying rate of iron ions can reach 20-70 percent, and the purifying rate of aluminum ions can reach 5-30 percent.

The invention discloses a g-C3N4/TiO2 (graphite-carbon nitride/titanium dioxide) nanowire assembly structure photocatalyst and a preparation method thereof. The g-C3N4/TiO2 nanowire assembly structure photocatalyst is characterized in that inorganic titanium potassium oxalate, hydrogen peroxide, urea (or melamine and dicyandiamide) and the like are used as raw materials; the urea (or melamine and dicyandiamide) is loaded onto the surface of a TiO2 precursor of a nanowire assembly structure, so as to complete the condensation pyrolysis of the TiO2 precursor and the urea (or melamine and dicyandiamide) and the loading of g-C3N4 by one step. The preparation method comprises the following steps of firstly, dissolving the titanium potassium oxalate into deionized water, adding H2O2 (hydrogen peroxide) and NaOH (sodium hydroxide) solutions, transferring the obtained mixed solution into a reaction kettle lined with polytetrafluoroethylene to perform hydrothermal reaction, centrifuging, washing, and drying; soaking by diluted hydrochloric acid, washing to neural state, and drying; adding the urea (or melamine and dicyandiamide) dissolved by hot ethanol, evaporating the ethanol, and roasting, so as to obtain the uniformly dispersed g-C3N4-modified TiO2 nanowire assembly structure photocatalyst. The preparation method has the advantages that the technology is simple, the conditions are mild, and the cost is low; the product dispersivity and stability are high, and the dispersivity of g-C3N4 is easily controlled.

The invention discloses a method for preparing lithium oxalyldifluoroborate. According to the method, first, a boracic compound reacts with potassium oxalate (rubidium or cesium) to form difluoro oxalic acid potassium borate (rubidium or cesium) through synthesis; then, a difluoro oxalic acid potassium borate (rubidium or cesium) water solution slowly flows through superacidulated cationic resin for exchange, and an appropriate amount of Li2CO3 or LiOH is added into a collected difluoro oxalic acid boric acid water solution for the neutral reaction to obtain a crude lithium oxalyldifluoroborate product; high-purify lithium oxalyldifluoroborate is obtained through recrystallization purification. The method has the advantages that operation steps are simple, preparation conditions are moderate, cost is low, ionic impurities can be effectively controlled, and the method is suitable for industrialized mass production.

The invention discloses a preparation method of CO2-adsorbing shrimp-shell-base nitrogenous activated carbon. The method comprises the following steps: (1) pulverizing cleaned and dried waste shrimp shells into 100-140 meshes, soaking in excessive 1 mol/L hydrochloric acid for 12 hours, filtering the soaked product, washing with distilled water to a neutral state, and drying to obtain the shrimp shell powder; (2) uniformly mixing the shrimp shell powder and potassium oxalate in a grinder in a certain mass ratio to obtain a mixture; (3) carbonizing the mixture in an N2 atmosphere to obtain a carbonized material; and (4) repeatedly washing the carbonized material with 1 mol/L hydrochloric acid and distilled water to a neutral state, and drying to obtain the shrimp-shell-base nitrogenous activated carbon. Carbonization and activation are completed within one step to substitute the traditional post-activation process; the required raw materials are environmentally friendly and renewable, and the preparation technique is simple; the method can implement in-situ nitrogen doping; and the prepared nitrogen-doped activated carbon has excellent adsorbability and stable cyclic regeneration adsorbability for CO2 under the conditions of room temperature and atmospheric pressure.

The invention discloses a method for preparing high-performance TiO2 nanometer photocatalysis materials in the self-cleaning photocatalysis field. Oxydol with no treatment is utilized, titanium potassium oxalate is used as material, and the adjustable TiO2 nanometer material with multiple micro-morphology and high photocatalysis performance is prepared through a simple solvent-thermal method. The invention has the characteristics of simple operation, low cost, good product photocatalysis performance, suitability for industrial production, etc.

The invention provides an application of AK sugar crystal mother liquor produced by a sulfamic acid-sulfur trioxide method, which is a sylvite preparation by using crystal mother liquor, and a method for preparing sylvite by using AK sugar crystal mother liquor. The method comprises the following steps: mixing crystal mother liquor and organic acid or inorganic acid, keeping a mixture in an acidic property, cooling, filtering, and recrystallizing to obtain sylvite. The sylvite is prepared by the AK sugar crystal mother liquor which is originally taken as waste water for discharging by using the sulfamic acid-sulfur trioxide method. The sylvite comprises inorganic salts, such as potassium sulfate; organic salts, such as potassium oxalate; even double salts, such as potassium alum. The obtained sylvite can be a product for sale, so that the production cost of AK sugar can be reduced. Simultaneously, the potassium content in waste water can be reduced and the environmental pollution caused by waste water is minimized. The invention aims at reducing the cost of AK sugar, minimizing the environmental pollution caused by waste water from the process, raising the economic, social and environmental benefits of AK sugar production process by using the sulfamic acid-sulfur trioxide method.

The invention discloses an antimicrobial antistatic agent for silk fabrics, which is prepared from the following components in parts by weight: 16-19 parts of dimethyl terephthalate, 11-14 parts of fatty alcohol polyethenoxy ether sodium sulfate, 8-12 parts of sodium tripolyphosphate, 18-22 parts of ethylene glycol, 10-12 parts of polyethyleneglycol, 5-9 parts of zinc acetate, 5-7 parts of ethoxylated straight-chain primary alcohol, 4-6 parts of potassium oxalate, 2-4 parts of amyl acetate, 5-8 parts of white soap powder and 2-5 parts of hexamethylenetetramine. The antimicrobial antistatic agent for silk fabrics has favorable antimicrobial and antistatic effects; the finished fabric has favorable washing fastness and soft feeling; and the preparation technique is simple, is nontoxic and harmless to the human body, and can not destroy the cocoon fibers in the silk fabric.