34results about How to "High sulfonation efficiency" patented technology

The invention discloses a preparation method for an H acid monosodium salt. The preparation method comprises the following steps: (1) enabling refined naphthalene and sulfuric acid to be subjected to a sulfonation reaction in the presence of heteropolyacid with a catalyzing amount to obtain a sulfonated product; then adding sulfur trioxide to carry out a secondary sulfonation reaction; reacting completely to obtain a sulfonated material; (2) carrying out a nitration reaction on the sulfonated material and nitric acid to obtain a nitrated material; (3) enabling the nitrated material to be subjected to a hydrogenation reduction reaction in the presence of a hydrogenation catalyst to obtain an amino T acid; (4) adding methanol and sodium hydroxide into the amino T acid and heating and reacting to obtain an alkali melt; and (5) adjusting the pH (Potential of Hydrogen) value of the alkali melt to 3-6 and carrying out acidification and separation to obtain the H acid monosodium salt. According to the preparation method, a specific catalyst is added in a sulfonation step so that the reaction temperature is reduced, a reaction condition is moderate and the corrosion to equipment is reduced.

The invention provides a preparation method of barium diphenylamine sulfonate, aiming to solve the problems that existing barium diphenylamine sulfonate preparation methods are complex in processes and higher in costs, and produced barium diphenylamine sulfonate contains plenty of barium sulfate, thus reducing the sensitivity of barium diphenylamine sulfonate. The preparation method comprises the following specific steps: adding 5Kg of diphenylamine and 4-5L of concentrated sulfuric acid to a 20L conical flask; checking the sulfonation degree of a mixed solution in the 20L conical flask; adding 4-5L of water to the 20L conical flask to carry out hydrolysis reaction; pouring the mixed solution in the 20L conical flask into 50Kg of boiling water, adding 32-80Kg of 20-50% barium hydroxide hot solution while stirring the mixed solution, filtering the mixed solution after carrying out insulation and precipitation for two hours and respectively collecting filtrate and filter residues; heating the filtrate to 60-90 DEG C and adjusting the PH value of the filtrate to 6-7 with 10% of sodium carbonate solution; drying the filtrate in a vacuum drying oven. The preparation method is used in the field of chemical reagents.

The invention provides a petroleum sulfonic acid sodium salt composition, a preparation method and application thereof. The preparation method comprises taking the total weight of the mixture as 100%, 5wt%-95wt% fraction 1 with an average molecular weight of 252-312, 5wt%-95wt% fraction 2 with an average molecular weight of 313-395 and 0-50wt% % average molecular weight is that fraction 3 of 396-490 is mixed homogeneously, obtains mixture; Add diluent in mixture, obtain the product after dilution, adopt SO 3 The gas is subjected to sulfonation treatment on the diluted product to obtain a product after sulfonation treatment; wherein, the diluent includes one or a combination of alcohols with a carbon chain length of C3-C10, and the amount is the weight of the mixture 0.1%-10% of 0.1%-10%; and then use sodium hydroxide aqueous solution to neutralize the petroleum sulfonic acid in the product after sulfonation treatment until the pH value of the system is 7-10 to obtain the petroleum sulfonic acid sodium salt composition.

The invention relates to magnetic phenol formaldehyde-humic acid resin and a preparation method thereof. The preparation method for the magnetic phenol formaldehyde-humic acid resin comprises the following steps of adding a sulfonated sodium humate solution into water-soluble phenol formaldehyde resin, uniformly stirring the mixed solution, adding magnetic fluid, stirring for mixing, heating the mixed solution to 100 DEG C, performing cross-linking reaction for 30 to 90 minutes at constant temperature, activating the magnetic phenol formaldehyde-humic acid resin in a calcium acetate solution, filtering and drying. According to the magnetic phenol formaldehyde-humic acid resin and the preparation method thereof, the magnetic phenol formaldehyde-humic acid resin can be prepared, is high in Cu<2+> ion adsorption performance, and can be used for removing copper ions from wastewater; the resin adsorbed with the copper ions is easy to regenerate, and can be separated by adopting an external magnetic field.

The invention relates to a method for preparing biomass charcoal by catalyzing organic waste at a low temperature with sulfonated char. Agricultural waste is prepared into biomass charcoal at a medium-temperature oxygen limited condition, and then the biomass charcoal is sulfonated by 95%-98% fuming sulphuric acid and is blanched and freeze-dried to obtain a sulfonated char catalyst, and the sulfonating efficiency is 1.9-2.5mmol / g. The method of preparing biomass charcoal by catalyzing organic waste at a low temperature comprises the steps of uniformly mixing the sulfonated char catalyst, crushed organic waste and water in a certain ratio, and heating the mixture in a closed reactor at the temperature of 100-130 DEG C and the rotation rate of 60-100 revolutions / h for 1-2 hours, thereby obtaining the biomass charcoal by reaction. According to the invention, not only is the difficulty of processing organic waste is solved, but also charcoal making with low cost is realized, wherein the cost is only 10%-15% of that of ordinary high-temperature charcoal making, and furthermore, the biomass charcoal has large specific surface area and good adsorption performance, can be widely applied to adsorption and purification in sewage treatment and has good economic and social benefits.

The invention discloses a method for preparing micro-fibre corn stalks by a 1-butyl-3-methimidazole chloride-LiCl-DMF (dimethylformamide) system. The method comprises the following steps: crushing and drying corn stalks; performing high-shear sulphonating treatment at a certain temperature by taking a 1-butyl-3-methimidazole chloride-LiCl-DMF compound system as a solvent and adding a pyridine sulphur trioxide compound; filtering, washing and performing vacuum drying on a material which is subjected to the sulphonating treatment to obtain the micro-fibre corn stalks with high sulphonation degree. According to the method, the corn stalk fibres can be effectively swelled and free hydroxyls can be released by combining 1-butyl-3-methimidazole chloride and LiCl, so that the cohesive force of a raw material is weakened, and the sulphonating modifying efficiency of sulphur trioxide-pyridine complex is improved. By the method, the degradation of hemicellulose and lignin components of the corn stalks can be reduced remarkably; a modifying process is simple and feasible; the modified products of micro-fibres are high in yield and sulphonation degree and large in specific surface area; value-added utilization of agricultural waste is realized; moreover, a modifying liquid is easy to recycle and utilize.

The invention belongs to the technical field of cation exchange resin, and discloses cross-linked sulfonated aldehyde ketone cation exchange resin, a preparation method thereof and an application of the resin. The method includes the steps: performing aldol reaction on sulfite, ketone and aldehyde to obtain an oligomer, and adding phenol and performing heat insulation condensation reaction to prepare active polycondensation; performing heat insulation curing crosslinking reaction to obtain the cross-linked sulfonated aldehyde ketone cation exchange resin. The invention further provides cross-linked sulfonated aldehyde ketone cation exchange resin prepared by the method and application of the cross-linked sulfonated aldehyde ketone cation exchange resin to removal of hard-water calcium magnesium ions. According to the method, a sulfonating process is implemented, then a crosslinking process is implemented, the method overturns a traditional production process that a crosslinking processis implemented, then a sulfonating process is implemented, sulfonation reaction is mild, processes are simple, convenient and controllable, ketone units in the acquired exchange resin are sufficiently sulfonated, actual exchange equivalent of the resin is higher than that of 732-type polystyrene cation exchange resin, and the resin can be directly used for exchange of calcium magnesium ions in hard water and widely applied to the fields of water treatment, food, metallurgy and the like and has high application values.

The invention discloses a method for preparing micro-fibre corn stalks by a 1-butyl-3-methimidazole chloride-LiBr-DMF (dimethylformamide) system. The method comprises the following steps: crushing and drying corn stalks; performing high-shear sulphonating treatment at a certain temperature by taking a 1-butyl-3-methimidazole chloride-LiBr-DMF compound system as a solvent and adding a pyridine sulphur trioxide compound; filtering, washing and performing vacuum drying on a material which is subjected to the sulphonating treatment, so as to obtain the micro-fibre corn stalks with high sulphonation degree. According to the method, the corn stalk fibres can be effectively swelled and free hydroxyls can be released by combining 1-butyl-3-methimidazole chloride with LiBr, so that the cohesive force of a raw material is weakened, and the sulphonating modifying efficiency of sulphur trioxide-pyridine complex is improved. According to the method, the degradation of hemicellulose and lignin components of the corn stalks can be reduced remarkably; a modifying process is simple and feasible; the modified products of micro-fibres are high in yield and sulphonation degree and large in specific surface area; value-added utilization of agricultural waste is realized; moreover, a modifying liquid is easy to recycle and utilize.

The invention discloses sulfonated vinegar residues and a preparation method and application thereof, and belongs to the field of chemical industry production and pharmaceutical production. The sulfonated vinegar residues are formed by mixing vinegar residues with sulfonating agent and baking vinegar residues and sulfonating agent through a wet method, wherein the sulfonated vinegar residues have the granularity of about 170-190 meshes, the specific surface area of 2.3864-2.5417 m<2> / g and the aperture of 0.3+ / -0.04 micron, and the content of sulfo groups in each gram of sulfonated vinegar residues is 41.382-53.298 mg. By means of the wet-method baking technology, vinegar residues are efficiently sulfonated; the sulfonated vinegar residues are little in sewage discharge, low in cost, high in sulfonating efficiency and long in service life, and a sulfonated vinegar residue catalyst is high in activity.

The invention discloses a preparation method and application of a straw-modified ester ether sulfonated composite water-reducer. The water-reducer is made from crop straw hydrolyzed powder through primary oxidation-sulfonated esterification of straw lignocellulose Modification, secondary oxidation-sulfonated esterification modification and primary methylolation-etherification modification. The straw hydrolyzed powder is obtained by hydrolyzing the straw powder after primary crushing, washing, drying, finely crushing and finely crushing pretreatment of crop straw. In the present invention, the raw materials of crop straws are pulverized and hydrolyzed for pretreatment, and straw lignin and cellulose are subjected to step-by-step sulfonation modification to form sulfonate esters, and then lignocellulose etherification modification is carried out to obtain straw-based ester ethers. The sulfonated composite water reducer has improved the low water reducing rate of 10-15% of the straw-based water reducer, and the obtained water reducer can be directly used in the situation where the water reducing rate is about 25% and the retarding time is moderate , the process is continuous and compact, easy to operate, low in cost, anti-sedimentation and easy to industrialize.