119 results about "Acetate ion" patented technology

The invention relates to a 3,5-di(2-pyridyl)-4-(4-pyridyl)-1,2,4-triazolyl-silver (I) coordination polymer, and a preparation and application thereof. The compound is synthesized by the following steps: under normal temperature and pressure, mixing AgNO2 acetonitrile solution and ligand L chloroform solution, and keeping stirring for half an hour, and standing in a dark place to volatilize for about one week, thereby obtaining the colorless lumpy monocrystal product. The invention has the advantages of simple preparation technique, short reaction time, easy after-treatment and high yield. The experiment proves that nitrite ions in the material can selectively react with tetrafluoroborate ions, hexafluorosilicate ions, nitrate ions and perchlorate in an anion exchange mode, and benzoate ions and acetate ions can not perform similar anion exchange reaction. The material overcomes the limitation to the existing anion exchange material, the exchange process is simple and easy to implement, and thus, the invention is hopeful to practical application in the field of ion exchange materials.

In a polishing composition, the concentration of one of either sodium ions or acetate ions is 10 ppb or less, or the concentrations of sodium ions and acetate ions are 10 ppb or less. The polishing composition preferably contains a water soluble polymer such as hydroxyethylcellulose, an alkali such as ammonia, and abrasive grains such as colloidal silica. The polishing composition is mainly used in polishing of the surfaces of semiconductor wafers such as silicon wafers, especially used in finish polishing of the surfaces of such wafers.

The invention provides an anion receptor based on nitrophenylhydrazone and phenolic hydroxyl groups. The anion receptor is prepared by the following steps: 2, 6-diformyl-4-irgasan and paranitrophenylhydrazine are added into a reactor according to the quantity ratio of between 1 to 2 and 1 to 2.5, paratoluenesulfonic acid which accounts for 0.001 to 0.01 percent of the total mass of reactants is added as a catalyst, absolute ethyl alcohol which is 20 to 40 times of the total mass of the reactants is added as a solvent, and the reflux is performed for 3 to 6 hours at a temperature of between 70 and 100 DEG C to generate an orange precipitate; and the mixture is cooled to room temperature, and then the precipitate is filtered, is scrubbed by the absolute ethyl alcohol, and is recrystallized by DMSO to obtain the anion receptor. The anion receptor has the colorimetric identification ability to fluoride ions, acetates and dihydrogen phosphates in a DMSO solution, and has the selective colorimetric detection ability to acetate ions in DMSO/H2O solution. Anion detection test paper prepared by absorbing the anion receptor on the pretreated filter paper and drying the filter paper is used for colorimetric detection of the fluoride ions, the acetates and the dihydrogen phosphates, and has the characteristics of convenience for carrying, convenient use, high detection sensitivity and so on.

A calcium-containing hydrocarbonaceous material is treated with an aqueous mixture, comprising acetate ion and an alkaline material and having a pH in the range of 3.0 to 5.0, in order to extract at least a portion of the calcium from the hydrocarbonaceous material into the aqueous phase. Acetic acid is a suitable source of acetate ion. Ammonium hydroxide, sodium hydroxide and potassium hydroxide are example alkaline materials.

The invention provides a preparation method of a diquaternary ammonium salt. Dimethyl carbonate and a diammonium salt are placed in a reaction kettle, and the diquaternary ammonium salt is prepared under airtight conditions at the reaction temperature of 60-280 DEG C for the reaction time of 0.5-24 h. A substituent of nitrogen in cation [CH3NR1R2(CH2)nN(CH3)R3R4]<2+> of the diquaternary ammonium salt is one or more than one of alkyl, alkenyl, alkynyl and aryl selected from R1, R2, R3 and R4, or is an organic group containing hydrocarbon and one or more than one element of oxygen, nitrogen, phosphorus, sulfur, fluorine, chlorine and bromine; and an anion of the diquaternary ammonium salt is one of sulfate ion, hydrosulfate ion, nitrate ion, phosphate ion, hydrophosphate ion, dihydrophosphate ion, fluorine, chlorine, bromine, iodine, sulfur, carbonate ion, oxalate ion, acetate ion and carboxylate ion. The invention has the advantages of simple process, short production period, high yield and low cost; the diquaternary ammonium salt containing designated anions can be further synthesized; and the product has wide application.

The invention relates to 3,4-di(2-pyridyl)-5-(4-pyridyl)-1,2,4-triazole-silver (I) coordination polymer, and preparation and application thereof. The coordination polymer is synthesized by the following steps of: mixing an acetonitrile solution of AgNO2 and a chloroform solution of ligand L at normal temperature and normal pressure, keeping stirring for half an hour, and standing and volatizing for about one week under the shading condition to obtain a colorless blocky monocrystal product. The coordination polymer is easy to prepare, reaction time is short, the aftertreatment step is simple, and the coordination polymer is high in yield. Through the experiment, nitrite ions in the material can be selectively subjected to anion exchange reaction with fluoboric acid ions, hexafluorosilicic acid ions, nitrate radical ions and perchloric acid ions, and cannot be subjected to similar anion exchange reaction with benzoic acid ions, and acetate ions. The coordination polymer overcomes the limit of the conventional anion exchange material, an exchange process is simple and easy to realize, and the coordination polymer is expected to be actually applied in the field of ion exchange materials.

The invention discloses a preparation and application of a europium base polymer with long fluorescence lifetime and capable of selective recognition of anion, and belongs to the technical field of detection. The method is as below: reacting a polymerizable neutral ligand vinyl-phen, a beat-diketone anion ligand and rare earth europium ions to obtain polymerizable europium monomers; adding the polymerizable europium monomers and N-vinyl carbazole monomers in a molar ratio of 1:10-100 into a polymer tube; adding an organic?solvent for complete dissolution; then adding a radical initiator; reacting at 60-80 DEG C for 10-72 h; and conducting reprecipitation, filtering, extraction, drying and solvent removal to obtain the europium base polymer with long fluorescence lifetime. The obtained europium base polymer with long fluorescence lifetime has fluorescence lifetime of 0.62-1.53 ms, good selectivity on fluorinions, acetate ions and dihydrogen phosphate ions and important application value in bioscience and environmental sciences.

The invention discloses a method for preparing a solvent system capable of dissolving cellulose under a room temperature condition. The solvent system is composed of ionic liquid and dimethyl sulfoxide, wherein anions in the ionic liquids are acetate ions, cations are N-R1 and N-R2 imidazole cations; in the formula, R1 is methyl or ethyl, R2 is ethyl, allyl or butyl. The method comprises the following preparation steps: mixing and fully dissolving N-methylimidazole or N-ethylimidazole and the dimethyl sulfoxide; slowly dripping bromo-hydrocarbon R2Br under an ice bath condition to react; heating to carry out a reflux reaction at a temperature of 40-70 DEG C; and adding a saturated lead acetate or silver acetate solution, stirring to react, filtering precipitate, and removing water in filtrate through a rotary evaporation method to prepare the solvent system. The method disclosed by the invention has the advantages that the preparation method is short in reaction time, free of pollution and high in synthesis efficiency and conversion rate; and the solvent system can dissolve a large amount of non-activated or non-pretreated cellulose under the room temperature condition.

The invention relates to an ion-type macromolecular adsorbent for adsorbing Pd<2+> metal ions and a preparation method of the ion-type macromolecular adsorbent, belonging to the field of environmental protection and material science. A monomer of the ion-type macromolecular adsorbent consists of divinyl benzene and unsaturated guanidine ion liquid, and anions of the ion liquid are selected from bromide ions, tetrafluoroboric acid ions, hexafluorophosphoric acid ions and acetate ions. The preparation method comprises the following steps: copolymerizing the divinyl benzene and unsaturated guanidine ion liquid monomers by virtue of free radicals, and then preparing the ion-type macromolecular adsorbent by virtue of anion exchange. The adsorbent can be used for rapidly adsorbing and separating Pd<2+> metal ions and has the advantages of high adsorption speed, high saturation adsorption volume, stable adsorption performance, simplicity in separation and the like.

The invention relates to a lithium ion battery negative electrode material additive, a lithium ion battery and a negative electrode material thereof. The additive comes from a metabolic product generated by at least one of lactic acid bacteria, yeast, photosynthetic bacteria and gram negative bacteria through metabolism, and the generated metabolic product is a compound, the tail end or branched chain of which has a phosphate ion or an acetate ion. Adding of the additive provided in the invention in a lithium ion battery negative electrode material can effectively mitigate self discharge during lithium ion battery storage and high-temperature heat due to overcharge without affecting the original electrical performance of a lithium ion battery, and can maintain good battery cycle life.

The purpose of the present invention is to provide a dialysis agent A, which is able to set the total acetate ion content in the dialysate to a low value, excellent in storage stability of glucose, able to reduce the acetic acid odor, and able to suppress the corrosion of the dialysate delivery system and the dialysis machine, as well as to provide a two pack type dialysis agent utilizing the dialysis agent A.

In the dialysis agent A used in the preparation of a bicarbonate dialysate, which is used as one part of a two pack type dialysis agent, it becomes possible to prepare a bicarbonate dialysate having the total acetate ion concentration of between 2 mEq/L or more and less than 6 mEq/L by allowing to include glucose, acetic acid and acetate salt and to satisfy the molar ratio of 1:0.5 to 2 of acetic acid and acetate salt, and include acetic acid and acetate salt in a total amount of between 2 mEq or more and less than 6 mEq in the dialysis agent A required to prepare 1 L of the bicarbonate dialysate. Moreover, according to the dialysis agent A, in addition to the excellent stability of glucose, it is possible to reduce the acetic acid odor, and furthermore possible to suppress the corrosion of the dialysate delivery system and the dialysis machine.

The invention discloses a polyamide resin composition and a preparation method thereof. The polyamide resin composition comprises the following components in parts by weight: 5-60 parts of a polyamideresin, 0.1-5 parts of a metal salt compound and 0.5-35 parts of a keto carbonyl polymer. The polyamide resin composition is selected from compounds with ketone units derived from alkene comonomer repeating units and carbon monoxide repeating units of an alternative structure; the content of ketone carbonyl of a ketone carbonyl polymer is 15-80wt%, optionally 30-80wt%, and the number-average molecular weight of the ketone carbonyl polymer is greater than or equal to 1*10<4> and small than or equal to 3*10<5>. The metal element of the metal salt compound is selected from at least one of main families I-II and secondary families I-II, and anions paired with metal ions are selected from at least one of halide ions and acetate ions. The polyamide resin composition disclosed by the invention has the advantages of excellent long-term thermal oxidation resistance, excellent long-term damp-thermal aging resistance under a relative humidity condition of 85 DEG C and 90%, low cost, and the like.

The invention discloses a fluorescence probe for detecting bisulfate and a preparation method and application of the fluorescence probe for detecting the bisulfate. The molecular formula of the probeis C52H42N4O6, and the structural formula of the probe is as shown in the following formula. The fluorescence probe I prepared by the invention is simple and convenient in synthesis, high in yield andeasy to prepare, and suitable for amplification synthesis and practical production application. The fluorescence probe can use an ultraviolet-visible method and a fluorescence method to detect bisulfite ions, is good in selectivity, fast in detection, and suitable for naked eye detection, and not interfered by anions of acetate ions, thiocyanate ions, nitrite ions, nitrate ions, hydrogensulfate ions, carbonate ions, fluoride ions, chloride ions, bromide ions, iodide ions, cysteine, homocysteine, glutathione and biological mercaptan, can be applied to the field of ion detection as a new probeand has broad application prospects.

The invention provides a supported aminoalkyl ionic liquid-metal catalyst. The supported aminoalkyl ionic liquid-metal catalyst is composed of a carrier, and an aminoalkyl alkyl ionic liquid and metalactive components which are loaded on the carrier; the carrier is activated alumina, and the metal active components are ruthenium and palladium; the cation of the aminoalkyl ionic liquid is an alkyland aminoalkyl disubstituted imidazole cation, wherein the alkyl group is a C1-C16 alkyl group, and the aminoalkyl group is an aminoethyl group or an aminopropyl group; the anion of the aminoalkyl ionic liquid is at least one of a lysine radical, a dicyanamido group, a nitrate radical, a tetrafluoroborate ion, a hexafluorophosphate ion, an acetate ion and a hydroxyl group; and the catalyst contains 0.5-5.0 wt% of the ruthenium metal, 0.5-5.0 wt% of the palladium metal and 5-20 wt% of the ionic liquid. The invention also provides an application of the supported aminoalkyl ionic liquid-metal catalyst in catalysis of a reaction for hydrogenating 2,4-toluenediamine to synthesize 1-methyl-2,4-cyclohexanediamine. The catalyst has the advantages of high selectivity and yield of the product, simple reaction system, small amount of three wastes, low energy consumption and high industrial application values.

The invention relates to a hydration synthesis method of a magnesium hydroxide slurry material with controllable dissolution rate, and belongs to the technical field of inorganic chemical material preparation. The method includes the following steps: grinding magnesite and calcining at 600-900 DEG C for 1-5 hours to obtain lightly-burned magnesium oxide powder; adding the light burned magnesium oxide powder into a hydration agent solution at the calcination temperature, wherein the weight ratio of solid to liquid is 1: 5-20, anions in the hydration agent solution are at least one of chloride ions, nitrate ions, sulfate ions, acetate ions and oxalate ions, cations in the hydration agent solution are at least one of hydrogen ions, sodium ions, magnesium ions, calcium ions, iron ions, ferrousions, aluminum ions and ammonium ions, and the concentration of the hydration agent solution is 0.5-5%; and preforming homogenization stirring, wherein the homogenization stirring speed is 800-2000 rpm. According to the method, heat treatment, chemical treatment and mechanical activation are organically combined to realize the dissolution rate regulation of the synthesized magnesium hydroxide slurry material.

To provide a polishing compound that is capable of minimizing formation of scratches on an object to be polished, such as a resin substrate or a metal wiring, and polishing at a high removal rate. To further provide a polishing method that is capable of minimizing formation of scratches on a resin substrate or a metal wiring, and improving the throughput.

The polishing compound T comprises an oxidizing agent, an electrolyte and an aqueous medium, wherein ions formed from the electrolyte comprise ammonium ions, at least one type of organic carboxylate ions selected from the group consisting of polycarboxylate ions and hydroxycarboxylate ions, and at least one type of ions selected from the group consisting of carbonate ions, hydrogencarbonate ions, sulfate ions and acetate ions.

A wiring trench 2 is formed in a resin substrate 1, then a wiring metal 3 is embedded in the wiring trench 2, and the wiring metal 3 is polished by using the above-mentioned polishing compound, whereby it is possible to minimize formation of scratches on the metal wiring 3 and to improve the throughput.

Provided is an ethylene-vinyl alcohol based copolymer resin composition which has excellent shock resistance without being combined with a resin other than an ethylene-vinyl alcohol based copolymer, and which has excellent adhesive strength, said resin composition containing an ethylene-vinyl alcohol based copolymer (A), acetic acid and/or a salt thereof (B), an aliphatic carboxylic acid (C) other than the acetic acid, and an aliphatic carboxylic acid metal salt (D) which is a metal salt of the aliphatic carboxlyic acid (C), wherein: the metal species of the alphatic carboxylic acid metal salt (C) is at least one metal selected from the d-block elements of the fourth period of the long-form periodic table; and the amount of each of the acetic acid and/or a salt thereof (B), the aliphatic carboxylic acid (C) and the aliphatic carboxylic acid metal salt (D) fulfills the following formulas (1) (2) on a weight basis. Formula (1): 0.001<=((D) content in terms of metal ions/(B) content in terms of acetic acid ions) <=1.30 Formula (2): 0.11<=((D) content in terms of metal ions/(C) content in terms of carboxylic acid ions) <=100.

The invention provides an application of a perimidine onium anion receptor in high selectivity recognition of acetate ions. According to the method, a sample requiring detection is added to a DMSO solution of a perimidine onium anion receptor, if the sample contains acetate ions, a fluorescence emission spectrum of the perimidine onium anion receptor is significantly enhanced so as to realize high selectivity recognition of the acetate ions.