WO2008007497A1 - Solutions aqueuses de sels de chrome (iii) d'acide organique et procédé de préparation desdites solutions - Google Patents
Solutions aqueuses de sels de chrome (iii) d'acide organique et procédé de préparation desdites solutions Download PDFInfo
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- WO2008007497A1 WO2008007497A1 PCT/JP2007/060107 JP2007060107W WO2008007497A1 WO 2008007497 A1 WO2008007497 A1 WO 2008007497A1 JP 2007060107 W JP2007060107 W JP 2007060107W WO 2008007497 A1 WO2008007497 A1 WO 2008007497A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/41—Preparation of salts of carboxylic acids
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C53/00—Saturated compounds having only one carboxyl group bound to an acyclic carbon atom or hydrogen
- C07C53/08—Acetic acid
- C07C53/10—Salts thereof
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C55/00—Saturated compounds having more than one carboxyl group bound to acyclic carbon atoms
- C07C55/02—Dicarboxylic acids
- C07C55/06—Oxalic acid
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C55/00—Saturated compounds having more than one carboxyl group bound to acyclic carbon atoms
- C07C55/02—Dicarboxylic acids
- C07C55/08—Malonic acid
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C55/00—Saturated compounds having more than one carboxyl group bound to acyclic carbon atoms
- C07C55/24—Saturated compounds having more than one carboxyl group bound to acyclic carbon atoms containing more than three carboxyl groups
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
- C07C59/01—Saturated compounds having only one carboxyl group and containing hydroxy or O-metal groups
- C07C59/06—Glycolic acid
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
- C07C59/01—Saturated compounds having only one carboxyl group and containing hydroxy or O-metal groups
- C07C59/08—Lactic acid
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
- C07C59/01—Saturated compounds having only one carboxyl group and containing hydroxy or O-metal groups
- C07C59/10—Polyhydroxy carboxylic acids
- C07C59/105—Polyhydroxy carboxylic acids having five or more carbon atoms, e.g. aldonic acids
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
- C07C59/235—Saturated compounds containing more than one carboxyl group
- C07C59/245—Saturated compounds containing more than one carboxyl group containing hydroxy or O-metal groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
- C07C59/235—Saturated compounds containing more than one carboxyl group
- C07C59/245—Saturated compounds containing more than one carboxyl group containing hydroxy or O-metal groups
- C07C59/265—Citric acid
Definitions
- Chromium (m) organic acid aqueous solution and method for producing the same
- the present invention relates to an organic acid chromium (in) aqueous solution and a method for producing the same.
- chromium (III) oxalate which is a kind of organic acid chromium (III)
- the following method is known (see Non-Patent Document 1).
- a sodium hydroxide solution or an aqueous ammonia solution is added to an inorganic trivalent chromium salt aqueous solution such as chromium sulfate (111), chromium nitrate (III), or salty chromium (III) to neutralize the solution.
- ⁇ Get chrome precipitation.
- This precipitate is dissolved in an oxalic acid solution.
- chromium (III) oxalate is obtained.
- the solution of chromium (III) oxalate obtained in this way dissolved in water with trace amounts of metal ions such as Na and Fe, and ions such as Cl— and SO 2 NO— due to the starting materials.
- the salt solution is characterized by a low amount of oxalic acid present in the aqueous solution.
- a chromium (III) salt aqueous solution with a small amount of oxalic acid has an advantage that an excellent gloss product can be obtained when it is used for, for example, metal surface treatment or chromate treatment.
- Patent Document 1 discloses a chromium (III) salt of various inorganic acids, but does not describe a chromium (III) salt of an organic acid! /.
- Non-Patent Document 1 The Dictionary of Chemistry 4, 14th edition, Kyoritsu Publishing Co., Ltd., September 1972 15
- Patent Document 1 International Publication No. 2005Z056478 Pamphlet
- an object of the present invention is to provide a high-purity organic acid chromium (III) aqueous solution with few impurities and a method for producing the same.
- the present invention has the general formula Cr (A x ) (wherein A represents an organic acidity and a residue excluding protons;
- the concentration of the organic acid chromium (III) in the aqueous solution is not less than 6 wt% as Cr (A x )
- the impurity ion concentration is Cr (A x ) and Na ⁇ 30ppm per 20% by weight, F mn
- the present invention provides a suitable method for producing the above-mentioned organic acid chromium (III) aqueous solution
- An organic acid chromium (III) aqueous solution manufacturing method characterized in that a mixed aqueous solution of an organic acid and an organic reducing agent and a chromic acid (VI) aqueous solution are mixed to reduce chromium (VI) to chromium (III). It is to provide.
- the organic acid chromium (I II) aqueous solution of the present invention is a liquid in which the organic acid chromium (III) represented by the general formula Cr (A x ) is dissolved in water.
- chromium refers to trivalent chromium.
- A represents a residue obtained by removing a proton from an organic acid.
- A has a negative charge.
- X represents the charge of A (negative charge).
- the organic acid in the organic acid chromium is represented by R (COOH) 2.
- R is an organic group, hydrogen y
- y represents the number of carboxyl groups in the organic acid, and is an integer of 1 or more.
- a in the above general formula is represented by R (COO—).
- the organic group is preferably an aliphatic group having 1 to 10 carbon atoms, particularly 1 to 5 carbon atoms. This aliphatic group may be substituted with another functional group such as a hydroxyl group.
- the aliphatic group either a saturated aliphatic group or an unsaturated aliphatic group can be used. Considering the reducibility of chromium (VI) in the production of the aqueous solution of organic acid chromium described later, it is preferably a saturated aliphatic group.
- the number of carboxyl groups in the organic acid may be 1 or 2 or more. So organic acids It may be a monocarboxylic acid or a polyvalent carboxylic acid. Preferably, the number of forceboxyl groups in the organic acid is 1!
- Preferred organic acids are classified into the following groups (a) to (c).
- Residual force excluding carboxyl group is a saturated aliphatic group having 1 to 5 carbon atoms, particularly 1 or 2, which may be a hydrogen atom or substituted with a hydroxyl group, and the number of carboxyl groups is 1 Is an organic acid.
- Residual force excluding carboxyl group A force that is a single bond or a double bond, or a saturated aliphatic group having 1 or 2 carbon atoms that may be substituted with a hydroxyl group, and the number of carboxyl groups is 2 Is an organic acid.
- oxalic acid maleic acid, malonic acid, malic acid, tartaric acid, succinic acid, etc.
- the concentration of the organic acid chromium in the aqueous organic acid chromium solution of the present invention is not less than 6% by mass as Cr (A x ), preferably not less than 12% by weight, more preferably not less than 20% by weight. This concentration is appropriately adjusted according to the specific application of the organic acid chromium aqueous solution.
- concentration of organic acid chrome in the aqueous solution is less than 6% by weight, the concentration of each component in the bath cannot be maintained properly when used as a replenisher for a metal surface treatment or chromate treatment bath described later, for example. Problems arise.
- There is no particular upper limit on the concentration of organic acid chromium in the aqueous solution but precipitation may occur if the concentration is too high.
- the viscosity of the aqueous solution becomes high, and it may become difficult to handle due to the formation of tar.
- the upper limit is set individually according to the type of organic acid chromium. For example, when the organic acid chromium is chromium oxalate, the upper limit is preferably 50% by weight, particularly 40% by weight.
- the organic acid chromium aqueous solution of the present invention is characterized by substantially not containing hexavalent chromium.
- the organic acid chromium aqueous solution of the present invention has high safety. Containing substantially hexavalent chromium, the concentration of hexavalent chromium in the organic acid chromium aqueous solution is lower than the measurement limit value of the measuring instrument. Means low.
- the concentration of hexavalent chromium in the aqueous organic acid chromium solution of the present invention is measured using, for example, an organic solvent extraction spectrophotometry, and the concentration of trivalent chromium is measured using, for example, ICP-AES.
- the organic acid chromium aqueous solution of the present invention is also characterized by the extremely low concentration of various ions as impurities. Specifically, the concentrations of metal ions such as Na and Fe and key ions such as Cl, SO and NO are extremely low. Regarding metal ions
- Te is 20 wt 0/0 conversion per Na ⁇ 30ppm as Cr (A x), Fe ⁇ 20ppm, especially mn
- the concentration of impurity ions in the aqueous organic acid chromium solution of the present invention is measured using, for example, ICP-AES. Unless otherwise specified, “%” and “ppm” in this specification are based on weight.
- the organic acid chromium aqueous solution of the present invention it is preferable that a free organic acid does not substantially exist in the liquid. If free organic acid is present in the aqueous solution, the finish may be adversely affected when the organic acid chromium aqueous solution is used for, for example, metal surface treatment or chromate treatment.
- the fact that free organic acid is substantially absent means that the chemical power represented by Cr (A x ) is within the range of the measurement error of chromium and organic acid concentration in aqueous solution.
- the oxidation product of the organic acid is not substantially present in the liquid. This is because the acid oxide progressing product may also adversely affect the finish when an organic acid chromium aqueous solution is used for, for example, metal surface treatment or chromate treatment.
- the organic acid serves as an ion source as a counter ion of chromium (III) ions and also acts as a reducing agent for chromium (VI).
- the organic acid is oxidized by chromium (VI) and finally decomposed to water and carbon dioxide, but depending on the reduction conditions of chromium (VI), In some cases, the acid oxidization may end in the middle. In such a case, an organic acid oxidation product is present in the liquid.
- the fact that the organic acid oxidation progressing substance is substantially absent means that when the ions present in the organic acid chromium aqueous solution are analyzed (for example, when analyzed by ion chromatography), This means that the concentration is lower than the measurement limit.
- the organic acid chromium aqueous solution of the present invention is suitably used for surface treatment of various metals as a solution for chromium plating. For example, it is used for final finishes for decoration and plating applied to the upper layer of nickel plating. Furthermore, the organic acid chromium aqueous solution of the present invention is also suitably used for chromate treatment such as zinc plating and tin plating. The organic acid chromium aqueous solution of the present invention is particularly preferably used as a bath replenisher in a metal surface treatment or chromate treatment with chromium plating. In metal surface treatment and chromate treatment, bath yarn formation is likely to change due to differences in the way that ions are incorporated into the film.
- Inorganic ions such as sulfate ions, nitrate ions, and salt ions, are less likely to be incorporated into the film and accumulate in the bath compared to organic ions that tend to form complexes with chromium (III). Wow.
- the concentration of inorganic ions in the bath is small relative to chromium (III)
- the inorganic chromium salt for example, chromium sulfate, chromium nitrate, salt chrome, etc.
- chromium (III) is added to the bath as a chromium source and adjusted relatively. Is easy, but adjustment is difficult in many cases.
- Organic ions that easily form a complex with the film are less likely to accumulate in the bath, so even if the organic acid chromium aqueous solution of the present invention is added to the bath as a chromium source, There is little change. As a result, it is possible to use the bath for a long time without having to renew it frequently.
- the organic acid chromium aqueous solution of the present invention is also useful as a catalyst or a raw material for producing a dielectric such as barium titanate.
- chromium may be added as a trace component.
- the organic acid chromium aqueous solution of the present invention is used as the chromium source, the organic component is removed during the firing of the dielectric, and thus there is an advantage that a target object with less impurities can be obtained.
- the production method of the present invention is characterized in that a mixed aqueous solution of an organic acid and an organic reducing agent and a chromic acid (VI) aqueous solution are mixed to reduce chromium (VI) to chromium (III). .
- the chromic acid (VI) aqueous solution as a raw material is obtained by subjecting various purification treatments to, for example, sodium chromic (VI) acid obtained by alkali oxidation roasting of chrome ore as a starting material. It is obtained by dissolving chromium oxide (VI) in water.
- the chromic (VI) acid aqueous solution obtained in this way is a chromic acid aqueous solution prepared by using sodium hydroxide or chromium carbonate obtained by adding caustic soda or soda ash to chromium sulfate, or a high-carbon aqueous solution.
- Impurities such as Fe, Na, Mg, Al, Ca, Ni, Mo, and W are extremely small compared to a chromic acid aqueous solution obtained by dissolving fugue chrome with sulfuric acid or hydrochloric acid.
- the chromium (VI) acid aqueous solution may be a solution in the reaction system, and it is also possible to use chromium trioxide (VI) during the initial reaction. However, in many cases, an aqueous solution prepared by adding and dissolving water is used.
- concentration of the chromic (VI) acid aqueous solution is not particularly limited, but it is preferably 15 to 60% by weight as a general range.
- the organic reducing agent is not particularly limited as long as it is substantially decomposed into carbon dioxide gas and water in the reduction reaction described later and substantially no organic decomposition product remains.
- monohydric alcohols such as methyl alcohol and propyl alcohol
- dihydric alcohols such as ethylene glycol and propylene glycol
- monosaccharides such as glucose, disaccharides such as maltose, and polysaccharides such as starch
- monosaccharides such as glucose
- disaccharides such as maltose
- polysaccharides such as starch
- the organic acid may also serve as an organic reducing agent.
- the organic acid that also serves as the organic reducing agent include monovalent organic acids such as lactic acid, darconic acid, and glycolic acid.
- the divalent organic acid include oxalic acid, malic acid, maleic acid, malonic acid, and tartaric acid.
- the trivalent organic acid include citrate.
- the amount of the organic reducing agent used is an amount necessary for reducing chromium (VI) to chromium (III). In this case, it is preferable to mix an organic reducing agent and an organic acid and use them in a mixed aqueous solution.
- the organic acid is reduced with chromium (VI).
- the aqueous solution of the organic acid may be added to the aqueous solution of chromic (VI) acid. It may be added to.
- the solubility of the organic acid in water is low, for example, when oxalic acid is used as the organic acid, the aqueous solution of chromic (VI) acid is used in a state where the concentration of the organic acid is increased by heating and dissolving in the reaction vessel. It is advantageous to add As a result, a high-concentration organic acid chromium aqueous solution can be obtained.
- the solubility of the organic acid in water is high, this heating / dissolution operation is not necessary, so if the organic acid is dissolved in water at room temperature and the solution is added to the aqueous chromic (VI) acid solution. Good.
- the addition of the organic acid aqueous solution to the chromic acid aqueous solution may cause the reaction solution to gel. In such a case, add an aqueous chromic acid solution to the aqueous organic acid solution.
- Reduction of chromium (VI) occurs by mixing chromium (VI) acid, an organic acid, and an organic reducing agent used as necessary. Since this reaction is an oxidation-reduction reaction, the reaction is accompanied by a significant exotherm, and the liquid temperature quickly rises to the boiling point. The reaction temperature is usually 90-110 ° C. After completion of the reaction, ripen for 30 minutes or longer, especially 1 hour or longer. The aging temperature is not particularly limited, but may be the temperature at the end of the reaction. Carbon dioxide generated by oxidation of organic acids or organic reducing agents may be released out of the system. The end of the reaction is determined by confirming that chromium (VI) is not present in the solution, ie below the analytical detection limit. If the molar ratio of chromium (III) to organic acid needs to be adjusted after ripening, add organic acid.
- a 1 L glass reaction vessel with a condenser 245.5 g of water was charged. While the inside of the container was stirred, 312.5 g of oxalic acid dihydrate was added. Next, the reaction vessel was heated to 80 ° C., and oxalic acid dihydrate was completely dissolved under reflux. As a result, a 40% aqueous oxalic acid solution was obtained.
- the oxalic acid contained in this aqueous solution is the sum of the amount necessary to produce chromium oxalate and the amount necessary to reduce chromium (VI) acid.
- Chromium (VI) was detected by organic solvent extraction and spectrophotometry.
- the chromium concentration and oxalic acid concentration of the thus obtained chromium oxalate aqueous solution were chemically analyzed, and it was confirmed that Cr (C 2 O 3) was formed.
- the analysis results are shown in Table 1 below.
- Example 1 a chromium oxalate aqueous solution was obtained in the same manner as in Example 1 except that all of the generated evaporated water was refluxed to the reaction system.
- the resulting chromium oxalate aqueous solution was chemically analyzed for chromium concentration and oxalate concentration, and it was confirmed that Cr (C 2 O 3) was formed. That much
- a 1L glass reaction vessel with a condenser was charged with 151.4 g of a 60% aqueous chromic acid solution and 30 2.9 g of water.
- the concentration of the chromic acid aqueous solution in the reaction vessel was 20%.
- a malonic acid aqueous solution in which 180.8 g of malonic acid was dissolved in 409.8 g of water was prepared.
- the concentration of the malonic acid aqueous solution was 30%.
- the malonic acid contained in this aqueous solution is the sum of the amount necessary to produce chromium malonic acid and the amount necessary to reduce chromium (VI) acid.
- a 1 L glass reaction vessel with a condenser was charged with 147. lg of a 60% aqueous chromic acid solution and 294.3 g of water. The concentration of the chromic acid aqueous solution in the reaction vessel was 20%.
- a maleic acid aqueous solution in which 181. Og of maleic acid was dissolved in 416.4 g of water was prepared. The concentration of the aqueous maleic acid solution was 30%.
- the maleic acid contained in this aqueous solution is the sum of the amount necessary to produce chromium maleate and the amount necessary to reduce chromium (VI) acid.
- the maleic acid aqueous solution was added to the chromium (VI) acid aqueous solution at a rate of about 5 mLZmin to carry out a reduction reaction of chromium (VI).
- the reaction solution rose to about 90 ° C 30 minutes after the start of the addition.
- About 210 g of water was withdrawn from the system while evaporating water was refluxed. Carbon dioxide was released out of the system.
- aging was performed for 30 minutes or more. Thereafter, a chromium maleate aqueous solution was obtained in the same manner as in Example 1.
- the chromium and maleic acid concentrations in the resulting aqueous solution of chromium maleate were analyzed by chemical analysis to confirm that Cr (C H O) was produced.
- a 1L glass reaction vessel with a condenser was charged with 134.7 g of a 60% aqueous chromic acid solution and 269.3 g of water.
- the concentration of the chromic acid aqueous solution in the reaction vessel was 20%.
- an aqueous malic acid solution in which 191.4 g of malic acid was dissolved in 440.2 g of water was prepared.
- the concentration of the malic acid aqueous solution was 30%.
- the malic acid contained in this aqueous solution is the sum of the amount necessary for producing chromium malate and the amount necessary for reducing chromium (VI) acid.
- a 1L glass reaction vessel with a condenser was charged with 138.6 g of a 60% aqueous chromic acid solution and 277.2 g of water. The concentration of chromic acid in the reaction vessel was 20%.
- an aqueous citrate solution was prepared by dissolving 204.7 g of citrate in 416. lg of water. The concentration of the aqueous citrate solution was 30%. The citrate contained in this aqueous solution is the sum of the amount necessary to produce chromium citrate and the amount necessary to reduce chromium (VI) acid.
- the aqueous solution of citrate was added to the aqueous solution of chromic (VI) acid at a rate of about 5 mLZmin to carry out a reduction reaction of chromium (VI).
- the reaction solution rose to about 90 ° C 30 minutes after the start of the addition.
- About 200 g of water was withdrawn from the system while evaporating water was refluxed. Carbon dioxide was released out of the system. Aging was performed for 30 minutes or more after the addition of the aqueous citrate solution.
- an aqueous chromium citrate solution was obtained in the same manner as in Example 1. It was confirmed that Cr (C 3 H 2 O 3) was formed by analyzing the chromium concentration and the citrate concentration of the obtained chromium citrate aqueous solution. The analysis
- a 1 L glass reaction vessel with a condenser was charged with 115.6 g of a 60% aqueous chromic acid solution and 231.2 g of water.
- the concentration of chromic acid in the reaction vessel was 20%.
- a lactic acid aqueous solution in which 227.9 g of 90% lactic acid was dissolved in 448.2 g of water was prepared.
- the concentration of the lactic acid aqueous solution was 30%.
- the lactic acid contained in this aqueous solution is the sum of the amount necessary for producing chromium lactate and the amount necessary for reducing chromium (VI) acid.
- the lactic acid aqueous solution was added to the chromium (VI) acid aqueous solution at a rate of about 5 mL Zmin to add chromium.
- a 1 L glass reaction vessel with a condenser was charged with 124. lg of a 60% aqueous chromic acid solution and 248.3 g of water. The concentration of chromic acid in the reaction vessel was 20%. Separately, an aqueous glycolic acid solution in which 283. Og of 70 o / o glycolic acid was dissolved in 377.4 g of water was prepared. The concentration of the aqueous glycolic acid solution was 30%. The glycolic acid contained in this aqueous solution is the sum of the amount necessary to produce chromium glycolate and the amount necessary to reduce chromium (VI) acid.
- the glycolic acid aqueous solution was added to the chromic (VI) acid aqueous solution at a rate of about 5 mLZmin to carry out a reduction reaction of chromium (VI).
- the reaction solution rose to about 90 ° C 30 minutes after the start of the addition.
- About 200 g of water was withdrawn from the system while evaporating water was refluxed. Carbon dioxide was released out of the system.
- aging was performed for 30 minutes or more. Thereafter, an aqueous chromium glycolate solution was obtained in the same manner as in Example 1.
- the chromium and glycolic acid concentrations in the resulting aqueous solution of chromium glycolate were analyzed by chemical analysis to produce Cr (C H O).
- a 1 L glass reaction vessel with a condenser was charged with 661. Og of 50% darconic acid.
- the darconic acid contained in this aqueous solution is the sum of the amount necessary to produce chromium darconate and the amount necessary to reduce chromic (VI) acid.
- a chromic acid aqueous solution in which 89.6 g of a 60% chromic acid aqueous solution was dissolved in 268.8 g of water was prepared. The concentration of the chromic acid aqueous solution was 15%.
- the chromium (VI) acid aqueous solution was added to the darconic acid aqueous solution at a rate of about 5 mLZmin to carry out a reduction reaction of chromium (VI).
- the reaction solution rose to about 90 ° C 30 minutes after the start of the addition.
- About 150 g of water was withdrawn from the system while evaporating water was refluxed. Carbon dioxide was released out of the system.
- aging was performed for 30 minutes or more. Thereafter, an aqueous chromium darconate solution was obtained in the same manner as in Example 1. Analysis of chromium concentration and darconic acid concentration in the obtained aqueous solution of chromium dalconate confirms that Cr (C H O) is formed.
- a 1 L glass reaction vessel with a condenser was charged with 211.6 g of tartaric acid and 312. lg of water.
- the concentration of the tartaric acid aqueous solution in the reaction vessel was 40%.
- the tartaric acid contained in this aqueous solution is the sum of the amount necessary to produce chromium tartrate and the amount necessary to reduce chromium (VI) acid.
- a chromic acid aqueous solution was prepared by dissolving 129.3 g of a 60% chromic acid aqueous solution in 387.9 g of water.
- the concentration of the chromic acid aqueous solution was 15%.
- a chromium (VI) acid aqueous solution was added to the tartaric acid aqueous solution at a rate of about 5 mLZmin to carry out a reduction reaction of chromium (VI).
- the reaction solution rose to about 90 ° C 30 minutes after the start of the addition. While evaporating water was refluxed, about 160 g of water was extracted out of the system. Carbon dioxide was released out of the system.
- aging was performed for 30 minutes or more. Thereafter, a chromium tartrate aqueous solution was obtained in the same manner as in Example 1. Chemical analysis of the chromium and tartaric acid concentrations in the obtained aqueous solution of chromium tartrate confirmed that Cr (C 3 H 2 O 3) was formed. That
- a 1L glass reaction vessel with a condenser was charged with 300.6 g of a 60% chromic acid aqueous solution and 150.3 g of water.
- the concentration of chromic acid in the reaction vessel was 40%.
- a mixed aqueous solution was prepared by dissolving 405.8 g of 80 o / o acetic acid and 41.8 g of glucose as an organic reducing agent in 161. lg of water.
- the concentrations of acetic acid and glucose in the mixed aqueous solution were 53.3% and 6.7%, respectively.
- a 1 L glass reaction vessel with a condenser was charged with 207 g of a 60% aqueous chromic acid solution and 103.5 g of water. To this, 186.3 g of 98% sulfuric acid was added and stirred sufficiently. Further, an aqueous solution prepared by dissolving 28.8 g of 97% dalcose with 119.4 g of water was added to the reaction vessel to carry out a reduction reaction. The soup was performed for 2 hours. The liquid temperature at the end of the reaction was about 110 ° C. As a result, 604 g of a chromium sulfate aqueous solution having a Cr (SO 4) concentration power of 0% was obtained. Obtained sulfuric acid
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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BRPI0714319-2A BRPI0714319A2 (pt) | 2006-07-10 | 2007-05-17 | soluÇço aquosa contendo um sal de cromo (iii) de Ácidoorgçnico, e, processo de produÇço da mesma |
EP07743542A EP2039673A1 (en) | 2006-07-10 | 2007-05-17 | Aqueous solutions of organic acid chromium(iii) salts and process for preparation thereof |
US12/304,573 US20090194001A1 (en) | 2006-07-10 | 2007-05-17 | Organic acid chromium (iii) salt aqueous solution and process of producing the same |
CN2007800259160A CN101495439B (zh) | 2006-07-10 | 2007-05-17 | 有机酸铬(ⅲ)水溶液及其制造方法 |
KR1020087029862A KR101386300B1 (ko) | 2006-07-10 | 2007-05-17 | 유기산 크롬 (iii) 수용액 및 그의 제조 방법 |
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JP2006-189817 | 2006-07-10 | ||
JP2006189817A JP4993959B2 (ja) | 2006-07-10 | 2006-07-10 | 有機酸クロム(iii)水溶液及びその製造方法 |
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WO2008007497A1 true WO2008007497A1 (fr) | 2008-01-17 |
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PCT/JP2007/060107 WO2008007497A1 (fr) | 2006-07-10 | 2007-05-17 | Solutions aqueuses de sels de chrome (iii) d'acide organique et procédé de préparation desdites solutions |
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US (1) | US20090194001A1 (ja) |
EP (1) | EP2039673A1 (ja) |
JP (1) | JP4993959B2 (ja) |
KR (1) | KR101386300B1 (ja) |
CN (1) | CN101495439B (ja) |
BR (1) | BRPI0714319A2 (ja) |
TW (1) | TW200804404A (ja) |
WO (1) | WO2008007497A1 (ja) |
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WO2010026915A1 (ja) * | 2008-09-05 | 2010-03-11 | 日本化学工業株式会社 | 炭酸クロム(iii)及びその製造方法 |
JP5518718B2 (ja) * | 2008-09-05 | 2014-06-11 | 日本化学工業株式会社 | クロム(iii)含有水溶液の製造方法 |
JP2015081222A (ja) * | 2013-10-24 | 2015-04-27 | 日本化学工業株式会社 | 炭酸クロム(iii)及びその製造方法 |
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CN101863755B (zh) * | 2009-09-24 | 2013-10-23 | 江苏大学 | 苹果酸铬配合物及其制备方法和用途 |
CN101979369A (zh) * | 2010-10-15 | 2011-02-23 | 陕西科技大学 | 一种利用甲酸还原铬酐制备甲酸铬的方法 |
CN108517043B (zh) * | 2018-04-18 | 2021-03-09 | 中国石油天然气股份有限公司 | 一种可实现成胶时间可控的聚合物凝胶交联剂 |
CN110156587A (zh) * | 2019-04-15 | 2019-08-23 | 四川尚元惠生生物科技有限公司 | 一种铬酸铬合成甲酸铬的工艺 |
CN111574356B (zh) * | 2020-05-28 | 2023-04-07 | 四川省银河化学股份有限公司 | 一种六水醋酸铬的制备方法 |
CN113717041B (zh) * | 2021-10-08 | 2023-11-28 | 山东利檀新材料科技有限公司 | 废铬催化剂制备醋酸铬的工艺 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002523391A (ja) * | 1998-08-18 | 2002-07-30 | ベイジン ジュノン アジア パシフィック ライフ サイエンティフィック リサーチ センター | クロム酸l−トレオネート、合成法及び利用 |
JP2004520265A (ja) * | 2000-08-01 | 2004-07-08 | ソシエテ ヌヴェーレ デ クゥレー ゼンシクェ | クロム(iii)有機錯体の調製法、腐食防止剤としてのその使用および防食.コーティング |
WO2005056478A1 (ja) | 2003-12-10 | 2005-06-23 | Nippon Chemical Industrial Co., Ltd. | クロム塩水溶液及びその製造方法 |
JP2005194167A (ja) * | 2003-12-10 | 2005-07-21 | Nippon Chem Ind Co Ltd | 塩化クロム水溶液及びその製造方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5368655A (en) * | 1992-10-23 | 1994-11-29 | Alchem Corp. | Process for chromating surfaces of zinc, cadmium and alloys thereof |
JP3278509B2 (ja) * | 1993-10-21 | 2002-04-30 | 日本パーカライジング株式会社 | 亜鉛含有金属めっき鋼板の難溶性クロメート皮膜形成処理方法 |
AU5885696A (en) * | 1995-06-07 | 1996-12-30 | Abbott Laboratories | Mineral powders with enhanced chromium solubility and prepar ation methods therefor |
DE19615664A1 (de) * | 1996-04-19 | 1997-10-23 | Surtec Produkte Und Systeme Fu | Chrom(VI)freie Chromatschicht sowie Verfahren zu ihrer Herstellung |
US6190464B1 (en) * | 1998-09-24 | 2001-02-20 | Nisshin Steel Co., Ltd. | Chromating solution and chromated metal sheet |
DE10055215A1 (de) * | 2000-11-07 | 2002-05-08 | Walter Hillebrand Galvanotechn | Passivierungsverfahren |
JP3332374B1 (ja) * | 2001-11-30 | 2002-10-07 | ディップソール株式会社 | 亜鉛及び亜鉛合金めっき上に六価クロムフリー防錆皮膜を形成するための処理溶液、六価クロムフリー防錆皮膜及びその形成方法。 |
US20050109426A1 (en) * | 2002-03-14 | 2005-05-26 | Dipsol Chemicals Co., Ltd. | Processing solution for forming hexavalent chromium free, black conversion film on zinc or zinc alloy plating layers, and method for forming hexavalent chromium free, black conversion film on zinc or zinc alloy plating layers |
JP3774415B2 (ja) | 2002-03-14 | 2006-05-17 | ディップソール株式会社 | 亜鉛及び亜鉛合金めっき上に黒色の六価クロムフリー化成皮膜を形成するための処理溶液及び亜鉛及び亜鉛合金めっき上に黒色の六価クロムフリー化成皮膜を形成する方法。 |
-
2006
- 2006-07-10 JP JP2006189817A patent/JP4993959B2/ja active Active
-
2007
- 2007-05-17 WO PCT/JP2007/060107 patent/WO2008007497A1/ja active Application Filing
- 2007-05-17 KR KR1020087029862A patent/KR101386300B1/ko active IP Right Grant
- 2007-05-17 US US12/304,573 patent/US20090194001A1/en not_active Abandoned
- 2007-05-17 BR BRPI0714319-2A patent/BRPI0714319A2/pt not_active IP Right Cessation
- 2007-05-17 CN CN2007800259160A patent/CN101495439B/zh active Active
- 2007-05-17 EP EP07743542A patent/EP2039673A1/en not_active Withdrawn
- 2007-05-22 TW TW096118180A patent/TW200804404A/zh unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002523391A (ja) * | 1998-08-18 | 2002-07-30 | ベイジン ジュノン アジア パシフィック ライフ サイエンティフィック リサーチ センター | クロム酸l−トレオネート、合成法及び利用 |
JP2004520265A (ja) * | 2000-08-01 | 2004-07-08 | ソシエテ ヌヴェーレ デ クゥレー ゼンシクェ | クロム(iii)有機錯体の調製法、腐食防止剤としてのその使用および防食.コーティング |
WO2005056478A1 (ja) | 2003-12-10 | 2005-06-23 | Nippon Chemical Industrial Co., Ltd. | クロム塩水溶液及びその製造方法 |
JP2005194167A (ja) * | 2003-12-10 | 2005-07-21 | Nippon Chem Ind Co Ltd | 塩化クロム水溶液及びその製造方法 |
Non-Patent Citations (1)
Title |
---|
"Encyclopaedia Chimica", vol. 4, 15 September 1972, KYORITSU SHUPPAN CO., LTD., pages: 636 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010026915A1 (ja) * | 2008-09-05 | 2010-03-11 | 日本化学工業株式会社 | 炭酸クロム(iii)及びその製造方法 |
CN102143914A (zh) * | 2008-09-05 | 2011-08-03 | 日本化学工业株式会社 | 碳酸铬(iii)及其制造方法 |
JP5518718B2 (ja) * | 2008-09-05 | 2014-06-11 | 日本化学工業株式会社 | クロム(iii)含有水溶液の製造方法 |
JP5529024B2 (ja) * | 2008-09-05 | 2014-06-25 | 日本化学工業株式会社 | 炭酸クロム(iii)及びその製造方法 |
JP2015081222A (ja) * | 2013-10-24 | 2015-04-27 | 日本化学工業株式会社 | 炭酸クロム(iii)及びその製造方法 |
Also Published As
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CN101495439A (zh) | 2009-07-29 |
BRPI0714319A2 (pt) | 2013-03-12 |
JP4993959B2 (ja) | 2012-08-08 |
KR20090038846A (ko) | 2009-04-21 |
US20090194001A1 (en) | 2009-08-06 |
TW200804404A (en) | 2008-01-16 |
EP2039673A1 (en) | 2009-03-25 |
JP2008019172A (ja) | 2008-01-31 |
CN101495439B (zh) | 2013-07-17 |
KR101386300B1 (ko) | 2014-04-17 |
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