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    • 2. 发明授权
    • Process for separation of naphthoquinone and phthalic acid
    • 分离萘醌和邻苯二甲酸的方法
    • US4202828A
    • 1980-05-13
    • US868349
    • 1978-01-10
    • Ryo MatsuuraTatsuyoshi KomatsuYukio NomiyamaKenji Usui
    • Ryo MatsuuraTatsuyoshi KomatsuYukio NomiyamaKenji Usui
    • C07C46/04C07C46/10C07C51/487C07C45/24C07C49/66C07C51/48C07C63/16
    • C07C46/10C07C46/04C07C51/487
    • In a process for separation of naphthoquinone and phthalic acid from an aqueous slurry prepared by contacting a reaction mixture gas formed by a catalytic vapor phase oxidation of naphthalene with an aqueous medium, the decomposition of naphthoquinone is prevented and phthalic acid is substantially separated by adding a base to the aqueous slurry so as to neutralize only sulfuric acid component and maleic acid component without substantially neutralizing phthalic acid component and heating the aqueous slurry to dissolve phthalic acid to form a slurry of naphthoquinone in an aqueous solution of phthalic acid and extracting naphthoquinone with a solvent while preventing a crystallization of phthalic acid.A pH of the aqueous slurry is adjusted in a range of 1.2 to 2.5 before the heat dissolution of phthalic acid and the extraction of naphthoquinone.An aqueous phase obtained after the extraction of naphthoquinone is cooled to crystallize phthalic acid and then the filtrate separating from the resulting slurry is used as an aqueous medium for contacting with the reaction mixture gas, optionally after adjusting pH in a range of 1.2 to 2.5.
    • 在通过将通过萘的催化气相氧化形成的反应混合物气体与水性介质接触而制备的水性浆液分离萘醌和邻苯二甲酸的方法中,萘醌的分解被防止,邻苯二甲酸通过加入 以仅中和硫酸成分和马来酸成分,而基本不中和邻苯二甲酸成分,加热含水浆料溶解邻苯二甲酸,形成萘醌在邻苯二甲酸水溶液中的浆液,并用萘磺酸提取萘醌 溶剂,同时防止邻苯二甲酸的结晶。 在邻苯二甲酸的热溶解和萘醌的萃取之前,将水性浆液的pH调节在1.2〜2.5的范围内。 冷却萃取萘醌后得到的水相,使邻苯二甲酸结晶,然后将所得浆液分离出的滤液用作与反应混合物气体接触的水性介质,任选在将pH调节在1.2〜2.5的范围内后,
    • 5. 发明授权
    • Method for electrolyzing cerous sulfate
    • 电解硫酸铈的方法
    • US4530745A
    • 1985-07-23
    • US620095
    • 1984-06-13
    • Tatsuyoshi KomatsuShigeaki NumataKatsuhiko HiokiToshihiko Sumino
    • Tatsuyoshi KomatsuShigeaki NumataKatsuhiko HiokiToshihiko Sumino
    • C07C45/28C07C46/04C25B1/00
    • C07C45/28C07C46/04C25B1/00
    • A method for electrolyzing cerous sulfate in the electrolytic oxidation of cerous sulfate to ceric sulfate in an aqueous sulfuric acid solution, characterized in that the concentration of the cerous sulfate in the electrolyte to be supplied to the electrolytic cell is maintained, by the presence of ceric sulfate, at a level of at least the saturated concentration of cerous sulfate in the aqueous sulfuric acid solution (exclusive of the cerous sulfate and ceric sulfate) at the initial sulfuric acid concentration and at the temperature of electrolysis, and at most the saturated concentration of cerous sulfate in the presence of the ceric sulfate in the aqueous sulfuric acid solution at the initial sulfuric acid concentration and at the temperature of electrolysis, and the concentration of the ceric sulfate in the electrolyte is maintained at a level of at most the saturated concentration of ceric sulfate in the aqueous sulfuric acid solution at the initial sulfuric acid concentration and at the temperature of electrolysis.
    • 在硫酸水溶液中将硫酸铈电解氧化成硫酸铈的硫酸铈电解方法,其特征在于,通过存在铈离子保持供给到电解槽的电解质中的硫酸铈浓度 硫酸盐,在初始硫酸浓度和电解温度下,至少在硫酸水溶液(不包括硫酸铈和硫酸铈)中的硫酸铈饱和浓度至少达到饱和浓度 硫酸铈在硫酸水溶液存在下,在初始硫酸浓度和电解温度下,电解液中硫酸铈的浓度保持在最高饱和浓度 硫酸铈在硫酸水溶液中的初始硫酸浓度和 在电解温度下。
    • 6. 发明授权
    • Oxidizing an organic compound
    • 氧化有机化合物
    • US4632782A
    • 1986-12-30
    • US603790
    • 1984-04-25
    • Tatsuyoshi KomatsuShigeaki NumataKatsuhiko HiokiToshihiko Sumino
    • Tatsuyoshi KomatsuShigeaki NumataKatsuhiko HiokiToshihiko Sumino
    • C07C50/12C07B31/00C07B33/00C07B41/06C07C45/00C07C45/28C07C45/29C07C46/04C07C50/08C07C67/00
    • C07C46/04C07C50/12
    • A process for oxidizing an organic compound by ceric sulfate dissolved in an aqueous sulfuric acid solution, wherein the organic compound is oxidized (1) by means of a ceric sulfate-aqueous sulfuric acid solution or a cerous sulfate-containing ceric sulfate-aqueous sulfuric acid solution in which the molar concentration (mol/liter) of ceric sulfate is at least the molar concentration of cerium (ions) contained in the molecules of cerous sulfate at the maximum solubility of cerous sulfate in an aqueous sulfuric acid solution at the final sulfuric acid concentration (exclusive of ceric sulfate and cerous sulfate) and at the temperature under the oxidation reaction conditions and at most the saturated molar concentration of ceric sulfate in said aqueous sulfuric acid solution, (2) under a condition such that at the end of the oxidation reaction, the concentration of ceric sulfate is maintained at a level capable of dissolving cerous sulfate which is present at a concentration of at least the maximum solubility of cerous sulfate in said aqueous sulfuric acid solution.
    • 溶解在硫酸水溶液中的硫酸铈氧化有机化合物的方法,其中有机化合物通过硫酸铈 - 硫酸水溶液或含硫酸铈的硫酸铈 - 硫酸水溶液氧化(1) 其中硫酸铈的摩尔浓度(mol / l)至少为硫酸铈分子中硫酸铈分子的最大溶解度在最终硫酸的硫酸水溶液中的摩尔浓度(摩尔/升) 浓度(不包括硫酸铈和硫酸铈),并且在氧化反应条件下的温度和至多在所述硫酸水溶液中的硫酸铈的饱和摩尔浓度,(2)在氧化结束的条件下 反应中,将硫酸铈的浓度维持在能够溶解至少浓度的硫酸铈的水平 硫酸铈在所述硫酸水溶液中的最大溶解度。