Abstract:
Según la presente invención, se proporciona un método para producir una cetona y/o un alcohol a alto rendimiento. El método incluye las etapas de mezclar una solución de reacción de oxidación, que se obtiene oxigenando un compuesto hidrocarbonado con oxígeno molecular, y agua, y separar la solución de reacción de oxidación en una fase oleosa que incluye un hidroperóxido y una fase acuosa que incluye un ácido carboxílico; concentrar la fase acuosa para obtener una solución concentrada que incluye el ácido carboxílico y recuperar agua; retirar el ácido carboxílico del agua recuperada en la etapa de concentración; recircular el agua, de la que se ha retirado el ácido carboxílico, a la etapa de separación; y descomponer el hidroperóxido en la fase oleosa para dar una cetona y/o un alcohol.
Abstract:
De acuerdo a la primera modalidad de la presente invención, un óxido de un compuesto de hidrocarburo se puede producir con alto rendimiento y alta productividad oxidando el compuesto de hidrocarburo con el oxígeno molecular en la co-presencia de un compuesto N-hidroxi, como metil etil cetona o N-hidroxisuccinimida y un éster de fosfato, como fosfato de dibutilo; de acuerdo con otra modalidad de la presente invención, un óxido de un compuesto de hidrocarburo se puede producir con alto rendimiento utilizando un catalizador de oxidación que comprende un compuesto oxima, como metil etil cetona; según otra modalidad de la presente invención, un alcohol y/o una cetona puede producir con alto rendimiento oxidando el compuesto de hidrocarburo a una temperatura de 160°C o menos y descomponiendo el hidroperóxido resultante, por ejemplo, en una unidad que tiene una superficie interna formada por un material del cual no se genera un ion de metal de transición.
Abstract:
Procedimiento para producir oxima de ciclododecanona que comprende hacer reaccionar ciclododecanona y una disolución acuosa de una sal inorgánica de hidroxilamina en presencia de un ácido carboxílico en un sistema que consiste en una fase acuosa y una fase de disolvente hidrófobo, en el que el ácido carboxílico es al menos uno seleccionado del grupo que consiste en ácido undecanoico, ácido láurico, ácido palmítico, ácido esteárico, ácido araquídico, ácido dodecanodioico, ácido oleico, ácido linoleico y ácido linolénico, en el que el pH de la fase acuosa durante la reacción se ajusta en el intervalo de 5 a 6 añadiendo amoniaco acuoso, y el disolvente hidrófobo es un hidrocarburo aromático o alifático.
Abstract:
PROBLEM TO BE SOLVED: To provide a method of easily producing high-purity o-tolidinesulfone containing few amount of impurities such as a metallic component.SOLUTION: The method of producing high-purity o-tolidinesulfone is characterized by at least including (process 1), a process of reacting o-tolidine with fuming sulfuric acid; (process 2), a process of mixing the resulting liquid reaction mixture with water to separate the precipitated o-tolidinesulfone sulfate; (process 3), a process of treating the o-tolidinesulfone sulfate in a dissolved or suspended state in water under an alkaline condition for converting the same into o-tolidinesulfone and separating it as crude o-tolidinesulfone; and (process 4), a process of treating the crude o-tolidinesulfone in a suspended state in water under an acidic condition and subsequently adjusting the pH to purify the same.
Abstract:
This invention provides producing having an objective ketone and/or alcohol by decomposing of a hydrocarbon compound rapidly and selectively having a same number of carbon atoms as a hydrocarbon compound by decomposing a hydroperoxide in a reaction solution obtained from oxidizing the hydrocarbon compound using molecular oxygen of this invention involves, a hydroperoxide decomposition step for decomposing the hydroperoxide into the ketone and/or alcohol by contacting the reaction solution with an aqueous solution containing a carbonate of an alkaline earth metal or a carbonate of an alkali metal and a transition metal compound, a separation step for separating into an oil phase comprising the ketone and/or alcohol, and a water phase comprising the carbonate of an alkaline earth metal or carbonate of an alkali metal and the transition metal compound, a recovery step for recovering the carbonate of an alkali metal or carbonate of an alkaline earth metal and the transition metal compound by combusting the water phase, and a recycling step for recycling to the hydroperoxide decomposition step by dissolving at least the carbonate of the alkali metal or the carbonate of the alkaline earth metal among the recovered substances obtained from the recovery step in water.
Abstract:
According to the first embodiment of the present invention, an oxide of a hydrocarbon compound can be produced with high yield and high productivity by oxidizing the hydrocarbon compound with molecular oxygen in the co-presence of an N-hydroxy compound, such as methyl ethyl ketone or N-hydroxysuccinimide, and a phosphate ester, such as dibutyl phosphate. According to another embodiment of the present invention, an oxide of a hydrocarbon compound can be produced with high yield by using an oxidation catalyst that comprises an oxime compound, such as methyl ethyl ketone. According to another embodiment of the present invention, an alcohol and/or a ketone can be produced with high yield by oxidizing the hydrocarbon compound at a temperature of 160°C or less, and by decomposing the resulting hydroperoxide, for example, in a unit having an inner surface formed by a material from which no transition metal ion is generated.
Abstract:
PROBLEM TO BE SOLVED: To provide a method of more safely, efficiently, and economically producing high-purity o-tolidinesulfone by reacting o-tolidine with fuming sulfuric acid.SOLUTION: The method of producing o-tolidinesulfone is characterized by at least including (process 1), a process of reacting o-tolidine with fuming sulfuric acid; (process 2), a process of mixing the resulting liquid reaction mixture with water and separating the precipitated o-tolidinesulfone sulfate; (process 3), a process of treating the o-tolidinesulfone sulfate in a dissolved or suspended state in water under an alkaline condition for converting the same into o-tolidinesulfone and separating it as crude o-tolidinesulfone; and (process 4), a process of treating the crude o-tolidinesulfone in a suspended state in water under an acidic condition and subsequently adjusting the pH to purify the same.