摘要:
A titanium-containing silicon oxide molded catalyst satisfying all of the following conditions (1) to (4): (1) an average pore diameter is 10 Å or more, (2) 90% or more of the whole pore volume have pore diameters of 5 to 200 Å, (3) a specific pore volume is 0.2 cm3/g or more, and (4) it is obtained by using as a template a quaternary ammonium ion of the following general formula (I) or an amine of the following general formula (II), then, removing the template. [NR1R2R3R4]+ (I) (in the formula (I), R1 represents a linear or branched hydrocarbon group having 2 to 36 carbon atoms, and R2 to R4 represent an alkyl group having 1 to 6 carbon atoms.) NR5R6R7 (II) (in the formula (II), R5 represents a linear or branched hydrocarbon group having 2 to 36 carbon atoms, and R6 and R7 represent hydrogen or an alkyl group having 1 to 6 carbon atoms.).
摘要:
A titanium-containing silicon oxide catalyst satisfying all of the following conditions (1) to (4): (1): an average pore size of 10 Å or more, (2): a pore size of 90% or more of the total pore volume of 5 to 200 Å, (3): a specific pore volume of 0.2 cm3/g or more, and (4): a quarternary ammonium ion represented by the following general formula (I) is used as a template and then said template is removed by solvent extraction operation; [NR1R2R3R4]+ (I) wherein, R1 represents a linear or branched hydrocarbon chain having 2 to 36 carbon atoms, and R2 to R4 represent an alkyl group having 1 to 6 carbon atoms, a method for producing said catalyst, and a method for producing propylene oxide by reacting propylene with a hydroperoxide, except for ethylbenzene hydroperoxide, in the presence of said catalyst.
摘要:
A process for producing propylene oxide by reacting propylene with ethylbenzene hydroperoxide in the presence of a titanium-containing silicon oxide catalyst satisfying all of the following conditions (1) to (4):(1): an average pore size of 10 .ANG. or more,(2): a pore size of 90% or more of the total pore volume of 5 to 200 .ANG.,(3): a specific pore volume of 0.2 cm.sup.3 /g or more, and(4): a quarternary ammonium ion represented by the following general formula (I) is used as a template and then said template is removed by solvent extraction operation;[NR.sup.1 R.sup.2 R.sup.3 R.sup.4 ].sup.+ (I) wherein, R.sup.1 represents a linear or branched hydrocarbon chain having 2 to 36 carbon atoms, and R.sup.2 to R.sup.4 represent an alkyl group having 1 to 6 carbon atoms.
摘要翻译:一种在满足以下所有条件(1)至(4)的含钛氧化硅催化剂的存在下,使丙烯与乙苯氢过氧化物反应生产环氧丙烷的方法:(1):平均孔径为10以上 ,(2):总孔体积的孔径为5〜200的孔径,(3):比表面积体积为0.2cm 3 / g以上,(4):表示的季铵离子 通过以下通式(I)作为模板,然后通过溶剂提取操作除去所述模板; [NR1R2R3R4] +(Ⅰ)其中,R1表示碳原子数2〜36的直链或支链烃链,R2表示 R 4表示碳原子数1〜6的烷基。
摘要:
A titanium-containing silicon oxide catalyst satisfying all of the following conditions (1) to (4): (1): an average pore size of 10 Å or more, (2): a pore size of 90% or more of the total pore volume of 5 to 200 Å, (3): a specific pore volume of 0.2 cm3/g or more, and (4): a quarternary ammonium ion represented by the following general formula (I) is used as a template and then said template is removed by solvent extraction operation; [NR1R2R3R4]+ (I) wherein, R1 represents a linear or branched hydrocarbon chain having 2 to 36 carbon atoms, and R2 to R4 represent an alkyl group having 1 to 6 carbon atoms, a method for producing said catalyst, and a method for producing propylene oxide by reacting propylene with a hydroperoxide, except for ethylbenzene hydroperoxide, in the presence of said catalyst.
摘要:
A process for producing a titanium-containing silicon oxide catalyst satisfying the following conditions, which comprises the following steps: (1): an average pore diameter of 10 Å or more, (2): a pore diameter of 90% or more of the total pore volume of 5 to 200 Å, (3): a specific pore volume of 0.2 cm3/g or more, and (4): a quaternary ammonium ion represented by the following general formula (I) is used as the template and then the template is removed by solvent extraction, [NR1R2R3R4]+ (I) (wherein, R1 represents a linear or branched hydrocarbon group having 2 to 36 carbon atoms, and R2 to R4 represent an alkyl group having 1 to 6 carbon atoms); first step: a step for obtaining a solid containing a catalyst component and a template by mixing and stirring a silica source, a titanium source and a template in liquid phase, second step: a step of drying the solid obtained in the first step under a condition of a temperature of 120° C. or less, and third step: a step of removing the template by subjecting the solid dried in the second step to solvent extraction.
摘要:
A process for producing propylene oxide, which comprises steps described below, wherein the concentration of water in a solution containing isopropylbenzene hydroperoxide to be supplied to the epoxidation step is 1% by weight or less: oxidation step; a step in which isopropylbenzene is oxidized to obtain isopropylbenzene hydroperoxide, epoxidation step; a step in which isopropylbenzene hydroperoxide obtained in the oxidation step is reacted with propylene to obtain propylene oxide and cumyl alcohol, and hydrogenolysis step; a step in which cumyl alcohol obtained in the epoxidation step is subjected to hydrogenolysis to obtain isopropylbenzene, and said isopropylbenzene is recycled to the oxidation step as a raw material for the oxidation step.
摘要:
A method for producing propylene oxide by reacting propylene with ethylbenzene hydroperoxide, wherein the reaction is conducted in the presence of a catalyst comprising a titanium-containing silicon oxide and satisfying all of the following conditions (1) to (6): (1) there is at least one peak showing a interplanar spacing (d) larger than 18 Å in X-ray diffraction; (2) an average pore size is 10 Å or more; (3) a pore size of 90% or more of the total pore volume is 5 to 200 Å; (4) a specific pore volume is 0.2 cm3/g or more; (5) a quaternary ammonium ion represented by the following general formula (I) is used as a template and then said template is removed by calcination operation: [NR1R2R3R4]+ (I) wherein R1 represents a linear or branched hydrocarbon chain having 2 to 36 carbon atoms, and R2 to R4 represent an alkyl group having 1 to 6 carbon atoms; and (6) The catalyst has been subjected to silylation treatment.
摘要:
A method for recovering propylene oxide, which comprises separating propylene oxide from a liquid mixture containing propylene oxide, cumene and cumyl alcohol through distillation using a distillation column, wherein the bottom temperature of the distillation column is 190° C. or lower.
摘要:
A process for producing propylene oxide, which comprises the following steps: oxidation step: a step of obtaining cumene hydroperoxide by oxidizing cumene; epoxidation step: a step of obtaining propylene oxide and cumyl alcohol by reacting cumene hydroperoxide obtained in the oxidation step with propylene; and conversion step: a step of obtaining cumene by subjecting cumyl alcohol obtained in the epoxidation step to hydrogenation-containing reaction and recycling the cumene to the oxidation step, wherein a concentration of 1,2-epoxy-2-phenylpropane contained in the reaction mixture after the oxidation step, is 1% by weight or less.
摘要:
A method of purifying propylene oxide, which comprises subjecting the propylene oxide containing methyl formate as an impurity to extractive distillation using a hydrocarbon of 7 to 10 carbon atoms as an extractant with an extractive distillation column, adding water to the distillate from the overhead of the extractive distillation column to conduct oil-water separation, recycling the oil layer separated to the extractive distillation column, removing the aqueous layer outside the system thereby to obtain propylene oxide in which a methyl formate concentration is reduced as a bottom liquid of the extractive distillation column.