Catalyst for amination of ethanolamine to sysnthsize ethylene diamine and preparation method thereof
A technology of ethanolamine amine and catalyst, which is applied in the field of catalyst and its preparation for the amination of ethanolamine to ethylenediamine, which can solve the problems of polluted products, difficult separation, increased process operation complexity and production cost, and achieve high activity and selectivity , good mechanical strength and stability, excellent selectivity effect
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Examples
Embodiment 1
[0023] 1.1 Catalyst preparation
[0024] (1) 30.63gNi(NO 3 ) 2 , 12.45gCo(NO 3 ) 2 , 8.51gCu(NO 3 ) 2 , 11.53gCr(NO 3 ) 3 and 0.35g (NH 4 ) 3 ReO 5 respectively dissolved in deionized water to form a solution;
[0025] (2) Weigh 102.02g of small spherical Al 2 o 3 Carrier, Al 2 o 3 The specific surface area is 180m 2 / g, with a pore volume of 0.6ml / g, dried in a vacuum oven at 200°C for 2h, then mixed the dried carrier and the metal salt solution obtained in step (1) into a beaker and oscillated and impregnated in an ultrasonic wave for 2h;
[0026] (3) Filter off excess liquid to obtain a carrier that has adsorbed metal ions, dry it in a vacuum oven at 150°C for 3 hours, and then continue to impregnate it in the remaining solution;
[0027] (4) The carrier impregnated twice is calcined at 550-650° C. for 3 hours in a box-type resistance furnace to prepare the catalyst.
[0028] 1.2. Catalyst activation
[0029] The catalyst is reductively activated in a tubu...
Embodiment 2
[0040] 2.1. Catalyst preparation
[0041] (1) 35.86gNi(NO 3 ) 2 , 28.45gCo(NO 3 ) 2 , 7.09gCu(NO 3 ) 2 , 1.05gZn(NO 3 ) 2 and 0.52g (NH 4 ) 3 ReO 5 respectively dissolved in deionized water to form a solution;
[0042] (2) Weigh 99.60g TiO 2 Carrier, TiO 2 The specific surface area is 95m 2 / g, with a pore volume of 0.6ml / g, dried in a vacuum oven at 200°C for 2h, then mixed the dried carrier and the metal salt solution obtained in step (1) into a beaker and oscillated and impregnated in an ultrasonic wave for 1.5h;
[0043] (3) Filter off excess liquid, and dry the obtained metal ionophore adsorbed in a vacuum drying oven at 150° C. for 2 hours, and then continue to immerse in the remaining solution;
[0044] (4) The carrier impregnated twice is calcined at 500-600° C. for 4 hours in a box-type resistance furnace to prepare the catalyst.
[0045] 2.2. Catalyst activation and catalyst activity test The reaction process is the same as in Example 1.
[0046] The re...
Embodiment 3
[0053] 3.1 Catalyst preparation
[0054] (1) 33.24gNi(NO 3 ) 2 , 52.75gCo(NO 3 ) 2 , 13.82gCu(NO 3 ) 2 and 0.52g (NH 4 ) 3 ReO 5 respectively dissolved in deionized water to form a solution;
[0055] (2) Weigh 93.60g SiO2 2 -Al 2 o 3 Carrier, SiO 2 -Al 2 o 3 The specific surface area is 150m 2 / g, the pore volume is 0.5ml / g, dry in a vacuum oven at 200°C for 2h, then mix the dried carrier and the metal salt solution obtained in step (1) into a beaker and oscillate and impregnate in an ultrasonic wave for 3h;
[0056] (3) Filter off excess liquid to obtain a carrier that has adsorbed metal ions, dry it in a vacuum oven at 150°C for 2.5 hours, and then continue to impregnate it in the remaining solution;
[0057] (4) The carrier impregnated twice is calcined at 450-550° C. for 6 hours in a box-type resistance furnace to prepare the catalyst.
[0058] 3.2. Catalyst Activation and Catalyst Activity Test The reaction process is the same as in Example 1.
[0059] T...
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