Preparation method of catalyst for synthesizing piperazine through monoethanolamine catalytic amination one-step method
A technology of ethanolamine catalyzed amines and catalysts, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as high temperature and high pressure, and achieve temperature and pressure reduction, The effect of obvious economic benefit and reduction of preparation cost
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Embodiment 1
[0016] The preparation method of the monoethanolamine-catalyzed amination one-step method for the synthesis of piperazine catalyst in this example includes the following steps: 1) Preparation of the carrier: use γ-Al 2 o 3 and θ-Al 2 o 3 The mixture is the carrier; it is made with a specific surface area of 250m 2 / g, the pore volume is 0.55cm 3 / g, a carrier of spherical particles with a particle size of 2.0 mm.
[0017] 2) Weigh Ni (NO 3 ) 2 .6H 2 O29.1g (0.1mol), Co (NO 3 ) 2 .6H 2 O17.50g (0.06mol), MO (NO 3 ) 3 .5H 2 O6.65g (0.015mol), Fe (NO 3 ) 3 .9H 2 O20.2g (0.05mol), the concentration of its element corresponding salt is: Ni is 0.22mol / L, Co is 0.13mol / L, Mo is 0.033mol / L, Fe is 0.11mol / L. Add deionized water and fully stir and dissolve in a water bath at 60±2°C to form a 450ml solution.
[0018] 3) Take 300ml of the prepared solution in step 2) and weigh 100g of γ-Al 2 o 3 and θ-Al 2 o 3 The carrier is placed therein and soaked for 6.0 hours. ...
Embodiment 2
[0021] The preparation method of the monoethanolamine-catalyzed amination one-step method for the synthesis of piperazine catalyst in this example includes the following steps: 1) Preparation of the carrier: use γ-Al 2 o 3 and θ-Al 2 o 3 The mixture is the carrier; it is made with a specific surface area of 200m 2 / g, the pore volume is 0.45cm 3 / g, a carrier of spherical particles with a particle size of 1.0mm.
[0022] 2) Weigh Ni (NO 3 ) 2 .6H 2 O58.2g (0.2mol), Co (NO 3 ) 2 .6H 2 O29.0g (0.10mol), MO (NO 3 ) 3 .5H 2 O8.86g (0.02mol), Fe (NO 3 ) 3 .9H 2 O40.4g (0.10mol), La (NO 3 ) 3 .6H 2O8.66g (0.02mol), the concentration of its element corresponding salt is: Ni is 0.44mol / L, Co is 0.22mol / L, Mo is 0.044mol / L, Fe is 0.22mol / L, La is 0.44mol / L L. Add deionized water and fully stir and dissolve in a water bath at 60±2°C to form a 450ml solution.
[0023] 3) Take 300ml of prepared solution and weigh 100g of γ-Al 2 o 3 and θ-Al 2 o 3 The carrier was...
Embodiment 3
[0026] The preparation method of the monoethanolamine-catalyzed amination one-step method for the synthesis of piperazine catalyst in this example includes the following steps: 1) Preparation of the carrier: use γ-Al 2 o 3 and θ-Al 2 o 3 The mixture is the carrier; it is made with a specific surface area of 300m 2 / g, the pore volume is 0.65cm 3 / g, a carrier of spherical particles with a particle size of 3.0mm.
[0027] 2) Weigh Ni (NO 3 ) 2 .6H 2 O58.2g (0.2mol), Co (NO 3 ) 2 .6H 2 O29.0g (0.10mol), MO (NO 3 ) 3 .5H 2 O13.30g (0.03mol), La (NO 3 ) 3 .6H 2 O4.4g (0.01mol), the concentration of the corresponding salt of its element is: Ni is 0.44mol / L, Co is 0.22mol / L, Mo is 0.066mol / L, La is 0.022mol / L. Add deionized water and fully stir and dissolve in a water bath at 60±2°C to form a 450ml solution.
[0028] 3) Take 300ml of prepared solution and weigh 100g of γ-Al 2 o 3 and θ-Al 2 o 3 The carrier was placed therein and soaked for 12.0 hours.
[0029...
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