Catalyst for preparing cyclohexylamine through aniline hydrogenation, preparation method and application
A technology of catalyst and cyclohexylamine, which is applied in the direction of chemical instruments and methods, physical/chemical process catalysts, amino compound preparation, etc., can solve the problems of reduced reaction effect, equipment corrosion, and CHA selectivity drop, so as to improve reaction performance and Stability, meet the needs of industrial applications, and improve the effect of catalyst selectivity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0045] 1) Preparation of 1# catalyst:
[0046] a) 12.61g Ce (NO 3 ) 3 ·6H 2 O, 4.94g Co(NO 3 ) 2 ·6H 2 O and 17.41g NaBH 4 Dissolve in 360 ml of deionized water, then add 1.83 g of melamine, and heat in a water bath to disperse in the solution. The solution was transferred to a three-necked flask, and the crystallization reaction was stirred in a water bath at 90 °C for 24 h. The obtained precipitate was washed with deionized water for several times until neutral, and then placed in a vacuum oven at 70° C. to be fully dried to obtain a catalyst precursor.
[0047] b) 0.11g Zn(NO 3 ) 2 ·6H 2 O was dissolved in 40 ml of anhydrous ethanol, the pre-ground catalyst precursor was added, and the mixture was continuously stirred for 1 h. After suction filtration, washing, and vacuum drying at 70 °C, the solid was calcined in a muffle furnace at 500 °C for 4 h to obtain the present invention. Invented 1# catalyst.
[0048] 2) Evaluation of 1# catalyst at different temperatu...
Embodiment 2
[0057] 1) Preparation of 2# catalyst:
[0058] a) 12.61g Ce (NO 3 ) 3 ·6H 2 O, 6.17g Co(NO 3 ) 2 ·6H 2 O and 15.21g NaBH 4 Dissolve in 320 ml of deionized water, then add 2.44 g of dicyandiamide, and heat in a water bath to disperse in the solution. The solution was transferred to a three-necked flask, and the crystallization reaction was stirred in a water bath at 90 °C for 24 h. The obtained precipitate was washed with deionized water for several times until neutral, and then placed in a vacuum oven at 70° C. to be fully dried to obtain a catalyst precursor.
[0059] b) 0.16g Mg(NO 3 ) 2 ·6H 2 O was dissolved in 40 ml of anhydrous ethanol, the pre-ground catalyst precursor was added, and the mixture was continuously stirred for 1 h. After suction filtration, washing, and vacuum drying at 70 °C, the solid was calcined in a muffle furnace at 500 °C for 4 h to obtain the present invention. Invented 2# catalyst.
[0060] 2) Evaluation of 2# catalyst at different temp...
Embodiment 3
[0069] 3# catalyst preparation:
[0070] a) 12.61g Ce (NO 3 ) 3 ·6H 2 O, 7.41g Co(NO 3 ) 2 ·6H 2 O and 24.75g NaBH 4 Dissolve in 520 ml of deionized water, then add 0.49 g of cyanamide, and heat it in a water bath to disperse it in the solution. The solution was transferred to a three-necked flask, and the crystallization reaction was stirred in a water bath at 90 °C for 24 h. The obtained precipitate was washed with deionized water for several times until neutral, and then placed in a vacuum oven at 70° C. to be fully dried to obtain a catalyst precursor.
[0071] b) 0.12g Ca(NO 3 ) 2 ·6H 2 O was dissolved in 40 ml of anhydrous ethanol, the pre-ground catalyst precursor was added, and the mixture was continuously stirred for 1 h. After suction filtration, washing, and vacuum drying at 70 °C, the solid was calcined in a muffle furnace at 500 °C for 4 h to obtain the present invention. Invented 3# catalyst.
[0072] 2) Evaluation of 3# catalyst at different temperat...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More