Method and device for synthesizing 2/3-cyanopyridine
A cyanopyridine and a synthesis method technology are applied in the field of synthesis of 2/3-cyanopyridine, and can solve the problems such as the safety of the reaction process needs to be improved, the selectivity of the 2-cyanopyridine is low, the reaction process is complicated and the like, and the safety is achieved. The effect of improved performance, environmental friendliness and simple process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0035] like figure 1 , Catalyst preparation: When preparing SBA-15, MgO @ SBA-15 was prepared by SBA-15 and magnesium acetate mass ratio of 8.5: 1, prepared by equivalent impregnation method for load type K 2 O catalyst. The MgO @ SBA-15 was pre-baked at 700 ° C for 1 h to remove the hydrogen bond hydroxyl group. Then will k 2 NO 3 The aqueous solution and the like are impregnated to the molecular sieve, and place all nights at room temperature. The aqueous solution after the load was dried at 110 ° C and then baked at different temperatures for 3 h. The load of K was 0.4 mmol / g to give 0.4 kmgO@sba-15 catalyst. 0.4 kmgo@sba-15 catalyst was secondary crystallization, and an anion SO was added during the preparation process. 4 2- Get 0.4k / mgo@sba-15-na 2 SO 4 .
[0036] Activation: The catalyst is loaded into the catalyst bed of the tubular reactor 4, and the tubular reactor 4 is raised to 350 ° C, and the activation of nitrogen is activated, activated for 4 h, then the tubular ...
Embodiment 2
[0039] Catalyst preparation: When SBA-15 was prepared, MgO @ SBA-15 was prepared by SBA-15 and magnesium acetate mass ratio of 9.5: 1, and the equivalent impregnation method was prepared to prepare load type K. 2 O catalyst. The MgO @ SBA-15 was pre-pasted at 500 ° C for 1 h to remove the hydrogen bond hydroxyl group. Then will k 2 CO 3 The aqueous solution and the like are impregnated to an amorphous silica gel and a molecular sieve, and the night is placed at room temperature. The aqueous solution after the load was dried at 110 ° C and then baked at different temperatures for 3 h. The load of K was 0.9 mmol / g to give 0.9 kmgO@SBA-15 catalyst. 0.9 kmgO@sba-15 catalysts were subjected to secondary crystallization, and anion SO was added during the preparation process. 4 2- Get 0.9kmgo@sba-15-na 2 SO 4 .
[0040] Activation: The above catalyst is loaded into the catalyst bed of the tubular reactor 4, and the tubular reactor 4 is raised to 350 ° C, and activate nitrogen is activ...
Embodiment 3
[0043] Catalyst preparation: When SBA-15 was prepared, MgO @ SBA-15 was prepared by SBA-15 and magnesium acetate, prepared MgO @ SBA-15, and was prepared by equivalent impregnation method. 2 O catalyst. The MgO @ SBA-15 was pre-baked at 700 ° C for 1 h to remove the hydrogen bond hydroxyl group. Then will k 2CO 3 The aqueous solution and the like are impregnated to an amorphous silica gel and a molecular sieve, and the night is placed at room temperature. The aqueous solution after the load was dried at 110 ° C and then baked at different temperatures for 3 h. The load of K is 1.5 mmol / g to obtain 1.5 kmgo@sba-15 catalyst. The 1.5kmgo@sba-15 catalyst was subjected to secondary crystallization, and an anionic CL was added during the preparation process. - Get 1.5 kmgo@sba-15-nacl.
[0044] Activation: The catalyst is loaded into the catalyst bed of the tubular reactor 4, and the tubular reactor 4 is hit by temperature to 300 ° C, and the nitrogen gas is activated, activated for 4...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More