CN118666655A  Worldwide applications  2024 CN Shandong Chambroad Petrochemicals Co Ltd 

In the following embodiment of the invention, the adopted reactor is a micro-channel reactor, the liquid holdup of a single plate is less than or equal to 200ml/min, three plates are connected in series, the design pressure is less than or equal to 8MPa, the temperature of the three sections is controlled, the temperature of the refrigerant is 5-20 ?, and the material is 316L.
The main components of the catalyst used in the following examples of the invention are Ti-Si-Al, wherein the content of TiO 2 is 0.5-3.0 wt%, the content of SiO 2 is 40-48 wt%, the content of Al 2O3 is 40-50 wt%, and the content of P 2O5 is 0.2-1.0 wt%, and the catalyst is self-made; the preparation method comprises the following steps:
(1) Uniformly mixing a titanium silicon molecular sieve, an aluminum source, water, nitric acid and phosphoric acid according to a certain proportion;
(2) Molding the slurry;
(3) Drying the molded catalyst;
(4) And roasting the molded catalyst to obtain the catalyst. 


Example 1
Cyclopentene with 99% purity is used as raw material, and the reaction is carried out in a micro-channel reactor, the addition amount of cyclopentene is 35g, the addition amount of 50wt% hydrogen peroxide aqueous solution is 50g, the addition amount of No. 1 catalyst is 2g, the reaction temperature is 80 ?, and the pressure is 4.5MPa, so as to obtain cyclopentanone.
Experimental results show that the production method provided by the invention realizes that the once-through conversion rate of cyclopentene is more than or equal to 50%, the selectivity of cyclopentanone is more than or equal to 95%, and the purity of the obtained cyclopentanone product is more than or equal to 99.9%.