![]() ![]() At the beginning of the 1990s, a “once-through” synthesis of cyclohexanone oxime was claimed by EniChem (224,299). Several commercial processes are available for this step, and they differ mainly in the manufacture of the hydroxylamine derivative. Bare, in Advances in Catalysis, 2014 4.4 Production of cyclohexanone oxime through cyclohexanone ammoximationĬyclohexanone oxime is produced by the reaction of cyclohexanone with a hydroxylamine derivative. Meanwhile, both the conversion and selectivity of this reaction were all higher than 99.5%. The catalyst in the permeation was as low as 1 mg/L. The cleaning of fouled membranes can be achieved by a sequential use of strongly basic and acidic solutions. The recovered catalysts were recycled continuously back to the reactor and reused in the next reaction. Ltd., with a processing capacity of about 350,000 t/a. A sidestream membrane reactor was developed for the cyclohexanone oxime by Jiangsu Jiuwu High-Tech Co. However, the separation of the ultrafine catalyst became another problem to solve in practical applications of this process. A novel method of catalytic direct ammoxidation of cyclohexanone with NH 3/H 2O 2 to the oxime using TS-1 as the catalyst was developed. Weihong Xing, in Comprehensive Membrane Science and Engineering (Second Edition), 2017 1.11.4.1.1 Example: Cyclohexanone oxime productionĬyclohexanone oxime is the intermediate used to produce caprolactam, of which 90% is obtained by the rearrangement of cyclohexanone oxime. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |