TAIMAMOSEIOJUSURUSHOKUBAI

摘要

1499525 Preparation of lactams BAYER AG 23 May 1975 [20 June 1974] 22654/75 Heading C2C [Also in Division B1] Lactams are formed by the molecular rearrangement of a ketoxime in a fluidized bed using a catalyst in the form of pellets prepared from a mixture consisting of 75-46À5% wt. boric acid or boron trioxide, 24À8-46À5% wt. of a carrier material and 0À2-7% wt. of a compound containing nitrogen. In the example caprolactam is produced from cyclohexanone oxime at 340-345‹ C. and 760 Torr.