公开(公告)号：JPH11349562A

公开(公告)日：1999-12-21

申请号：JP13021799

申请日：1999-05-11

Applicant: DEGUSSA

Inventor： HOELDERICH WOLFGANG ,  HEITMANN GEORG PHILIP ,  ARNTZ DIETRICH DR

IPC: C07D201/04 ,  B01J29/70 ,  C07D201/06

Abstract: PROBLEM TO BE SOLVED: To obtain ε-caprolactam in high yield by Beckmann rearrangement of cyclohexanoxime using [B] β-zeolite in a vapor phase within a specific temperature range. SOLUTION: This ε-caprolactam is obtained by Beckmann rearrangement of cyclohexanoxime using [B]β-zeolite as zeolite catalyst in a vapor phase at 250-450 deg.C. The [B] β-zeolite is prepared by agitating an aqueous mixture of H3 BO3 , an alkali metal hydroxide, silicon component, and advantageously microgranular, optionally precipitated silicic acid together with an amine solution, esp. tetraethylammonium hydroxide and/or bromide, under a spontaneously generated pressure, the product is then washed and dried to afford a crystal form which is then dried at

公开(公告)号：DE19821700A1

公开(公告)日：1999-11-18

申请号：DE19821700

申请日：1998-05-14

Applicant: DEGUSSA

Inventor： HOELDERICH WOLFGANG ,  HEITMANN GEORG PHILIP ,  ARNTZ DIETRICH

IPC: C07D201/04 ,  B01J29/70 ,  C07D201/06 ,  B01J29/04

Abstract: Production of iota -caprolactam (I) by the gas phase Beckmann rearrangement of cyclohexanone oxime (II) at 250-450 deg C on zeolite catalysts uses boron (B) beta -zeolite.