公开(公告)号：DE69230876T2

公开(公告)日：2000-08-03

申请号：DE69230876

申请日：1992-11-26

Applicant: SUMITOMO CHEMICAL CO

Inventor： ICHIHASHI HIROSHI ,  KAJIKURI HIROSHI ,  KITAMURA MASARU ,  TASAKA EIJI

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

Abstract: epsilon -Caprolactam is prepared by bringing cyclohexanone oxime into contact in gas phase with solid catalysts such as a zeolite catalyst in the presence of at least one nitrogen-containing compound selected from the group consisting of ammonia, methylamines and epsilon -caprolactam.

公开(公告)号：DE69230876D1

公开(公告)日：2000-05-11

申请号：DE69230876

申请日：1992-11-26

Applicant: SUMITOMO CHEMICAL CO

Inventor： ICHIHASHI HIROSHI ,  KAJIKURI HIROSHI ,  KITAMURA MASARU ,  TASAKA EIJI

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

Abstract: epsilon -Caprolactam is prepared by bringing cyclohexanone oxime into contact in gas phase with solid catalysts such as a zeolite catalyst in the presence of at least one nitrogen-containing compound selected from the group consisting of ammonia, methylamines and epsilon -caprolactam.

公开(公告)号：JPH05148223A

公开(公告)日：1993-06-15

申请号：JP31249391

申请日：1991-11-27

Applicant: SUMITOMO CHEMICAL CO

Inventor： KITAMURA MASARU ,  KAJIKURI KOJI ,  TASAKA EIJI ,  ICHIHASHI HIROSHI

IPC: B01J29/035 ,  B01J29/70 ,  C07B61/00 ,  C07D201/04

Abstract: PURPOSE:To obtain epsilon-caprolactam in extremely high selectively from cyclohexanonoxime in a vapor phase in the presence of a solid catalyst under the coexitence of epsilon-caprolactam in the reaction system. CONSTITUTION:epsilon-Caprolactam is obtained by catalytic reaction of cyclohexaboboxime in a vapor phase in the presence of a solid catalyst like crystalline silica. In this process, epsilon-caprolactam as the final product is made to coexist in the reactional system at the molar ratio, of pref. 0.1-0.8 or so based on the cyclohexanonoxime to be fed. Besides the epsilon-caprolactam, it is preferable that an alcohol such as methanol or ethanol or an other compound such as dimethyl ether be made to coexist in the reactional system. By this method, even under such a condition as to be high in the conversion rate of the cyclohexanonoxime, the objective epsilon-caprolactam can be produced in extremely high selectivity; in addition, the working life of the catalyst can significantly be improved.