Kim, Sun Jin Kim, Myung Hun Seo, Gon Uh, Young Sun 2024-01-20T15:03:19Z 2024-01-20T15:03:19Z 2021-09-05 2012-04 0922-6168 https://pubs.kist.re.kr/handle/201004/129377 Vapor phase Beckmann rearrangement of cyclohexanone oxime to epsilon-caprolactam has been carried out using tantalum-pillared magadiites (Ta-magadiites) with different surface areas as catalysts. The Ta-magadiite catalysts of relatively large surface areas showed high catalytic activities, due to a large number of active sites. For the Ta-magadiite catalyst of the largest surface area, the oxime conversion reached 99.1%, with 97.5% of lactam selectivity. FT-IR and NH3-TPD results demonstrated that the new hydroxyl groups and a large amount of acidic sites generated by Ta pillaring into the magadiite interlayer were responsible for the high catalytic performance of Ta-magadiite catalyst. English SPRINGER CYCLOHEXANONE OXIME ALKALI-METAL CAPROLACTAM SILICATES ZEOLITES ILERITE Preparation of tantalum-pillared magadiite and its catalytic performance in Beckmann rearrangement Article 10.1007/s11164-011-0457-x 1 RESEARCH ON CHEMICAL INTERMEDIATES, v.38, no.6, pp.1181 - 1190 RESEARCH ON CHEMICAL INTERMEDIATES 38 6 1181 1190 scie scopus 000302146600004 2-s2.0-84862775279 Chemistry, Multidisciplinary Chemistry Review CYCLOHEXANONE OXIME ALKALI-METAL CAPROLACTAM SILICATES ZEOLITES ILERITE Beckmann rearrangement Caprolactam Tantalum Magadiite Pillaring