环己酮直接合成环己酮肟(Ⅱ)钛层柱催化剂表面酸性对氨肟化的作用  

DIRECT SYNTHESIS OF CYCLOHEXANONE OXIME FROM CYCLOHEXANONE Ⅱ THE EFFECT OF SURFACE ACIDITY OF Ti-PILC ON AMMOXIMATION

作　　者：陈晓银[1] 陶龙骧[1] 张盈珍[1] 郑禄彬[1] 

机构地区：[1]中科院大连化学物理研究所,116023

出　　处：《精细石油化工》1996年第1期44-46,共3页Speciality Petrochemicals

基　　金：国家自然科学基金;中国石化总公司科研基金资助课题

摘　　要：用反应和红外吸附方法研究了钛层柱催化剂 ( Ti PILC)的表面酸性对环己酮氨肟化的作用 ,认为 TiPILC表面 B酸位是氨肟化的活性中心之一 ,环己酮和 NH3在 B酸位上作用形成的亚胺物种经钛的过氧化物氧化为环己酮肟 。The effect of surface acidity of TiPILC on ammoximation using reaction and IR adsorption methods has been studied in this paper. The Bro¨nsted acid site over TiPILC is supposed to be one of the active centers of cyclohexanone ammoximation. The interaction of cyclohexanone with NH 3 on Bro¨nsted acid site of catalyst forms imine species which transforms to oxime oxidized by peroxo species of titanium. The formation mechanism of cyclohexanone oxime from cyclohexanone is proposed.

关 键 词：钛层柱粘土 催化剂 酸性 氨肟化 环己酮 

分 类 号：TQ234.21[化学工程—有机化工]