NONOXIDATIVE DEHYDROGENATION OF CYCLOHEXANOL OVER COPPER IRON BINARY OXIDES

被引：34
作者：
CHEN, WS
LEE, MD
LEE, JF
机构：
[1] NATL TAIWAN UNIV,DEPT CHEM ENGN,TAIPEI 10764,TAIWAN
[2] CHINA TECH CONSULTANTS INC,CATALYST RES CTR,MIAOLI 35102,TAIWAN
来源：
APPLIED CATALYSIS A-GENERAL | 1992年 / 83卷 / 02期
关键词：
CATALYST CHARACTERIZATION (ACIDITY; BET; MOSSBAUER SPECTROSCOPY; TPD; XRD); COPPER; CYCLOHEXANOL; DEHYDROGENATION; IRON; SELECTIVITY; (CYCLOHEXANONE; CYCLOHEXENE; PHENOL);
D O I：
10.1016/0926-860X(92)85035-A
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The catalytic behavior of copper-iron binary oxides in the nonoxidative dehydrogenation of cyclohexanol was studied. Catalyst characterization was carried out by means of X-ray diffraction (XRD), Mossbauer spectroscopy, temperature-programmed desorption (TPD) and BET surface area measurements. It was observed that dehydrogenation of cyclohexanol to cyclohexanone proceeds mainly on reduced metallic copper. The yield of cyclohexanone reached a level as high as 79% on Cu-Fe3O4 at 663 K, much higher than that on Cu-ZnO (ca. 56%). As regards the dehydration side reaction, it seemed that cyclohexene was formed on the acidic sites resulting from the partial occupation of octahedral sites in the magnetite structure by Cu2+ ions. On the other hand, the dehydrogenation of cyclohexanol to phenol appeared to occur on the surface of Fe3O4.
引用
收藏
页码：201 / 211
页数：11
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