摘要
考察了应用N2O为氧化剂,FePO4、FePO4/SiO2、Fe0.5Al0.5PO4为催化剂气相催化氧化苯制苯酚的反应.在450℃下,FePO4催化剂上苯的转化率为2%,苯酚的选择性为85%;FePO4/SiO2(5%)催化剂上苯的转化率约为7%,苯酚的选择性为89%.Fe0.5Al0.5PO4催化剂可以使反应温度降低约100℃,350℃下反应苯的转化率为3.5%,苯酚的选择性为60%.分析表明,四面体结构的FeO4在该催化反应中具有重要的作用.
FePO\-4, FePO\-4/SiO\-2 (5%), Fe\-\{0.5\}Al\-\{0.5\}PO\-4 catalysts have been prepared and investigated for the gas\|phase direct oxidation of benzene to phenol with N2O as an oxidant. The conversion of benzene over FePO\-4 was 2%, and the selectivity to phenol was 85%; the conversion of benzene over FePO\-4/SiO\-2 (5%) was 7%, and the selectivity to phenol was 89%. Over Fe\-\{0.5\}Al\-\{0.5\}PO\-4, the reaction temperature could be decreased 100 ℃, and at 350 ℃ the conversion of benzene was 3.5%, and the selectivity to phenol was 60%. Characterization results showed that the tetrahedral coordinated FeO\-4 would play an important role during the reaction.
出处
《分子催化》
EI
CAS
CSCD
北大核心
2003年第5期342-346,共5页
Journal of Molecular Catalysis(China)
关键词
催化氧化
苯制苯酚
氧化亚氮
磷酸铁
模拟酶
Catalytic oxidation
Benzene to phenol
Nitrous oxide
Iron phosphate
Mimic Enzymes
