M-HMS的合成、表征及在苯酚羟化反应中的催化性能

Synthesis of Mesoporous Molecular Sieve M-HMS for Catalytic Hydroxylation of Phenol

以同晶取代方法合成了 M-HMS(M=Fe、Cu、Co、V,HMS:Hexagonal Mesoporous Silicates)中孔分子筛 .经 XRD、IR、ESP表征 ,证明过渡金属离子已进入 HMS骨架中 .在苯酚羟化反应中考察了 M-HMS的催化性能 .结果表明 ,M-HMS的催化性能明显高于相对应的 M/Si O2 负载型催化剂 .依据引入 HMS骨架的过渡金属离子是苯酚羟化反应的活性中心 ,以及 H+ 和 OH-

The mesoporous molecular sieves M HMS(M=Fe,Cu,Co,V) were synthesized by using dodecylamine as template and characterized by XRD, IR, ESR. The results revealed the incorporation of the transition metal ions in the HMS framework. It was found that catalytic activity of M HMS in hydroxylation of phenol by H 2O 2 was obviously higher than that of the supported catalysts, M/SiO 2(M=Fe,Cu,Co,V) at the same reaction conditions. The active site of the M HMS appeared the transition metal ion incorporated in HMS framework.