多级孔含铁磷铝分子筛的制备及在苯酚羟基化反应中的应用  

Synthesis of hierarchical FeAPO-5 Molecular Sieves and Its Application in Phenol Hydroxylation

作　　者：赵新红[1] 孙忠鹏[1] 

机构地区：[1]兰州理工大学,甘肃兰州730050

出　　处：《当代化工》2013年第10期1379-1382,共4页Contemporary Chemical Industry

摘　　要：以离子热法合成了多级孔铁磷铝分子筛FeAPO-5H,并利用X射线衍射(XRD)、N2物理吸附、电子自旋共振(ESR)和等离子发射光谱(ICP)等表征手段对分子筛样品进行了表征。结果表明,所合成的FeAPO-5H分子筛样品结晶度高,具有微孔-中孔的多级孔结构,样品中的铁物种主要以骨架Fe物种为主。为了对比和讨论在苯酚羟基化中的催化活性,以水热法合成了微孔铁磷铝分子筛FeAPO-5,同时考察了它们对苯酚羟基化反应的催化性能。结果表明在相近铁含量的情况下,多级孔铁磷铝分子筛比微孔铁磷铝分子筛具有更优异的催化效果。同时该催化剂具有一定的催化稳定性。Two kinds of iron-containing molecular sieve catalysts （FeAlPO-5H and FeAlPO-5） were prepared by ionothermal synthesis and direct hydrothermal synthesis, and characterized by X-Ray Diffraction （XRD）, N2 adsorption/desorption, electron spin resonance （ESR） and inductive coupled plasma emission spectrometer （ICP）. The measurement results show that FeAlPO-5H is a new type of aluminophosphate molecular sieve with hierarchical micro-and meso-porous structure, and degree of crystallinity of FeAlPO-5H is high. The Fe3＋species in FeAlPO-5H is almost in framework. The catalytic performance of FeAlPO-5H for phenol hydroxylation is higher than that of FeAlPO-5.

关 键 词：多级孔 离子热 FeAPO-5 苯酚羟基化 

分 类 号：TQ426[化学工程]