Template-Free Synthesis of High-Content Vanadium-Doped ZSM-5 with Enhanced Catalytic Performance
Template-Free Synthesis of High-Content Vanadium-Doped ZSM-5 with Enhanced Catalytic Performance
复制标题
无模板合成具有增强催化性能的高含量钒掺杂 ZSM-5
DOI：
10.1002/slct.201702192
复制
发表时间：
2017
期刊：
影响因子：
2.1
通讯作者：
Kong Yan
中科院分区：
文献类型：
--
作者：
Liu Xianfeng;Zhong Shenglai;Yang Fu;Su Hang;Lin Wei;Chen Junchao;Peng Luming;Zhou Shijian;Kong Yan
制备过渡金属掺杂的ZSM-5沸石的高成本限于使用有机模板剂，例如四丙基氢氧化铵或四丙基溴化铵。在这项工作中，钒原子被成功地纳入到ZSM-5沸石的框架，而不使用任何有机模板剂。该方法不仅降低了钒掺杂ZSM-5的制备成本，而且大大提高了钒原子的利用率。紫外可见光谱和X射线光电子能谱表明钒原子主要以四面体配位形式存在于ZSM-5骨架中。与传统有机模板法制备的催化剂相比，钒掺杂ZSM-5催化剂中四面体钒物种的大量增加，使其在苯乙烯氧化反应中表现出更高且稳定的催化活性。
The high cost of preparation of transition metal doped ZSM‐5 zeolite is limited to the use of organic template such as tetrapropylammonium hydroxide or tetrapropylammonium bromide. In this work, vanadium atom was successfully incorporated into the framework of ZSM‐5 zeolite without using any organic template. Moreover, the method not only decreases the preparation cost of vanadium doped ZSM‐5, but also greatly enhances the utilization ratio of vanadium atom. Vanadium atom mainly exists as tetrahedral coordination in the framework of ZSM‐5 which was demonstrated by the ultraviolet visible and X‐ray photoelectron spectrum. Furthermore, vanadium doped ZSM‐5 performs high and stability catalytic activity in the oxidation of styrene compared to that of the catalyst prepared by the traditional organic template method ascribe to the greatly increase of tetrahedral vanadium species.