Influence of support properties on selective oxidation of 2-methylnaphthalene on vanadia-molybdena based catalyst  

作　　者：Yi Yu Fanfan Li Xiaocong Li Guoji Liu Li Xu Xingchuan Yang 

机构地区：[1]School of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,China [2]School of Chemical and Printing-Dyeing Engineering,Henan University of Engineering,Zhengzhou 450007,China [3]Kaifeng Wujing Industrial Co.Ltd,Kaifeng 475000,China

出　　处：《Chinese Journal of Chemical Engineering》2023年第12期106-116,共11页中国化学工程学报（英文版）

基　　金：Henan Province Science and Technology Research Project(232102321041).

摘　　要：In this work,the catalytic performance of vanadia-molybdena loaded on TiO_(2),MgO,ZSM-5,NaY and Mordenite was investigated in the selective oxidation of 2-methylnaphthalene(2-MN)to 2-naphthaldehyde(2-NA).Results show that strong interactions between supports(TiO2,ZSM-5)and active components can promote the dispersion of active component.Monolayer VOx and MoOx are the main form on the catalyst surface,which is beneficial to the 2-NA selectivity.However,the corresponding weak interactions between Mordenite and active components may lead to the production of oxide crystals and the separation of active components,thus reducing the 2-NA selectivity.Due to the high Na content,new crystal NaVMoO6 forms on the NaY surface,which is inactive in the reaction.For V-Mo/TiO2,V and Mo can be inserted into the TiO2 lattice,changing the electronic structures of active components and support and improving the activity of surface oxygen species.This investigation highlights an important consideration on supports properties when designing supported catalysts.

关 键 词：2-METHYLNAPHTHALENE Catalysis Partial oxidation SUPPORT Interactions 

分 类 号：TQ426[化学工程]