V-Co-β沸石的合成及结构表征  

Synthesis and Characterization of V-Co-βZeolite

作　　者：张敏[1] 何红运[1] 

机构地区：[1]湖南师范大学化学化工学院,中国长沙410081

出　　处：《湖南师范大学自然科学学报》2011年第5期55-59,共5页Journal of Natural Science of Hunan Normal University

基　　金：湖南省自然科学基金资助项目(08JJ3026)

摘　　要：以白炭黑(二氧化硅)为硅源,四乙基氢氧化铵为模板剂,氟化铵为矿化剂,偏钒酸铵和氯化钴为杂原子V和Co源,采用水热合成法合成了V-Co-β沸石,运用XRD、FT-IR、UV-Vis、TG-DTA、SEM、EDS等技术对样品进行了表征,并探讨了影响V-Co-β沸石合成的因素.结果表明,按物质的量比n(SiO2)∶n(CoO)∶n(V2O5)∶n[(TEA)2O]∶n(H2O)∶n(NH4F)=60∶(0.5～3.0)∶(0.25～1.5)∶(16～18)∶(550～650)∶(25～35)配制初始反应混合物,可以制备出结晶良好的V-Co-β沸石,且V和Co进入沸石骨架.The V-Co-β zeolite was hydrothermally synthesized by silica（SiO2） as silica source,tetraethyl ammonium hydroxide（TEAOH） as the template,ammonium fluoride as mineralizer,cobalt chloride and ammonium metavanadate as heteroatoms V and Co source.The structure and chemical composition of the zeolite samples were characterized by XRD,FT-IR,UV-Vis,TG-DTA,SEM and EDS techniques.The factors that affected the synthesis of V-Co-β zeolite were investigated.The results indicate that the well-crystallized V-Co-β zeolite can be synthesized from the precursor with n（SiO2）∶ n（CoO）∶ n（V2O5）∶ n[（TEA）2O]∶ n（H2O）∶ n（NH4F） molar ratio of 60∶（0.5~3.0）∶（0.25~1.5）∶（16~18）∶（550~650）∶（25~35）,and the V and Co atoms entered the framework of the zeolite.

关 键 词：钒 钴 Β沸石 水热合成 

分 类 号：O643[理学—物理化学]