在有机溶剂中制备了(VO)_2P_2Or,往其中添加各种助催化剂制备了一系列改性V-P-O催化剂,运用BET、XRD、NARP、TPD等进行了表征,并与正丁烷选择氧化反应加以关联。结果表明,各种助催化剂的加入诱发晶体失序与缺陷,从而增加了比表面积和表面V=0物种,进而促进了正丁烷氧化制顺酐的活性与选择性。研究了结构改变与性能改进之间的关系,并探讨了氧化反应活性中心和反应机理。 A series of modified VPO catalysts were prepared by adding (VO) 2P2Or in organic solvents. Various modified VPO catalysts were prepared and characterized by BET, XRD, NARP and TPD, and were correlated with the selective oxidation of n-butane . The results showed that the addition of various cocatalysts induced crystal disorder and defects, thus increasing the specific surface area and surface V = 0 species, thus promoting the activity and selectivity of n-butane oxidation to maleic anhydride. The relationship between structural change and performance improvement was studied, and the active sites of oxidation reaction and reaction mechanism were discussed.