摘要
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 V-P-O catalysts were prepared by adding various promoters to (VO)_2P_2O_7, which was prapared in an organic solvent, and were characterized by BET, XRD, NARP and correlated with selective oxidation reaction of n-butane. The results showed that the addition of various promoters induced the defects and disorders of crystal, caused increasing of BET surface area and surface V=0 species, and improved the activity and selectivity of n-butane oxidation to maleic anhydride. The relationship between the changes of structure and catalytic performance have been investlgated, the active centre and reaction mechanism have also been discussed.
出处
《精细石油化工》
CAS
CSCD
1993年第2期23-29,共7页
Speciality Petrochemicals
基金
国家自然科学资助项目
关键词
正丁烷
催化剂
氧化
顺丁烯二酸酐
Maleic Anhydride
n-Butane
Modified (VO)_2P_2O_7 Catalysts
BET
XRD
NARP
