钒磷氧化物的原位拉曼光谱表征  

Characterization of vanadium phosphorus oxide by in situ Raman spectroscopy

作　　者：商宜美[1] 师慧敏[1] 姜健准[1] 王斌[1] 王焕茹[1] 胡潇雨 Shang Yimei;Shi Huimin;Jiang Jianzhun;Wang Bin;Wang Huanru;Hu Xiaoyu(SINOPEC(Beijing)Research Institute of Chemical Industry Co.,Ltd.,Beijing 100013)

机构地区：[1]中石化(北京)化工研究院有限公司,北京100013

出　　处：《石化技术》2023年第4期150-152,共3页Petrochemical Industry Technology

摘　　要：运用原位拉曼光谱实时表征了钒磷氧化物在反应过程中微观晶相结构的动态变化过程,结果表明钒磷氧化物的晶相结构会随着反应条件的变化而变化,反应气氛中正丁烷的存在有稳定V~Ⅳ和促进(VO)_(2)P_(2)O_(7)含量的趋势,而氧气可以促进V~Ⅴ的形成,不同的活化条件下V~Ⅳ和V~Ⅴ的含量在氧化物中保持特定的平衡。In situ Raman spectroscopy was used to characterize the dynamic changes in the microstructure of vanadium phosphorus oxides during the reaction process.The results show that the crystal structure of vanadiumⅣphosphorus oxide varies with the reaction conditions.The existence of n-butane had the tendency to stabilize V and promote the content of (VO)_(2)P_(2)O_(7) species,while oxygen could enhance the formation of VⅤ.Thus,differentⅣⅤcontent of V and V maintained a specific balance in the oxide compounds at different activation conditions.

关 键 词：原位拉曼光谱 钒磷氧化物 正丁烷 选择性氧化 顺酐 

分 类 号：TQ225.23[化学工程—有机化工] TQ426[理学—分析化学] O657.37[理学—化学]