摘要
采用喷涂法制备了钕改性的钒系／瓷球五元复合氧化物催化剂，实验表明：使用该催化剂，在反应温度４６０±１０℃、空速６０００～８０００ｈ－１、均四甲苯在空气中的浓度２０±３ｇ／ｍ３时，固体粗酐的收率９５％～１００％，产品的质量好，副产物少，易于精制提纯。该催化剂具有重现性好、稳定性高、使用寿命长的特点。
The Nd modified V/porcelain ball five component compound oxidate catalyst was prepared. By using the catalyst, at (460±10) ℃, space veiocity 6000～8000 h -1 and durene concentration in air (20±3) g/m 3, the weight yield of crude pyromellitic acid dianhydride is 95%～100%. The product has good quality containing little by product, and it is easy to be refine. The effect of Nd on catalyst was also studied and discussed.
出处
《中国稀土学报》
CAS
CSCD
北大核心
1998年第3期280-283,共4页
Journal of the Chinese Society of Rare Earths
基金
北京大学稀土材料化学及应用国家重点实验室开放基金
