摘要
以待再生的加氢裂化预处理催化剂为考察前体,通过控制再生温度,得到烧炭再生效果良好的催化剂。用合适的助剂对再生催化剂进行后处理,得到复活催化剂。以低温氮吸附、X射线衍射、透射电子显微镜和X射线光电子能谱对复活前后的催化剂进行表征,并进行活性评价。结果表明:随着催化剂再生温度的提高,催化剂孔结构逐步恢复,小于4nm的小孔数量减少;后处理可以明显改善再生催化剂的孔结构,促进活性组分在催化剂表面的分散,提高活性金属的硫化程度;复活催化剂的活性较新鲜催化剂有所提高。
Spent hydrocracking pretreating catalyst was regenerated under control temperatures;the well regenerated catalysts were further treated with suitable assistant agents under post-processing conditions to obtain reactivated catalysts.Catalysts prior and post to reactivation were characterized by means of nitrogen adsorption,X-ray diffraction,transmission electron microscopy and X-ray photoelectron spectroscopy,as well as evaluation of catalytic activity.Results showed that with the increase of regeneration temperature,the pore structure of the catalyst restored gradually and the number of small pores（less than 4 nm） decreased.The post-processing of regenerated catalyst could improve the catalyst pore structure significantly,help the active components well disperse on the catalyst surface and promote the active metals to be sulfurized,thus the activity of the reactivated catalyst was even higher than that of the fresh catalyst.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2012年第6期58-61,共4页
Petroleum Processing and Petrochemicals
关键词
加氢处理催化剂
再生
复活
后处理
hydrotreating catalyst
regeneration
reactivation
post-processing
