摘要
以用于异丙苯合成的中试失活ＦＸ－０１催化剂为研究对象，研究了失活催化剂上积炭的性质及在不同温度下的烧炭再生情况，考察了再生前后催化剂的酸性、活性、晶相、比表面及孔结构等性能变化。结果表明，催化剂失活的原因在于炭沉积在孔的内表面上，从而占据了酸性中心；催化剂上的积炭在燃烧过程中会逐步石墨化，在５００℃以下难于将炭全部烧出。同时表明，经４５０℃烧炭再生后，可使积炭烧出９０％以上，催化剂表面积亦可恢复９０％，催化剂的活性基本得到恢复。
The properties of coked and regenerated FX 01 catalyst used in the synthesis of isopropylbenzene were investigated by using TPD,XRD and adsorption/desorption methods.Burning of coke at different temperatures and the coke behavior during regeneration was studied by means of TPO.The results showed that the coke deposited on FX 01 catalyst was difficult to remove due to the graphitization of coke,and the reason of deactivation was the deposition of coke on the inner pore surface.It was also showed that after regeneration at 450℃ for sufficient time,the catalyst activity could be mostly restored.
出处
《石油化工》
CAS
CSCD
北大核心
1997年第11期764-769,共6页
Petrochemical Technology
基金
中国石化总公司资助
