期刊
PETROLEUM SCIENCE AND TECHNOLOGY
卷 37, 期 14, 页码 1713-1721出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10916466.2019.1602643
关键词
FCC catalyst; hydrothermal deactivation; La containing ZSM-5 additives; propylene; catalytic cracking; vacuum gasoil
资金
- Ministry of Science and Technology of the Socialist Republic of Vietnam [03/2016/HD-DTCT-KC02/16-20]
The influences of La addition on the properties and the performance of xLa/ZSM-5 additives with various La loading (x is molar ratio of La/Al, x=0.25-1) for vacuum gasoil (VGO) cracking reactions were studied. Samples were deactivated via steaming treatment with 100% steam, 20hours, 816 degrees C. The highest promoting effect was obtained with 0.25La sample. The higher La loadings decrease the enhancement effect of La. XRD, BET and NH3-TPD results demonstrated that the use of low La3+ concentration solution during La addition step could lead to a better interaction of La3+ with ZSM-5 framework and increase the promoting effect.
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