期刊
CATALYSIS COMMUNICATIONS
卷 10, 期 14, 页码 1787-1790出版社
ELSEVIER
DOI: 10.1016/j.catcom.2009.04.022
关键词
Fluid catalytic cracking; Propylene; ZSM-5 modification; Phosphorus; Hydrothermal dispersion
资金
- Ministry of Science and Technology Management of PetroChina
Phosphorus-modified ZSM-5 were prepared with hydrothermal dispersion. Compared with impregnation, the virtue of this method is reducing the loss of phosphorus in the process of post treatment. Cracking of light diesel showed that more pronounced cracking activity was obtained on the catalysts containing phosphorus-modified ZSM-5 prepared by hydrothermal dispersion than that by impregnation. The catalysts were tested in an advanced catalyst evaluation (ACE) unit. The prepared catalysts increased propylene yield by 3% at least than the reference catalyst. The reason can be attributed to the higher amount of phosphorus fixed on the zeolite prepared by hydrothermal dispersion and higher residual ratio of crystallinity. (c) 2009 Published by Elsevier B.V.
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