Key;
Laboratory;
of;
Chemical;
Resource;
Engineering,;
Beijing;
University;
of;
Chemical;
Technology,;
Beijing;
100029,;
China;
Key;
Laboratory;
of;
Heavy;
Oil;
Processing,;
China;
University;
of;
Petroleum,;
Beijing;
102249,;
China;
Petrochemical;
Center,;
Petrochemical;
Research;
Institute,;
PetroChina;
Company;
Limited,;
Lanzhou;
730060,;
Gansu,;
China;
催化剂制备; 磷改性; 裂解性能; 丁烯; 固定流化床反应器; NH3-TPD; 磷酸二氢铵; X射线衍射;