Journal of Industrial and Engineering Chemistry

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Influence of combined alkaline treatment and Fe-Ti-loading modification on ZSM-5 zeolite and its catalytic performance in light olefin production

  • Hao, Kun (State Key Laboratory of Heavy Oil Processing, The Key Laboratory of Catalysis of CNPC, College of Chemical Engineering, China University of Petroleum) ;
  • Shen, Baojian (State Key Laboratory of Heavy Oil Processing, The Key Laboratory of Catalysis of CNPC, College of Chemical Engineering, China University of Petroleum) ;
  • Wang, Yandan (State Key Laboratory of Heavy Oil Processing, The Key Laboratory of Catalysis of CNPC, College of Chemical Engineering, China University of Petroleum) ;
  • Ren, Jia (State Key Laboratory of Heavy Oil Processing, The Key Laboratory of Catalysis of CNPC, College of Chemical Engineering, China University of Petroleum)
  • Published : 2012.09.25
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Abstract

Alkali-treatment and Fe-Ti-loading were used to modify ZSM-5 zeolite. It was found that alkali- treatment created mesopore and Fe-Ti-loading improved the redox property of ZSM-5 catalyst, although both modifications led to a reduction of the total acid sites amount. The catalytic performance test indicated that the coexistence of meso-microporosity and Fe-Ti-loading on ZSM-5 catalyst is benefit to improve the yield of light olefins in catalytic cracking. The catalyst containing the combined modified ZSM-5 increased the propylene yield by 0.55 wt% and total light olefins yield by 0.69 wt% in catalytic cracking of Canadian LGO (light gas oil), compared with the reference HZSM-5.

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