Catalytic Materials

Study on highly active FCC matrix materials prepared by suspended solids and catalytic performance

  • ZHANG Li ,
  • HU Qingxun ,
  • CHEN Jun ,
  • LIU Huangfei ,
  • FANG Hua ,
  • WANG Jiujiang ,
  • LIU Honghai ,
  • CAO Gengzhen
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  • 1. Lanzhou Petrochemical Research Center,Petrochemical Research Institute,PetroChina,Lanzhou 730060,China
    2. Kungang Advanced Manufacturing(Beijing) Co. ,Ltd. ,Lanzhou Branch,PetrochemicalResearch Institute,PetroChina,Lanzhou 730060,China

Received date: 2024-05-07

  Online published: 2024-07-30

Abstract

In order to develop low-cost and highly active matrix materials in the field of catalytic cracking to improve the reaction performance of catalysts,the suspended solids generated in the in-situ crystallization catalytic cracking catalysts process are studied.XRD,SEM,NH3-TPD,nitrogen adsorption,particle size and other characterization methods were used to characterize the suspended solids before and after modification,and their catalytic performance was studied when applied to semi-synthetic catalytic cracking catalysts.The system verification and evaluation results indicated that the suspension was a mixture of Y-shaped molecular sieve and amorphous silicon aluminum material,with elemental composition mainly composed of silicon oxide,aluminum oxide,etc.After modification,the suspension had the Brunauer-Emmett-Teller(BET) surface area of 490 m2/g and pore volume of 0.42 cm3/g.It had excellent structural stability and a high total acid content.The micro reactivity reached 35% at 800 ℃ for 17 hours,significantly higher than that of the matrix material in use.Compared with catalysts without suspended solids,catalysts containing suspended solids showed that the conversion yield was increased from 83.9% to 81.1%,the slurry yield was decreased from 6.17% to 5.06% and gasoline yield was increased from 52.10% to 53.95%,total liquid yields was increased from 85.37% to 86.59%,without increasing dry gas and coke.It demonstrated that suspended sludge had excellent heavy oil conversion ability and product selectivity,and could be used as a low-cost,high-performance matrix material in the field of fluid catalytic cracking.

Cite this article

ZHANG Li , HU Qingxun , CHEN Jun , LIU Huangfei , FANG Hua , WANG Jiujiang , LIU Honghai , CAO Gengzhen . Study on highly active FCC matrix materials prepared by suspended solids and catalytic performance[J]. Inorganic Chemicals Industry, 2025 , 57(7) : 127 -133 . DOI: 10.19964/j.issn.1006-4990.2024-0254

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