China Petroleum Processing & Petrochemical Technology ›› 2023, Vol. 25 ›› Issue (1): 144-150.

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The Preparation of B2O3/SBA-15 and Its Application in Nickel-Tolerated FCC Catalyst as Matrix Component

Yuan Chengyuan1; Ju Guannan1; Chen Qiang2; Yan Tao1; Li Zhongfu1   

  1. 1. School of Materials Science and Engineering, Shandong University of Technology, Zibo, Shandong 255000, China;
    2. Shanxi Tengmao Technology Co., Ltd., Hejin, Shanxi 043300, China
  • Received:2022-10-09 Revised:2022-12-22 Online:2023-03-30 Published:2023-03-30

Abstract: Fluid catalytic cracking (FCC) is still a key process in the modern refining area, in which nickel-contamination for FCC catalyst could obviously increase the dry gas and coke yields and thus seriously affect the stability of FCC unit. Therefore, in this paper, B2O3-modified SBA-15 molecular sieves (B2O3/SBA-15) with different B2O3 contents were prepared, characterized and further used in preparation of Ni-tolerated FCC catalyst as matrix component. Characterization results suggested that, B2O3/SBA-15 samples possessed excellent Ni-passivation ability and structure properties of SBA-15 parent such as high-ordered mesopores, big surface area and high pore volume, which made B2O3/SBA-15 sample could greatly improve the Ni-tolerance performance of FCC catalyst by promoting the Structure properties and Ni-passivation ability of the prepared FCC catalyst. The evaluation results of heavy oil catalytic cracking indicated that, at the same Ni-contamination condition, the dry gas, coke and heavy oil yields for the FCC catalyst containing B2O3/SBA-15 could obviously decrease by 0.92, 1.65 and 1.26 percentage points respectively with total liquids yield increasing by 3.83 percentage points in compared with conventional FCC catalyst.

Key words: Ni-tolerance, B2O3-modification, SBA-15, FCC catalyst