https://doi.org/10.15255/KUI.2005.012
Published: Kem. Ind. 55 (9) (2006) 373–379
Paper reference number: KUI-12/2005
Paper type: Original scientific paper
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Properties of the FCC Catalyst Additive Prepared from Guizhou Kaoline

S. Q. Zheng, W. Ding, Y. L. Zhang, Z. G. Tan and X. L. Xu

Abstract

The properties of a FCC catalyst additive prepared from Guizhou kaoline were extensively investigated. The samples were characterized by N2 adsorption, X-ray diffraction, IR spectrometry, and scanning electron microscope (SEM). The results showed that the crystallinity of NaY zeolite synthesized from this kaoline was 25 % and the silica alumina ratio was rk/s · m = 5.05. The catalyst additive prepared from above crystallization product exhibited excellent performance of nickel and vanadium passivation, offered 21 % lower coke versus base catalyst, while maintaining high bottoms upgrading selectivity.

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Keywords

kaoline, in situ crystallization technique, catalytic cracking, FCC additive, heavy metals, zeolites