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Suzhou kaolin as a FCC catalyst

¹ State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, the Chinese Academy of Sciences, Lanzhou 730000, P.R. China, ² Petrochemical Institute, Lanzhou Petroleum and Chemical Corporation, Lanzhou 730060, P.R. China

^* E-mail: zsq1970{at}sohu.com.cn

(Received 3 March 2005; revised 10 June 2005)

The chemical and mineralogical compositions, the pore-diameter distribution, and the X-ray diffraction, scanning electron microscopy, thermogravimetric analysis and infrared spectroscopy of kaolin from Suzhou, China, and the physicochemical and catalytic properties of a catalyst prepared from that kaolin, are presented in this paper. Crystallized microspheres (CMR) containing ~30% NaY zeolite can be prepared from the Suzhou kaolin. The catalyst produced performs better than a standard commercial catalyst in terms of activity, attrition resistance, resistance to passivation by Ni and V and better gasoline and coke selectivity.

KEYWORDS: application, China, fluidized cracking catalyst, in situ crystallization technique, kaolin, Suzhou

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