A novel FCC catalyst synthesized via in situ overgrowth of NaY zeolite on kaolin microspheres for maximizing propylene yield

• Published in: Catalysis today Vol. 125; no. 3; pp. 163 - 168
• Main Authors: Liu, Honghai, Zhao, Hongjuan, Gao, Xionghou, Ma, Jiantai
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 30.07.2007; Elsevier Science
• Subjects: Applied sciences; Catalysis; Chemistry; Energy; Exact sciences and technology; FCC catalyst; Fuel processing. Carbochemistry and petrochemistry; Fuels; General and physical chemistry; In situ synthesis; Ion-exchange; NaY/kaolin composite microspheres; Propylene; Surface physical chemistry; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Zeolites: preparations and properties; Propylene; FCC catalyst; NaY/kaolin composite microspheres; In situ synthesis; Clay; Microsphere; In situ; Zeolite; Composite material; Molecular sieve; Heterogeneous catalysis; Propene; Synthesis; Upgrading; Catalyst; Kaolin; Heavy oil
• ISSN: 0920-5861; 1873-4308
• DOI: 10.1016/j.cattod.2007.05.005

NaY/kaolin composite microspheres were synthesized by an in situ method using calcined kaolin microspheres as raw material. By mixing the modified NaY/kaolin composite microspheres and additive microspheres containing ZSM-5, a novel fluid catalytic cracking (FCC) catalyst for maximizing propylene yield in FCC unit was prepared. The catalyst was characterized by X-ray diffraction (XRD), temperature-programmed desorption of ammonium (NH 3-TPD), and N 2 adsorption–desorption techniques and tested in a bench FCC unit. The characterization results indicated that the catalyst has more meso- and macro-pores and more acid sites than the reference catalyst and thus can increase propylene yield by 1.27%.