Patent 8372269 was granted and assigned to BASF on February, 2013 by the United States Patent and Trademark Office.
A metal trap particle used for passivation of metals during FCC cracking comprises a calcined spray dried particle formed from kaolin, magnesium oxide or magnesium hydroxide and calcium carbonate. The metal trap particle contains at least 10 wt. % magnesium oxide which improves metals passivation during FCC cracking.