Progress in the deactivation of metals contaminated FCC catalysts by a novel catalyst metallation method

摘要: Abstract The artificial deposition of contaminant metals on FCC catalysts by pore volume impregnation methods (Mitchell) followed hydrothermal deactivation in small scale units are the most common techniques for laboratory due to simplicity and robustness such methods. However, do not match outer surface catalyst particles as observed equilibrium (FCC equilibrated units). A new method metallation has been developed using a spray technique, where vanadium nickel deposited area particles. Using this novel technique remains primarily under severe conditions whilst migrates into bulk from particle catalysts. This dispersion occurs simultaneously with zeolite degradation thus leads different effects physical catalytic properties compared Mitchell-type already penetrate during step. Such differences shown numerous examples. It is also demonstrated that metallated results being closer those than after Mitchell method. Hence testing impregnated deactivated samples provides more realistic