Fig. 27. Confocal fluorescence microscopy images showing the visualization of zeolite Y aggregate domains within an FCC catalyst particle with (a and b) and without (c and d) zeolite material. The images were obtained after reaction with thiophene (green) at 373 K and subsequent staining with Nile Blue (red) at 298 K. Images b and d are magnified views of the highlighted areas in a and c, respectively. (Reproduced with permission from ref. 175, Copyright Macmillan Publishers, 2011).
