Bio-oils/FCC co-processing: Insights into the adsorption of guaiacol on Y zeolites with distinct acidity and textural properties

The guaiacol adsorption capacity of several Y zeolites with different physicochemical properties was tested by performing breakthrough experiments, in order to investigate the on Fluid Catalytic Cracking catalysts during bio-oils/FCC feedstocks co-processing. X-Ray diffraction, nitrogen sorption measurements and pyridine followed Infrared Spectroscopy were used determine framework Si/Al ratio, textural parameters, finally nature amount acid sites. Klinkenberg model fit experimental data obtain ka (overall coefficient mass transfer) Ke (adsorption equilibrium constant) which are directly related to, respectively, kinetic thermodynamic aspects. values, so adsorption, observed increase total number Brønsted Lewis sites zeolites, as well Na exchange. Conversely, mesoporosity increases diffusion rate inside zeolite structure, leading higher values decreasing retention. Overall, show that FCC catalysts, its impact activity, might decrease catalyst age, owing changes taking place operation.