The vapor-liquid equilibrium of the system methane, carbon dioxide, N-methyldiethanolamine (MDEA), and water was measured at pressures up to 200 bar and at the temperatures 313.15 and 353.15 K. The concentration of carbon dioxide in the vapor phase varied between 0.02 and 0.20 mole fraction, and the concentrations of the aqeuous MDEA solution were 0.30 and 0.50 mass fraction. The phase equilibrium was measured in a variable-volume static cell. The pressure in the cell can reach a maximum of 600 bar, and the temperature of the cell can range from 223.15 to 473.15 K.

Two typical FCC catalysts with similar acidities and structural properties and different crystallite sizes, CAT-SC (0.4 µm) and CAT-LC (0.9 µm), are studied in a novel CREC riser simulator using 1,3,5-triisopropylbenzene. Catalytic and thermal runs allow for the development of a heterogeneous kinetic model and the assessment of intrinsic kinetic constants and adsorption and diffusional parameters. Analysis of 1,3,5-triisopropylbenzene conversions and product distribution helps establish the influence of intracrystallite diffusion as the controlling step at lower reaction temperatures (350-450 °C). Moreover, product distribution and selectivity differences between the CAT-SC and CAT-LC catalysts provide evidence of cracking reactions affected by hindered diffusion of the reactant and products.