A series of CO2 adsorption tests were conducted in a fluidized bed vessel. using an impregnated polyamine This is sorbent was cross-linked using a silyl derivative to improve its stability and hydrophobicity: The fluidization and adsorption behavior of this sorbent Was characterized over a range of flows,, temperatures, and CO2, concentrations. A Latin hypercube space-filling experimental design was implemented for each of three-operating modes (nonreactive at ambient and flue gas temperatures, and in a reactive mode using 10-20%. CO2) to evaluate hydrodynamics, thermal, and flue gas CO2 adsorption; effects independently. It was. found that the Variable :having the greatest impact-on adsorption capacity was the duration. of testing. The capacity degraded by about 10% over the 100 h of testing. The slope from all points in the hypercube matrix indicates the heat of adsorption is approximately 65:8 kJ/mol CO2, a value consistent with the literature.