Heterogeneous catalytic distallation has seen in the last few years an increase in interest from both academic and industrial researchers as a means of obtaining higher product yields in otherwise equilibrium-limited processes. One of the first steps toward the design of a reactive distillation column is the study of the system's residue curve maps (RCMs), which are normally obtained through simulation of a simple batch distillation in a heated still. Although this process always works in an unsteady state, unsteady-state phenomena, such as adsorption, are usually not considered when deriving a model. In this paper, a four-component reactive system, comprised of 2-methyl-1-butene, 2-methyl-2-butene, methanol, and tert-amyl methyl ether, is studied to determine the effects of adsorption in the RCMs. To do so, two new models that take into account Langmuir mono- and multicomponent isotherms were derived and used for the construction of the RCMs. These RCMs were then compared to those of the nonadsorptive mo...