The sorption enhanced steam methane reforming (SE-SMR) is an innovative process in which sorbent is used to capture CO₂ produced during the conventional steam methane reforming (SMR) process. In this way, reaction and separation takes place simultaneously in a single packed bed reactor. The use of sorbent not only facilitate the CO₂ capturing but also has advantages such as; high hydrogen (H₂) purity (upto 95% on dry basis), low operation temperature (723-873 K) as compared to conventional SMR process (1073-1300 K) and elimination of downstream H₂ purification unit operations. The SE-SMR process is almost thermo-neutral (-13 kJ/mol) due to the exothermic nature of CO₂ adsorption reaction (-178.8 kJ/mol). In this work, one dimensional heterogeneous model of SE-SMR process in an adiabatic packed bed reactor is developed on gPROMS model builder 4.1.0® for the solution of linear and non-linear algebraic equations. To study the performance of SE-SMR process, various sorbents such as; CaO, Li₂ZrO₃, Li₂SiO₄, Na₂ZrO₃ and Hydrotalcite (HTC) are used under the various operating conditions of temperature, pressure, S/C and gas mass flow velocity (Gs). The developed model is validated against the literature and equilibrium data developed on an independent equilibrium based software i.e. chemical equilibrium with application (CEA). An excellent agreement was observed in terms of CH₄ conversion, H₂ yield (wt.% of CH₄ feed), purity of H₂ and CO₂ capturing efficiency. Later on, a comparative study is performed to find out the most suitable sorbent and operating conditions for the SE-SMR process in an adiabatic packed reactor.