Steam reforming using solid carbon dioxide absorbent is a high-efficiency production method of hydrogen, which has attracted attention as a source of clean energy. In our previous study, the use of solid carbon dioxide absorbent supported on electrically heated alumite was proposed. By electrifying the support, the preset temperature can be reached quickly, and the switch between absorption and emission modes can be made easily. In this study, Li4SiO4 was used as CO2 absorbent, and its support method and CO2 absorption reaction kinetics were researched. In addition, the feasibility of using the box-type reactor previously proposed was examined. As a result, a CO2 absorption plate with an absorption capacity of 30 g/m(2) was obtained. In absorption reaction dominant region, the activation energy and frequency factor were 1.97 X 10(2) kJ/mol, 8.01 X 10(9) sec(-1) respectively, calculated from the results of kinetic analysis. Using reaction rate equation, the required CO2 absorption plate surface area was calculated to be about twenty times larger than the reforming catalyst area. The results suggest that reforming catalyst and CO2 absorption plate can be introduced into the same reactor by designing the form of the absorption plate.