在吸附过程中产生的能量，由于吸附过程中分子的运动速度由快变慢最终停止在吸附介质表面上，所以由于速度的降低有一部分能量将被释放出来，这部分能量被称为吸附能。(The energy generated during the adsorption process, due to the slow movement of the molecules during the adsorption process, eventually stops on the surface of the adsorption medium, so part of the energy will be released due to the decrease of the velocity. This part of energy is called adsorption energy.)