MICROSCOPIC MODELING OF ELECTROTHERMAL DESORPTION

A mathematical model of thermal desorption with internal electroresist ive heating of the adsorbent is postulated for a single particle. Thre e parallel mechanisms are considered: surface diffusion, pore diffusio n and thermal diffusion. The resulting system of partial differential equations is solved numerically using orthogonal collocation. Using th e model, computer simulation is performed and the influence of differe nt model parameters investigated. The advantage of desorption with int ernal sorbent heating (such as electrothermal desorption) is proved.