Abstract

A series of isothermal adsorption experimental data of lean coal has been used to verify a temperature pressure-adsorption equation (TPAE). The enthalpy of the gas adsorption process is calculated by the indefinite integral expression of the Clausius-Clapeyron equation. The lnP vs 1/T plot is shown as a straight line with a negative slope, which illustrate that the adsorption enthalpy is negative, the adsorption process is an exothermic process. High temperature conditions are not conducive to adsorption.

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