Reconsideration of the Adsorption/Desorption Characteristics with the Influences of Water in Unconventional Gas Systems

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Characteristics</td><td class="align_center">Physical adsorption</td><td class="align_center">Chemisorption</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Adsorption force</td><td class="align_center">Van der Waals’ force</td><td class="align_center">Chemical bond force</td></tr><tr><td class="align_left">Adsorption heat</td><td class="align_center">Approximation of heat of liquefaction</td><td class="align_center">Approximation of chemical reaction heat</td></tr><tr><td class="align_left">Adsorption temperature</td><td class="align_center">Low (under critical temperature)</td><td class="align_center">Fairly high (outclass boiling point)</td></tr><tr><td class="align_left">Adsorption rate</td><td class="align_center">Fast</td><td class="align_center">Slow</td></tr><tr><td class="align_left">Selectivities</td><td class="align_center">No</td><td class="align_center">Yes</td></tr><tr><td class="align_left">Adsorbed layers</td><td class="align_center">Monolayer or multilayer</td><td class="align_center">Monolayer</td></tr><tr><td class="align_left">Characteristics of desorption</td><td class="align_center">Complete desorption</td><td class="align_center">Difficulty with chemical reaction</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Comparison of physical adsorption and chemisorption.</div>

Geofluids

tab2

Table 2

Table 2: Reconsideration of the Adsorption/Desorption Characteristics with the Influences of Water in Unconventional Gas Systems 