Abstract
Abstract The mechanism of various surfactant additives co-impregnated with polymeric amines on silica supports has been investigated. The application of this understanding was applied to yield adsorbents with a significant reduction in regeneration requirements. Under a pure temperature swing adsorption process, a working capacity of 2.82 mmolg -1 was achieved between 75–120 °C, representing an increase in working capacity of 55% compared to single component impregnated adsorbents. A broad range of surfactant additives and loadings were studied as co-impregnation species in SBA-15 supported polyethlyleneimine (PEI) and tetraethylenepentamine (TEPA) solid adsorbents. The performance of these systems was evaluated by their adsorption capacity, adsorption kinetics, peak adsorption temperature and desorption profiles. We found that triethanolamine and sodium dodecylsulfate in selected loadings offered superior adsorbent properties
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