Adsorption and reaction behavior for the simultaneous adsorption of NO–NO2 and SO2 on activated carbon impregnated with KOH

Effect of heat treatment on CO2 adsorption of KOH-activated graphite nanofibers

“…Before the heat-treated GNFs were washed with water, the CO 2 desorption isotherms of chemical-treated GNFs did not retrace the adsorption curve, but exhibited a large hysteresis. This result occurred because the presence of potassium oxide particles on the GNFs surfaces enhances the adsorption capacity of CO 2 due to the acid-base interaction [5,32]. After water washing, the adsorption and desorption isotherms of GNFs shown in these plots basically follow the same path, suggesting that the adsorption process is reversible and the adsorbed molecules can be recovered during the desorption process as shown in Fig.…”

Interactions of NO2 with activated carbons modified with cerium, lanthanum and sodium chlorides

“…NO 2 and NO are often referred to as NO x . Since their presence in the atmosphere also affects human health [2] the efforts continue towards controlling and minimization the emissions of those gases.…”

“…Adsorption and reduction of NO 2 at conditions close to ambient have been studied extensively on various adsorbents including carbonaceous materials such as activated carbon fibers [3], soot [4,5], carbon black [5,6], char [7], carbon nanotubes [8], and activated carbon [2,[9][10][11][12]. Application of activated carbons for adsorption/reduction of NO 2 is driven by their developed pore structure [13][14][15][16].…”

Ammonia, cyclohexane, nitrogen and water adsorption capacities of an activated carbon impregnated with increasing amounts of ZnCl2, and designed to chemisorb gaseous NH3 from an air stream

“…Furthermore, the research usually focuses on the removal of only one specific gas. Adsorption tests are performed only with the gas for which the impregnant is intended [24][25][26], and they are often performed at only one condition of relative humidity. This may be well suited for filtering applications in which only one gas, such as sulfur dioxide, or one gas type, such as acidic, basic or organic, is to be adsorbed, but it is insufficient for applications in which more than one gas type is to be trapped.…”