Complexity of ammonia interactions on activated carbons modified with V2O5

On the reactive adsorption of ammonia on activated carbons modified by impregnation with inorganic compounds

“…For the sake of clarity, data related to those samples are not present in this paper. However, studies conducted with those materials have confirmed that the heating/calcination process does not contradict the results described in this paper [37][38][39][40].…”

“…BAX-1500 (W carbon) was also modified with vanadium and molybdenum oxides [39,40]. Solutions of ammonium vanadate (NH 4 VO 3 ) and ammonium molybdate ((NH 4 ) 6 Mo 7 O 24 Á4H 2 O) were used for this impregnation.…”

“…In particular, the role of water, either in the air stream and/or on the adsorbent surface is important [27,[36][37][38][39][40][41][42].…”

“…The objective of this paper is to present the comprehensive summary of our work on ammonia adsorption on activated carbons, virgin, oxidized and modified by impregnation with different types of inorganic matter [36][37][38][39][40][41]. A comparison with untreated carbons, in terms of the efficiency and mechanism of adsorption, is presented.…”

Activated carbon fiber composites for gas phase ammonia adsorption

“…Methods to increase O content include AC surface oxidation by sulfuric acid [13,15], nitric acid [12,14,15], air [15], hydrogen peroxide and sodium dichloroisocyanurate [16]. Another common approach to modify AC is through impregnation of metal chloride salts or oxides, including W, V, Mo, Zn, Cr, Cu, etc [17][18][19][20][21][22].…”