Study of molybdenum–nickel alumina based catal-sorbents to simultaneously remove of H2S and NH3 from hot coal gas

Ionic liquids and deep eutectic solvents for NH3 absorption and separation: a review

“…The porous material adsorption method uses solids [such as zeolite, graphite oxide (GO), activated charcoal (AC), silica gel (SG), alumina (Al 2 O 3 ), metal–organic frameworks (MOFs), and covalent organic frameworks (COFs)] 37–48 to purify NH 3 -containing exhaust gas. With the advantages of special solid's unique properties of high specific surface area, porosity, and specific strength, as well as low density, the adsorption process uses less energy and purifies the exhaust gas more thoroughly, but the adsorption equipment is large and only suitable for NH 3 -containing exhaust gas with low concentration.…”