Multi-metal oxide aerogel for capture of pollution gases from air

Larnite powders and larnite/silica aerogel composites as effective agents for CO2 sequestration by carbonation

“…This proposal has real viability. The presence of certain cations in the composition of a calcium silicate gel guarantees the elimination of gas [29]. To achieve this objective, it was previously necessary to obtain the optimization of the parameters that speed up the reaction in the reactor.…”

Chemically Active Silica Aerogel−Wollastonite Composites for CO2 Fixation by Carbonation Reactions

“…19,20 Also, aerogels can be moulded to any shape, size, and chemical functionality. 21 These properties make aerogels attractive materials for use in the adsorption, capture, and sequestration of pollutant gases. For the particular purpose of CO 2 fixation, the addition of an active divalent cation silicate, such as wollastonite, is necessary to promote the CO 2 speciation and its subsequent capture via carbonation reactions in a solid stable phase.…”

Tuning Porous Networks in Polyimide Aerogels for Airborne Nanoparticle Filtration

“…Porous materials offer high pore volume and large internal surface area . In this context, aerogels are a unique class of materials with high porosity (>90%), extremely low density (<0.02 g/cm 3 ), and large surface area (1000 m 2 /g). − A large number of aerogel materials were obtained from polymers, − transition metals, , and other composites material systems. , Ahmed et al produced aerogels containing metal oxides such as CaO and MgO to capture gases that cause air pollution. Such gases as CO 2 , SO 2 , NO x , and H 2 S were efficiently removed through both chemical and physical mechanisms.…”