Eloy S. Sanz-Pérez

Development of high efficiency adsorbents for CO2 capture based on a double-functionalization method of grafting and impregnation

A functionalization method based on the impregnation of previously grafted pore-expanded SBA-15 is presented. The combination of tethered and mobile amino groups has led to a synergic effect, yielding samples with CO2 uptakes up to 235 mg CO2 per g (5.34 mmol CO2 per g) at 45 °C and 0.15 bar CO2 and high adsorption efficiencies.

An investigation of the textural properties of mesostructured silica-based adsorbents for predicting CO2 adsorption capacity

Among the technologies proposed to reduce greenhouse gas emissions, adsorption with porous solids has been widely studied in the past few years. Herein, up to 30 inorganic porous adsorbents have been studied, obtaining their CO2 uptake at 45 °C and ambient pressure, typical conditions of industrial post-combustion facilities after the desulphurization step. A clear relationship between CO2 adsorption capacity and the combination of surface area (SBET) and sorbent affinity towards gas molecules through C parameter was found. This study provides novel findings that allow the prediction of CO2 uptake in mesostructured silica physisorbents from their textural properties.