CO2-Induced Degradation of Amine-Containing Adsorbents: Reaction Products and Pathways
Citations Over TimeTop 1% of 2012 papers
Abstract
A comprehensive study was conducted to investigate the stability of a wide variety of mesoporous silica-supported amine-containing adsorbents in the presence of carbon dioxide under dry conditions. CO(2)-induced degradation of grafted primary and secondary monoamines (pMono, sMono), diamines with one primary and one secondary amines (Diamine) and triamine with one primary and two secondary amines (TRI) as well as different impregnated polyamines such as branched and linear polyethylenimine (BPEI and LPEI) and polyallylamine (PALL) was investigated using extensive CO(2) adsorption-desorption cycling as well as diffuse reflectance infrared Fourier transform (DRIFT) and (13)C CP MAS NMR measurements. Except for sMono, all other supported amines underwent significant deactivation in the presence of dry CO(2) under mild conditions. In all cases, the decrease in CO(2) uptake was associated with the formation of urea linkages at the expense of amine groups. The urea-containing species were identified, and the deactivation pathways were delineated.
Related Papers
- → Improvement of CO2 capture by graphite oxide in presence of polyethylenimine(2016)82 cited
- → Multilayer Nanocomplexes of Polymer and DNA Exhibit Enhanced Gene Delivery(2007)32 cited
- → Preparation and spectral properties of high-efficiency luminescent polyethylenimine-stabilized CdS quantum dots(2010)8 cited
- → Polyethylenimine-Containing Cotton Fabrics(1975)1 cited
- → CO<sub>2</sub> Capture by Polyethylenimine-Silica Mesoporous Hybrid(2012)