Preprint Article Version 1 This version is not peer-reviewed

Adsorption of Carbon Dioxide into Amine Functionalized Ordered Mesoporous Materials

Version 1 : Received: 30 September 2018 / Approved: 30 September 2018 / Online: 30 September 2018 (09:21:52 CEST)
Version 2 : Received: 26 December 2018 / Approved: 27 December 2018 / Online: 27 December 2018 (05:28:16 CET)

How to cite: Barbosa, M.N.; Costa, M.J.F.; Barbosa, M.N.; Fernandes Jr., V.J.; Salazar-Banda, G.R.; Coriolano, A.C.F.; Reyes-Carmona, Á.; Rodríguez-Castellón, E.; Araujo, A.S. Adsorption of Carbon Dioxide into Amine Functionalized Ordered Mesoporous Materials. Preprints 2018, 2018090605 (doi: 10.20944/preprints201809.0605.v1). Barbosa, M.N.; Costa, M.J.F.; Barbosa, M.N.; Fernandes Jr., V.J.; Salazar-Banda, G.R.; Coriolano, A.C.F.; Reyes-Carmona, Á.; Rodríguez-Castellón, E.; Araujo, A.S. Adsorption of Carbon Dioxide into Amine Functionalized Ordered Mesoporous Materials. Preprints 2018, 2018090605 (doi: 10.20944/preprints201809.0605.v1).

Abstract

The adsorption of carbon dioxide on amino silanes-functionalized MCM-41 and SBA-15 materiais is reported. The functionalization of mesoporous silicas was made by post-synthesis method, by impregnation of 3-aminopropyltriethoxysilane. The obtained materials were characterized by X-ray diffraction, scanning and transmission electron microscopies, nitrogen adsorption-desorption and X-ray photoelectron spectroscopy measurements. The carbon dioxide adsorption capacities for the samples were carried out under ambient pressures. The obtained results evidenced that amino-silanes with a terminal amine (–NH2) were functionalized through covalent coupling of this group on the surface of the channels in the ordered mesoporous silica, meaning that the amine is anchored on the surface of the bigger pores of the MCM-41 and SBA-15 support. For functionalized materials, the CO2 adsorption capacity of the AMCM-41 increased from 0.18 to 1.1 mmol g−1, whereas for ASBA-15, it was from 0.6 to 1.8 mmol g−1. The Lagergren kinetic algorithms were applied in order to validate the obtained results, evidencing the enhanced carbon dioxide adsorption capacity and stability of the functionalized ordered mesoporous molecular sieves.

Subject Areas

adsorption; 3-Aminopropyltriethoxysilane; carbon dioxide; functionalization; mesoporous silica; MCM-41; SBA-15

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