CO<sub>2</sub> Adsorption on Modified Mesoporous Silicas: The Role of the Adsorption Sites

The post-synthesis procedure for cyclic amine (morpholine and 1-methylpiperazine) modified mesoporous MCM-48 and SBA-15 silicas was developed. The procedure for preparation of the modified mesoporous materials does not affect the structural characteristics of the initial mesoporous silicas strongly....

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Autores principales:	Martin Ravutsov, Yavor Mitrev, Pavletta Shestakova, Hristina Lazarova, Svilen Simeonov, Margarita Popova
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	CO<sub>2</sub> capture modified mesoporous silicas morpholine and methylpiperazine solid-state NMR Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/767f508209904ad99dafa083a3490f17
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spelling	oai:doaj.org-article:767f508209904ad99dafa083a3490f172021-11-25T18:30:09ZCO<sub>2</sub> Adsorption on Modified Mesoporous Silicas: The Role of the Adsorption Sites10.3390/nano111128312079-4991https://doaj.org/article/767f508209904ad99dafa083a3490f172021-10-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/2831https://doaj.org/toc/2079-4991The post-synthesis procedure for cyclic amine (morpholine and 1-methylpiperazine) modified mesoporous MCM-48 and SBA-15 silicas was developed. The procedure for preparation of the modified mesoporous materials does not affect the structural characteristics of the initial mesoporous silicas strongly. The initial and modified materials were characterized by XRD, N<sub>2</sub> physisorption, thermal analysis, and solid-state NMR. The CO<sub>2</sub> adsorption of the obtained materials was tested under dynamic and equilibrium conditions. The NMR data revealed the formation of different CO<sub>2</sub> adsorbed forms. The materials exhibited high CO<sub>2</sub> absorption capacity lying above the benchmark value of 2 mmol/g and stretching out to the outstanding 4.4 mmol/g in the case of 1-methylpiperazin modified MCM-48. The materials are reusable, and their CO<sub>2</sub> adsorption capacities are slightly lower in three adsorption/desorption cycles.Martin RavutsovYavor MitrevPavletta ShestakovaHristina LazarovaSvilen SimeonovMargarita PopovaMDPI AGarticleCO<sub>2</sub> capturemodified mesoporous silicasmorpholine and methylpiperazinesolid-state NMRChemistryQD1-999ENNanomaterials, Vol 11, Iss 2831, p 2831 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	CO<sub>2</sub> capture modified mesoporous silicas morpholine and methylpiperazine solid-state NMR Chemistry QD1-999
spellingShingle	CO<sub>2</sub> capture modified mesoporous silicas morpholine and methylpiperazine solid-state NMR Chemistry QD1-999 Martin Ravutsov Yavor Mitrev Pavletta Shestakova Hristina Lazarova Svilen Simeonov Margarita Popova CO<sub>2</sub> Adsorption on Modified Mesoporous Silicas: The Role of the Adsorption Sites
description	The post-synthesis procedure for cyclic amine (morpholine and 1-methylpiperazine) modified mesoporous MCM-48 and SBA-15 silicas was developed. The procedure for preparation of the modified mesoporous materials does not affect the structural characteristics of the initial mesoporous silicas strongly. The initial and modified materials were characterized by XRD, N<sub>2</sub> physisorption, thermal analysis, and solid-state NMR. The CO<sub>2</sub> adsorption of the obtained materials was tested under dynamic and equilibrium conditions. The NMR data revealed the formation of different CO<sub>2</sub> adsorbed forms. The materials exhibited high CO<sub>2</sub> absorption capacity lying above the benchmark value of 2 mmol/g and stretching out to the outstanding 4.4 mmol/g in the case of 1-methylpiperazin modified MCM-48. The materials are reusable, and their CO<sub>2</sub> adsorption capacities are slightly lower in three adsorption/desorption cycles.
format	article
author	Martin Ravutsov Yavor Mitrev Pavletta Shestakova Hristina Lazarova Svilen Simeonov Margarita Popova
author_facet	Martin Ravutsov Yavor Mitrev Pavletta Shestakova Hristina Lazarova Svilen Simeonov Margarita Popova
author_sort	Martin Ravutsov
title	CO<sub>2</sub> Adsorption on Modified Mesoporous Silicas: The Role of the Adsorption Sites
title_short	CO<sub>2</sub> Adsorption on Modified Mesoporous Silicas: The Role of the Adsorption Sites
title_full	CO<sub>2</sub> Adsorption on Modified Mesoporous Silicas: The Role of the Adsorption Sites
title_fullStr	CO<sub>2</sub> Adsorption on Modified Mesoporous Silicas: The Role of the Adsorption Sites
title_full_unstemmed	CO<sub>2</sub> Adsorption on Modified Mesoporous Silicas: The Role of the Adsorption Sites
title_sort	co<sub>2</sub> adsorption on modified mesoporous silicas: the role of the adsorption sites
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/767f508209904ad99dafa083a3490f17
work_keys_str_mv	AT martinravutsov cosub2subadsorptiononmodifiedmesoporoussilicastheroleoftheadsorptionsites AT yavormitrev cosub2subadsorptiononmodifiedmesoporoussilicastheroleoftheadsorptionsites AT pavlettashestakova cosub2subadsorptiononmodifiedmesoporoussilicastheroleoftheadsorptionsites AT hristinalazarova cosub2subadsorptiononmodifiedmesoporoussilicastheroleoftheadsorptionsites AT svilensimeonov cosub2subadsorptiononmodifiedmesoporoussilicastheroleoftheadsorptionsites AT margaritapopova cosub2subadsorptiononmodifiedmesoporoussilicastheroleoftheadsorptionsites
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CO<sub>2</sub> Adsorption on Modified Mesoporous Silicas: The Role of the Adsorption Sites

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