Effect of pore size, aminosilane density and aminosilane molecular length on CO 2 adsorption performance in aminosilane modified mesoporous silica

Hori, Keisuke; Higuchi, Tatsuhiro; Aoki, Yu; Miyamoto, Manabu; Oumi, Yasunori; Yogo, Katsunori; Uemiya, Shigeyuki

doi:10.1016/j.micromeso.2017.03.020

Cited by 48 publications

(27 citation statements)

References 37 publications

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“…Over recent years, many efforts have been made to expand the pore diameter or increase the pore volume of mesostructured silica supports to increase the amine loading and hence CO 2 uptake capacity. It has been found that regardless the preparation techniques employed, the immobilised amine sorbents prepared using pore-expanded MCM-41, [29][30][31][32] MCM-48, 29 SBA-15 [29][30][31][32] and HMS 33,34 all showed considerably higher CO 2 adsorption capacities than their pore-unexpanded counterparts. In addition to the pore size and volume, the length of pore channels of support materials also appears to play a vital role in determining the CO 2 adsorption capacity and kinetics of amine-modied silica adsorbents due to the mass transfer limitations within extended meso-channel networks.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and functionalisation of spherical meso-, hybrid meso/macro- and macro-porous cellular silica foam materials with regulated pore sizes for CO₂ capture

et al. 2018

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Section: Introductionmentioning

confidence: 99%

Synthesis and functionalisation of spherical meso-, hybrid meso/macro- and macro-porous cellular silica foam materials with regulated pore sizes for CO₂ capture

et al. 2018

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“…However, (3-trimethoxysilylpropyl) diethylentriamine (TA) modified mesoporous silicas with small pores such as MCM-41 (2.9 or 3.1 nm) and SBA-15 (6.2 or 7.1 nm) were significantly decreased at high aminosilane density. In contrast, modified SBA-15 with a large pore (10.6 nm) exhibited further improvement of CO2 adsorption capacity and amine efficiency [13].…”

Section: Introductionmentioning

confidence: 91%

Adsorption of Carbon Dioxide into Amine Functionalized Ordered Mesoporous Materials

Barbosa¹,

Costa²,

Barbosa³

et al. 2018

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The adsorption of carbon dioxide on amino silanes-functionalized MCM-41 and SBA-15 materials 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.

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“…However, (3trimethoxysilylpropyl) diethylentriamine (TA) modified mesoporous silicas with small pores such as MCM-41 (2.9 or 3.1 nm) and SBA-15 (6.2 or 7.1 nm) were significantly decreased at high aminosilane density. In contrast, modified SBA-15 with a large pore (10.6 nm) exhibited further improvement of CO2 adsorption capacity and amine efficiency [13].…”

Section: Introductionmentioning

confidence: 91%

Adsorption of Carbon Dioxide into Amine Functionalized Ordered Mesoporous Materials

Mn¹,

Mjf²,

Vj³

et al. 2018

Preprint

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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.

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Effect of pore size, aminosilane density and aminosilane molecular length on CO 2 adsorption performance in aminosilane modified mesoporous silica

Cited by 48 publications

References 37 publications

Synthesis and functionalisation of spherical meso-, hybrid meso/macro- and macro-porous cellular silica foam materials with regulated pore sizes for CO₂ capture

Synthesis and functionalisation of spherical meso-, hybrid meso/macro- and macro-porous cellular silica foam materials with regulated pore sizes for CO₂ capture

Adsorption of Carbon Dioxide into Amine Functionalized Ordered Mesoporous Materials

Adsorption of Carbon Dioxide into Amine Functionalized Ordered Mesoporous Materials

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Effect of pore size, aminosilane density and aminosilane molecular length on CO 2 adsorption performance in aminosilane modified mesoporous silica

Cited by 48 publications

References 37 publications

Synthesis and functionalisation of spherical meso-, hybrid meso/macro- and macro-porous cellular silica foam materials with regulated pore sizes for CO2 capture

Synthesis and functionalisation of spherical meso-, hybrid meso/macro- and macro-porous cellular silica foam materials with regulated pore sizes for CO2 capture

Adsorption of Carbon Dioxide into Amine Functionalized Ordered Mesoporous Materials

Adsorption of Carbon Dioxide into Amine Functionalized Ordered Mesoporous Materials

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Product

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Synthesis and functionalisation of spherical meso-, hybrid meso/macro- and macro-porous cellular silica foam materials with regulated pore sizes for CO₂ capture

Synthesis and functionalisation of spherical meso-, hybrid meso/macro- and macro-porous cellular silica foam materials with regulated pore sizes for CO₂ capture