CO2 adsorption on Santa Barbara Amorphous-15 (SBA-15) and amine-modified Santa Barbara Amorphous-15 (SBA-15) with and without controlled microporosity

Yan, Xinlong; Komarneni, Sridhar; Zhang, Yan

doi:10.1016/j.jcis.2012.09.038

Cited by 81 publications

(38 citation statements)

References 58 publications

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“…The Langmuir isotherm is the most widely applied equation for describing the monolayer physisorption or chemisorption, and it is based on the assumption that monolayer adsorption occurred over homogeneous sites [42].…”

Section: Adsorption Thermodynamicsmentioning

confidence: 99%

Tetraethylenepentamine-modified MCM-41/silica gel with hierarchical mesoporous structure for CO2 capture

Wang

Guo

Kong

2015

Chemical Engineering Journal

107

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Section: Adsorption Thermodynamicsmentioning

confidence: 99%

Tetraethylenepentamine-modified MCM-41/silica gel with hierarchical mesoporous structure for CO2 capture

Wang

Guo

Kong

2015

Chemical Engineering Journal

107

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“…Various research groups have developed various porous materials as supports for amine-functionalized solid adsorbents. Among these, mesoporous silicas are widely used as support materials due to their outstanding textural and surface properties, such as large surface area and pore volume [22,23]. Polyethyleneimine (PEI) has become to be the most typical commercial amine impregnated into mesoporous silica.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Adsorption of Carbon Dioxide from Simulated Biogas on PEI/MEA-Functionalized Silica

Sun

Liu

Wang

et al. 2020

IJERPH

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A series of efficient adsorbents were prepared by a wet-impregnation method for CO2 separation from simulated biogas. A type of commercially available silica, named as FNG-II silica (FS), was selected as supports. FS was modified with a mixture of polyethyleneimine (PEI) and ethanolamine (MEA) to improve the initial CO2 adsorption capacity and thermal stability of the adsorbents. The influence of different adsorbents on CO2 adsorption performance was investigated by breakthrough experiments. Scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR), and N2 adsorption–desorption isotherm were used to characterize the silica before and after impregnating amine. Additionally, the thermal stability of adsorbents was measured by differential thermal analysis (TDA). Silica impregnated with mixtures of MEA and PEI showed increased CO2 adsorption performance and high thermal stability compared with those obtained from silica impregnated solely with MEA or PEI. With a simulated biogas flow rate of 100 mL/min at 0.2 MPa and 25 °C, FS-10%MEA-10%PEI exhibited a CO2 adsorption capacity of ca. 64.68 mg/g which increased by 81 % in comparison to FS-20%PEI. The thermal stability of FS-10%MEA-10%PEI was evidently higher than that of FS-20%MEA, and a further improvement of thermal stability was achieved with the increasing value of PEI/MEA weight ratio. It was showed that MEA was able to impose a synergistic effect on the dispersion of PEI in the support, reduce the CO2 diffusion resistance and thus increase CO2 adsorption performance. Additionally, if the total percentage of amine was the same, FS impregnated by different ratios of PEI to MEA did not exhibit an obvious difference in CO2 adsorption performance. FS-15%PEI-5%MEA could be regenerated under mild conditions without obvious loss of CO2 adsorption activity.

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“…1,2 Devido a essas características esses materiais têm sido bastante empregados, sendo relatados na literatura vários trabalhos em diversas áreas, tais como: catálise, adsorção, troca iônica, transporte de fármacos e fabricação de materiais funcionais avançados. [3][4][5][6] O SBA-15 é um material mesoporoso a base de sílica, que foi desenvolvido e sintetizado pela primeira vez por Zhao et al (1998) na Universidade da Califórnia -Santa Bárbara, EUA. Este material apresenta-se como um dos materiais mesoporosos mais investigados e empregados nos últimos tempos por apresentar uma estrutura mesoporosa unidirecional, elevado diâmetro médio de poros e grande estabilidade térmica e hidrotérmica.…”

Section: Introductionunclassified

Synthesis and Characterization of Mesoporous Materials SBA-15 Obtained with Different Synthesis Conditions

Fernandes¹,

Santos²,

Souza³

et al. 2016

Rev. Virtual Quim.

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The mesoporous materials has received much attention due to their promising features in catalysis area, adsorption and ion exchange. Among these materials highlights the SBA-15 having a hexagonal structure, unidirectional, high thermal and hydrothermal stability and high average pore diameter. The synthesis of this material occurs in acidic medium using as organic P123 driver and TEOS as silica source. Despite using only an organic driver, other materials based on silica, such as KIT-6 using an alcohol such as codirecionador structure, reducing the aging time to 24 hours compared to SBA-15. This paper aims to synthesize the SBA-15 using Butanol (C 4 H 10 O) in the synthesis process in order to obtain a material in a shorter time and characterize it in order to evaluate the use of butanol synthesis through the materials obtained. Samples were synthesized according to Zhao et al. (1998) and using the modifications Butanol and characterized by XRD, TG / DTG, adsorption / desorption of nitrogen and SEM. The butanol synthesized material showed textural, structural and morphological characteristics similar to the standard sample, typical materials of SBA-15 type, even with a reduction of 24 hours of its synthesis. The materials synthesized with the use of alcohol, had thicker walls which gives the material a greater resistance. It was possible to shorten the synthesis of SBA-15 in 24 hours, yielding high quality materials, using Butanol during its synthesis.

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CO2 adsorption on Santa Barbara Amorphous-15 (SBA-15) and amine-modified Santa Barbara Amorphous-15 (SBA-15) with and without controlled microporosity

Cited by 81 publications

References 58 publications

Tetraethylenepentamine-modified MCM-41/silica gel with hierarchical mesoporous structure for CO2 capture

Tetraethylenepentamine-modified MCM-41/silica gel with hierarchical mesoporous structure for CO2 capture

Enhanced Adsorption of Carbon Dioxide from Simulated Biogas on PEI/MEA-Functionalized Silica

Synthesis and Characterization of Mesoporous Materials SBA-15 Obtained with Different Synthesis Conditions

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