Amine-modified ordered mesoporous silica: The effect of pore size on CO2 capture performance

Lin, Wang; Yao, Minyu; Hu, Xin; Hu, Gengshen; Lu, Ji-Qing; Luo, Ming; Fan, Maohong

doi:10.1016/j.apsusc.2014.10.135

Cited by 102 publications

(43 citation statements)

References 40 publications

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“…Noteworthy is that some of the oxide materials in their study contained 2D pore systems while others contained 3D pore systems. This finding was corroborated by a recent study by Fan et al, 34 who reported adsorption-breakthrough experiments on materials comprised of PEI at 50 wt % supported on mesoporous silica of varying pore size but similar pore volume. Here, breakthrough capacities were higher for the materials with the larger pore size, and qualitative differences in the shapes of the breakthrough curves of the materials with different pore sizes were observed.…”

Section: ■ Introductionsupporting

confidence: 91%

Probing the Role of Zr Addition versus Textural Properties in Enhancement of CO₂ Adsorption Performance in Silica/PEI Composite Sorbents

et al. 2015

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Polymeric amines such as poly(ethylenimine) (PEI) supported on mesoporous oxides are promising candidate adsorbents for CO2 capture processes. An important aspect to the design and optimization of these materials is a fundamental understanding of how the properties of the oxide support such as pore structure, particle morphology, and surface properties affect the efficiency of the guest polymer in its interactions with CO2. Previously, the efficiency of impregnated PEI to adsorb CO2 was shown to increase upon the addition of Zr as a surface modifier in SBA-15. However, the efficacy of this method to tune the adsorption performance has not been explored in materials of differing textural and morphological nature. Here, these issues are directly addressed via the preparation of an array of SBA-15 support materials with varying textural and morphological properties, as well as varying content of zirconium doped into the material. Zirconium is incorporated into the SBA-15 either during the synthesis of the SBA-15, or postsynthetically via deposition of Zr species onto pure-silica SBA-15. The method of Zr incorporation alters the textural and morphological properties of the parent SBA-15 in different ways. Importantly, the CO2 capacity of SBA-15 impregnated with PEI increases by a maximum of ∼60% with the quantity of doped Zr for a "standard" SBA-15 containing significant microporosity, while no increase in the CO2 capacity is observed upon Zr incorporation for an SBA-15 with reduced microporosity and a larger pore size, pore volume, and particle size. Finally, adsorbents supported on SBA-15 with controlled particle morphology show only modest increases in CO2 capacity upon inclusion of Zr to the silica framework. The data demonstrate that the textural and morphological properties of the support have a more significant impact on the ability of PEI to capture CO2 than the support surface composition.

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Section: ■ Introductionsupporting

confidence: 91%

Probing the Role of Zr Addition versus Textural Properties in Enhancement of CO₂ Adsorption Performance in Silica/PEI Composite Sorbents

et al. 2015

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“…CO 2 capture and storage is recognized as a major technology to reduce CO 2 emissions and combat climate change. It has been reported that amine-functionalized mesoporous materials can function as effective solid absorbents for CO 2 capture and separation 28 29 30 . Herein, CO 2 adsorption capacity of TEPA-modified MGC-1 and MGC-2 was investigated and compared on a thermogravimetric analyzer at the temperature of 75 °C.…”

Section: Resultsmentioning

confidence: 99%

Surfactant-assisted Nanocasting Route for Synthesis of Highly Ordered Mesoporous Graphitic Carbon and Its Application in CO2 Adsorption

Wang

Bai

Wang

et al. 2016

Sci Rep

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Highly ordered mesoporous graphitic carbon was synthesized from a simple surfactant-assisted nanocasting route, in which ordered mesoporous silica SBA-15 maintaining its triblock copolymer surfactant was used as a hard template and natural soybean oil (SBO) as a carbon precursor. The hydrophobic domain of the surfactant assisted SBO in infiltration into the template’s mesoporous channels. After the silica template was carbonized and removed, a higher yield of highly-ordered graphitic mesoporous carbon with rod-like morphology was obtained. Because of the improved structural ordering, the mesoporous carbon after amine modification could adsorb more CO2 compared with the amine-functionalized carbon prepared without the assistance of surfactant.

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“…where Q (mL/min) is the feed gas flow rate, (g) is the mass of the particles in the column, can be estimated from the slope of the breakthrough curves in the mass transfer zone [43]. In …”

Section: Co 2 Capture Capacity Of Mip Particlesmentioning

confidence: 99%

“…39 However, bulk polymerisation is not suitable for large-scale production, because the resulting 40 bulk polymer must be crushed, ground, and sieved to obtain particles of optimum size, which 41 is time-consuming, laborious, and expensive, as only 30-40% of the particles can be 42 recovered. In addition, the produced particles have irregular shape and sharp edges and are 43 prone to attrition [25]. Proper shape, size, and surface morphology of the particles are the key 44 factors for the applicability of adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Production of molecularly imprinted polymer particles with amide-decorated cavities for CO 2 capture using membrane emulsification/suspension polymerisation

Nabavi

Vladisavljević

Wicaksono

et al. 2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Amine-modified ordered mesoporous silica: The effect of pore size on CO2 capture performance

Cited by 102 publications

References 40 publications

Probing the Role of Zr Addition versus Textural Properties in Enhancement of CO₂ Adsorption Performance in Silica/PEI Composite Sorbents

Probing the Role of Zr Addition versus Textural Properties in Enhancement of CO₂ Adsorption Performance in Silica/PEI Composite Sorbents

Surfactant-assisted Nanocasting Route for Synthesis of Highly Ordered Mesoporous Graphitic Carbon and Its Application in CO2 Adsorption

Production of molecularly imprinted polymer particles with amide-decorated cavities for CO 2 capture using membrane emulsification/suspension polymerisation

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Amine-modified ordered mesoporous silica: The effect of pore size on CO2 capture performance

Cited by 102 publications

References 40 publications

Probing the Role of Zr Addition versus Textural Properties in Enhancement of CO2 Adsorption Performance in Silica/PEI Composite Sorbents

Probing the Role of Zr Addition versus Textural Properties in Enhancement of CO2 Adsorption Performance in Silica/PEI Composite Sorbents

Surfactant-assisted Nanocasting Route for Synthesis of Highly Ordered Mesoporous Graphitic Carbon and Its Application in CO2 Adsorption

Production of molecularly imprinted polymer particles with amide-decorated cavities for CO 2 capture using membrane emulsification/suspension polymerisation

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Product

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Probing the Role of Zr Addition versus Textural Properties in Enhancement of CO₂ Adsorption Performance in Silica/PEI Composite Sorbents

Probing the Role of Zr Addition versus Textural Properties in Enhancement of CO₂ Adsorption Performance in Silica/PEI Composite Sorbents