Capture of carbon dioxide by amine-impregnated as-synthesized MCM-41

Wei, Jianwen; Liao, Lei; Yu, Xiao; Zhang, Pei; Shi, Yao

doi:10.1016/s1001-0742(09)60289-8

Cited by 99 publications

(52 citation statements)

References 24 publications

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“…4b) for MSU-J support and TEPA-functionalized MSU-J were presented. The isotherms of all samples were typical type IV characteristic of mesoporous silica, with a well-defined step around p/p 0 = 0.6-0.9, characteristic of capillary condensation with uniform pores [7] indicating Table 1. The surface area and the pore volume decreased dramatically after TEPA impregnation, which obviously indicates that amino are mainly anchored onto the inner surface of MSU-J.…”

Section: Structure and Characteristic Of The As-made Adsorbentmentioning

confidence: 89%

“…Apart from the high energy input required to regenerate the adsorbent, the mentioned techniques also have other drawbacks such as solvent evaporation, equipment corrosion and high viscosity,in addition, the absorber easily degraded in oxygen [7,8]. The advantages of membrane separation process are energy efficient utilization, ease operation, but its limitations are difficult to large-scale and highly cost [9].…”

Section: Introductionmentioning

confidence: 99%

“…Ordered mesoporous silica MCM-41 [7,14], MCM-48 [15], SBA-15 [16,17], SBA-16 [18] and SBA-12 [19] have attracted much attention for the purpose of CO 2 capture and separation owing to the uniform and large pores, tunable pore sizes, high surface areas as well as a large number of highly dispersed active sites (silicon hydroxyl group) on the pore walls and surface. The hydroxyl groups are essential for surface modification because only the silanol can anchor the organic molecules to the silica surface to form the functional groups.…”

Section: Introductionmentioning

confidence: 99%

“…For CO 2 removal, mesostructured supports are functionalized with organic molecules containing basic amino groups, which act as specific sites for CO 2 capture by chemical adsorption. Wet impregnation of liquid organic amines into porous supports or the covalent grafting of amines to porous surfaces using silane coupling agents were employed to prepare the solid sorbents [7,22]. Xu et al [23] dispersed poly-ethylenimine into the channels of MCM-41, and it improved the amine efficiency for CO 2 adsorption enormously.…”

Section: Introductionmentioning

confidence: 99%

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CO2 capture of amino functionalized three-dimensional worm-hole mesostructured MSU-J silica

Wang

Dan

et al. 2014

J Porous Mater

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Tetraethylenepentamine (TEPA) was employed to functionalize the large-pore mesoporous silica (denoted MSU-J) with 3D worm-hole framework structures which was prepared through a supramolecular hydrogen-bonding assembly pathway from low-cost H 2 NCH(CH 3 )CH 2 [OCH 2 CH(CH 3 )] 33 NH 2 (D2000) as structure-directing porogens and tetraethylorthosilioate as the silica source for capturing CO 2 . The resultant adsorbents were characterized by FT-IR, Transmission electron microscopy (TEM), N 2 adsorption/desorption and thermogravimetric analysis. Textural properties, elemental analysis and TEM measurement of the samples showed a severe pore filling of MSU-J as TEPA loading was increased to 70 wt%. CO 2 adsorption isotherms measured at different temperatures revealed the optimal adsorption temperature is 25°C. The adsorption capacity of MSU-J with different TEPA loading contents was calculated. As a result, 50 wt% of TEPA supported on as-synthesized MSU-J achieved the highest capacity with the value of 164.3 mg/g under the conditions of 99.99 % CO 2 at 25°C and 0.1 MPa. Repeated adsorption/desorption cycles revealed that amine-impregnated materials was very efficient for less apparent decrease in CO 2 adsorption capacity even after 6 adsorption-regeneration cycles.

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Section: Structure and Characteristic Of The As-made Adsorbentmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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CO2 capture of amino functionalized three-dimensional worm-hole mesostructured MSU-J silica

Wang

Dan

et al. 2014

J Porous Mater

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“…Hydroxy groups on uncalcinated SBA-15 has a promoting effect on CO2 adsorption. Wei et al [18] impregnated MCM-41 with three kinds of amines, namely diethylenetriamine (DETA), triethylenetetramine (TETA), and 2-amino-2-methyl-1-propanol (AMP), and found that the sample impregnated by TETA showed the highest CO2 adsorption capacity. Su et al [19] prepared TEPA-modified commercial Y-type zeolite with and studied their characterizations and adsorption/desorption properties of CO2.…”

Section: Introductionmentioning

confidence: 99%

Promoting Effect of Inorganic Alkali on Carbon Dioxide Adsorption in Amine-Modified MCM-41

Teng¹,

Li²,

Xu³

et al. 2016

Preprint

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Three kinds of inorganic alkali are introduced into tetraethylenepentamine (TEPA)-and polyethyleneimine (PEI)-modified MCM-41 as the CO2 adsorbents. FT-IR and TGA are used to characterize the surface groups and the thermal stability of adsorbents. Chemical titration method is used to measure the alkali amounts of adsorbents. Thermo-gravimetric analysis with 10% CO2/90% N2 as the simulated flue gas is used to test the CO2 adsorption performance of adsorbents. The results show that all three kinds of inorganic alkali-containing adsorbents exhibit higher CO2 adsorption capability than traditional TEPA and PEI modified samples. Ca(OH)2 and PEI modified samples exhibit the highest adsorption capacity and recyclable property. The introduction of inorganic alkali changes the chemical adsorption mechanism between CO2 and adsorbent surface due to the increased hydroxyl groups. The CO2 adsorption capacities have a linear dependence relation with the alkali amounts of adsorbents, indicating that alkali amount is a critical factor for the exploration of novel adsorbents.

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Enhancement of Carbon Dioxide Capture by Amine‐Functionalized Multi‐Walled Carbon Nanotube

Khalili

Ghoreyshi

Jahanshahi

et al. 2013

CLEAN Soil Air Water

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In this study, crude multi‐walled carbon nanotubes (MWCNT) was functionalized by a two‐step process; first using strong mixed acids (H2SO4/HNO3) and then treatment with 1,3‐phenylenediamine (mPDA). The equilibrium adsorption of CO2 on pristine MWCNT and amine functionalized MWCNT (MWCNT‐NH2) were investigated. Experiments were preformed via application of volumetric method in a dual sorption vessel at temperature range of 298–318 K and pressures up to 40 bars. The results obtained indicated that the equilibrium uptake of CO2 increased after functionalizing of MWCNT. The increase in CO2 capture by MWCNT‐NH2 was attributed to the existence of great affinity between CO2 molecules and amine sites on this adsorbent at low pressures. The experimental data were analyzed by means of Freundlich and Langmuir adsorption isotherm models. The data obtained revealed a fast kinetics for the adsorption of CO2 in which most of adsorption occurred at initial period of adsorption experiments. This renders MWCNT as a suitable adsorbent for practical applications. Values of isosteric heat of adsorption were evaluated based on Clausius–Clapeyron equation. The results demonstrated that both chemisorption and physisorption played important role in CO2 adsorption on MWCNT‐NH2, whereas the physisorption process was dominant for CO2 adsorption on MWCNT.

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Capture of carbon dioxide by amine-impregnated as-synthesized MCM-41

Cited by 99 publications

References 24 publications

CO2 capture of amino functionalized three-dimensional worm-hole mesostructured MSU-J silica

CO2 capture of amino functionalized three-dimensional worm-hole mesostructured MSU-J silica

Promoting Effect of Inorganic Alkali on Carbon Dioxide Adsorption in Amine-Modified MCM-41

Enhancement of Carbon Dioxide Capture by Amine‐Functionalized Multi‐Walled Carbon Nanotube

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