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Kato, Masahiro; Yoshikawa, Sawako; Nakagawa, Kazuaki

doi:10.1023/a:1015338808533

Cited by 242 publications

(126 citation statements)

References 6 publications

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“…Among various metal oxides, lithiumbased materials were once considered as the effective CO 2 adsorbents because of their high adsorption capacity, but the existence of serious diffusion resistance hindered their industrial application (Kato et al, 2002;Xiong et al, 2003;Venegas et al, 2007;Iwan et al, 2009). The calciumbased adsorbents possessing high adsorption capacity, long-term durability, fast adsorption/desorption kinetic, good mechanical strength, wide availability and low cost in natural minerals have been widely studied for CO 2 capture (Huang et al, 2010).…”

Section: Other Adsorbentsmentioning

confidence: 99%

A Review of CO2 Capture by Absorption and Adsorption

Huang

Tan

2012

Aerosol Air Qual. Res.

1,457

875

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Global warming resulting from the emission of greenhouse gases, especially CO 2 , has become a widespread concern in the recent years. Though various CO 2 capture technologies have been proposed, chemical absorption and adsorption are currently believed to be the most suitable ones for post-combustion power plants. The operation of the chemical absorption process is reviewed in this work, together with the use of absorbents, such as the ionic liquid, alkanolamines and their blended aqueous solutions. The major concerns for this technology, including CO 2 capture efficiency, absorption rate, energy required in regeneration, and volume of absorber, are addressed. For adsorption, in addition to physical adsorbents, various mesoporous solid adsorbents impregnated with polyamines and grafted with aminosilanes are reviewed in this work. The major concerns for selection of adsorbent, including cost, adsorption rate, CO 2 adsorption capacity, and thermal stability, are compared and discussed. More effective and less energy-consuming regeneration techniques for CO 2 -loaded adsorbents are also proposed. Future works for both absorption and adsorption are suggested.

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Section: Other Adsorbentsmentioning

confidence: 99%

A Review of CO2 Capture by Absorption and Adsorption

Huang

Tan

2012

Aerosol Air Qual. Res.

1,457

875

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“…Experimentally, Li 4 SiO 4 and Li 2 SiO 3 were synthesized by mixing Li 2 CO 3 and SiO 2 with 2:1 and 1:1 molar ratio and were heat treated at a high temperature. 47,56 Therefore, the experimental samples may not be exactly the perfect crystalline Li 4 (2), the dependence of the chemical potential μ(T,P) on temperature and the CO 2 pressure P CO2 is shown in Fig. 10(b).…”

Section: Capabilities Of Co 2 Capturementioning

confidence: 99%

Density functional theory study of the structural, electronic, lattice dynamical, and thermodynamic properties of Li4SiO4and its capability for CO
Duan
¹
,
Parliński
²

2011
Phys. Rev. B
65
4
56
0
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The structural, electronic, lattice dynamical, optical, thermodynamic, and CO 2 capture properties of monoclinic and triclinic phases of Li 4 SiO 4 are investigated by combining density functional theory with phonon lattice dynamics calculations. We found that these two phases have some similarities in their bulk and thermodynamic properties. The calculated bulk modulus and the cohesive energies of these two phases are close to each other. Although both of them are insulators, the monoclinic phase of Li 4 SiO 4 has a direct band gap of 5.24 eV while the triclinic Li 4 SiO 4 phase has an indirect band gap of 4.98 eV. In both phases of Li 4 SiO 4 , the s orbital of O mainly contributes to the lower-energy second valence band (VB 2 ) and the p orbitals contribute to the fist valence band (VB 1 ) and the conduction bands (CBs). The s orbital of Si mainly contributes to the lower portions of the VB 1 and VB 2 , and Si p orbitals mainly contribute to the higher portions of the VB 1 and VB 2 . The s and p orbitals of Li contribute to both VBs and to CBs, and Li p orbitals have a higher contribution than the Li s orbital. There is possibly a phonon soft mode existing in triclinic γ -Li 4 SiO 4 ; in the monoclinic Li 4 SiO 4 , there are three phonon soft modes, which correspond to the one type of Li disordered over a few sites. Their LO-TO splitting indicates that both phases of Li 4 SiO 4 are polar anisotropic materials. The calculated infrared absorption spectra for LO and TO modes are different for these two phases of Li 4 SiO 4 . The calculated relationships of the chemical potential versus temperature and CO 2 pressure for reaction of Li 4 SiO 4 with CO 2 shows that Li 4 SiO 4 could be a good candidate for a high-temperature CO 2 sorbent while used for postcombustion capture technology.

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“…Carbon dioxide (CO 2 ) has been regarded as one of the most important greenhouse gases that contributes to the effects of global warming and climate change [1]. Fossil fuel power plants are responsible for >85% of the worldwide electrical energy demand [2].…”

Section: Introductionmentioning

confidence: 99%

Environmental Benign Synthesis of Lithium Silicates and Mg-Al Layered Double Hydroxide from Vermiculite Mineral for CO2 Capture

Zhou

Louis

et al. 2017

Catalysts

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This research introduces a completely new environmental benign synthesis route for obtaining two kinds of inter-mediate and high temperature CO 2 sorbents, Mg-Al layered double hydroxide (LDH) and Li 4 SiO 4 , from vermiculite. The mineral vermiculite was leached with acid, from which the obtained SiO 2 was used for the synthesis of Li 4 SiO 4 and the leaching waste water was used for the synthesis of Mg-Al LDH. Therefore, no waste was produced during the whole process. Both Li 4 SiO 4 and Mg-Al LDH sorbents were carefully characterized using XRD, SEM, and BET analyses. The CO 2 capturing performance of these two sorbents was comprehensively evaluated. The influence of the Li/Si ratio, calcination temperature, calcination time, and sorption temperature on the CO 2 sorption capacity of Li 4 SiO 4 , and the sorption temperature on the CO 2 sorption capacity of LDH, were investigated. The optimal leaching acid concentration for vermiculite and the CO 2 sorption/desorption cycling performance of both the Li 4 SiO 4 and Mg-Al LDH sorbents were determined. In sum, this demonstrated a unique and environment-friendly scheme for obtaining two CO 2 sorbents from cheap raw materials, and this idea is applicable to the efficient utilization of other minerals.

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Untitled

Cited by 242 publications

References 6 publications

A Review of CO2 Capture by Absorption and Adsorption

A Review of CO2 Capture by Absorption and Adsorption

Density functional theory study of the structural, electronic, lattice dynamical, and thermodynamic properties of Li4SiO4and its capability for CO
Duan
¹
,
Parliński
²

2011
Phys. Rev. B
65
4
56
0
View full text Add to dashboard Cite

Environmental Benign Synthesis of Lithium Silicates and Mg-Al Layered Double Hydroxide from Vermiculite Mineral for CO2 Capture

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Untitled

Cited by 242 publications

References 6 publications

A Review of CO2 Capture by Absorption and Adsorption

A Review of CO2 Capture by Absorption and Adsorption

Density functional theory study of the structural, electronic, lattice dynamical, and thermodynamic properties of Li4SiO4and its capability for CODuan1, Parliński2 2011Phys. Rev. B654560View full textAdd to dashboardCite

Environmental Benign Synthesis of Lithium Silicates and Mg-Al Layered Double Hydroxide from Vermiculite Mineral for CO2 Capture

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Product

Resources

About

Density functional theory study of the structural, electronic, lattice dynamical, and thermodynamic properties of Li4SiO4and its capability for CO
Duan
¹
,
Parliński
²

2011
Phys. Rev. B
65
4
56
0
View full text Add to dashboard Cite