Reverse microemulsion mediated sol–gel synthesis of lithium silicate nanoparticles under ambient conditions: Scope for CO2 sequestration

Khomane, Ramdas B.; Sharma, Bhagwati; Saha, Sujan; Kulkarni, Bhaskar D.

doi:10.1016/j.ces.2005.11.065

Cited by 57 publications

(47 citation statements)

References 14 publications

(10 reference statements)

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“…The microstructure and textural properties obtained through the surfactant-assisted hydrothermal synthesis route, suggests advantages with respect to the solid state reaction method. These pure and nano-crystalline Li 2 SiO 3 may be suitable to be used for certain applications such as CO 2 absorption [103][104][105]. Today, synthesis of lead-free piezoceramics is of strong interest when looking at a more environmentally friendly option for the fabrication of optical and acoustic devices such as optical wave-guiding and frequency doubling [116][117][118][119][120].…”

Section: Resultsmentioning

confidence: 99%

“…In general, Li 2 SiO 3 has been synthesized by the conventional solid-state reaction method, and only some chemical routes have been studied such as the sol-gel, microemulsion and combustion methods [103][104][105]. Similar to the case of other alkaline ceramics, it is complicated to prepare lithium ceramics with small particle sizes because of its tendency to sinter or to lose lithium through a sublimation process at high temperatures.…”

Section: Synthesis Of LI 2 Sio 3 Hollow Microspheres Via Surfactant-amentioning

confidence: 99%

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Synthesis of advanced ceramics by hydrothermal crystallization and modified related methods

Ortíz-Landeros¹,

Gómez-Yáñez²,

López-Juárez³

et al. 2012

J Adv Ceram

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Abstract:The present article aims to give a brief overview about the advantages of the hydrothermal crystallization method for the synthesis of advanced ceramics. Emphasis is given, not only on the conventional hydrothermal crystallization, but also on some of its variants; such as ultrasound-assisted, electrochemical-assisted, microwave-assisted and surfactant-assisted hydrothermal methods which open up new opportunities for the synthesis of ceramic materials with novel properties demanded for advanced applications. In the current work the synthesis of barium titanate (BaTiO 3 ), lithium metasilicate (Li 2 SiO 3 ) and sodium-potassium niobate (Na, K)NbO 3 powders are reported as cases of study.

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Section: Resultsmentioning

confidence: 99%

Section: Synthesis Of LI 2 Sio 3 Hollow Microspheres Via Surfactant-amentioning

confidence: 99%

Synthesis of advanced ceramics by hydrothermal crystallization and modified related methods

Ortíz-Landeros¹,

Gómez-Yáñez²,

López-Juárez³

et al. 2012

J Adv Ceram

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“…The mechanism for the destruction and reformation of the crystalline phase of the mixed metal oxides while capturing CO 2 by the formation of metal carbonates is proposed. When the CO 2 is removed, a decomposition of the metal carbonates takes place and the crystalline phase reforms [4,10,12,13,16,22,24,28,31,33]. The capture of carbon dioxide over mixed metal oxides that contain silicon dioxide can be expresses as follows.…”

Section: Mechanism For the Capture Of Carbon Dioxide By Mixed Metal Omentioning

confidence: 99%

“…Magnesium and calcium silicates have also been used to capture carbon dioxide [3,11] at pre-combustion conditions. Calcium zirconate has been used to capture carbon dioxide [12] from flue gases at temperatures above 600°C. Lithium oxide, the main metal oxide component in CO 2 adsorbents such as lithium silicate, aluminates and zirconates, has been investigated to capture carbon dioxide at higher temperatures.…”

Section: Introductionmentioning

confidence: 99%

The capture of carbon dioxide by transition metal aluminates, calcium aluminate, calcium zirconate, calcium silicate and lithium zirconate

Tilekar

Shinde

Kale

et al. 2011

Front. Chem. Sci. Eng.

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The capture of CO 2 by transition metal (Mn, Ni, Co and Zn) aluminates, calcium aluminate, calcium zirconate, calcium silicate and lithium zirconate was carried out at pre-and post-combustion temperatures. The prepared metal adsorbents were characterized by Xray diffraction (XRD), scanning electron microscope (SEM), surface area analysis and acidity/alkalinity measurements. The different experimental variables affecting the adsorbents ability to capture CO 2 , such as the mol ratio of metal ions, the pressure of CO 2 , the exposure time and the temperature of the adsorbent were also investigated. Calcium zirconate captured 13.85 wt-% CO 2 at 650°C and 2.5 atm and calcium silicate captured 14.31 wt-% at 650°C. Molecular sieves (13X) and carbon can only capture a negligible amount of CO 2 at high temperatures (300°C-650°C). However, the mixed metal oxides captured reasonable amount of CO 2 at these higher temperatures. In addition, calcium aluminate, calcium zirconate, calcium silicate and lithium zirconate adsorbents captured CO 2 at both pre and post-combustion temperatures. The trend for the amount of captured carbon dioxide over the adsorbents was calcium aluminate < lithium zirconate < calcium zirconate < calcium silicate.

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“…However, most of the time, a mixture of Li 2 SiO 3 , Li 2 Si 2 O 5 , Li 4 SiO 4 , and SiO 2 were obtained [13,15,[18][19][20][21]. On the other hand, the synthesis of nanocrystalline ceramic materials imposes a challenge on the traditional solid state synthesis methods which fail to offer a sufficiently narrow size distribution and desired homogeneity at the nanometer level [22]. However, the hydrothermal synthesis method has an advantage for the production of highly crystalline and pure nanoparticles [23].…”

Section: Introductionmentioning

confidence: 99%

Lithium metasilicate and lithium disilicate nanomaterials: optical properties and density functional theory calculations

et al. 2013

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UV-vis and photoluminescence spectra of the hydrothermally synthesized crystalline lithium metasilicate (Li 2 SiO 3 ) and lithium disilicate (Li 2 Si 2 O 5 ) nanomaterials are studied. The intensity of the bands in the emission spectra increases with increasing reaction time in both compounds. The electronic band structure along with density of states calculated by the density functional theory (DFT) method indicates that Li 2 SiO 3 and Li 2 Si 2 O 5 have an indirect energy band gap of 4.575 and 4.776 eV respectively. The optical properties, including the dielectric, absorption, reflectivity, and energy loss spectra of the compounds, are calculated by DFT method and analyzed based on the electronic structures.

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Reverse microemulsion mediated sol–gel synthesis of lithium silicate nanoparticles under ambient conditions: Scope for CO2 sequestration

Cited by 57 publications

References 14 publications

Synthesis of advanced ceramics by hydrothermal crystallization and modified related methods

Synthesis of advanced ceramics by hydrothermal crystallization and modified related methods

The capture of carbon dioxide by transition metal aluminates, calcium aluminate, calcium zirconate, calcium silicate and lithium zirconate

Lithium metasilicate and lithium disilicate nanomaterials: optical properties and density functional theory calculations

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