Spectroscopic, structural and textural properties of CaO and CaO–SiO2 materials synthesized by sol–gel with different acid catalysts

García, José Ricardo Palomares; López, T.; Álvarez, M. C. Díaz; Aguilar, D.H.; Quintana, P.

doi:10.1016/j.jnoncrysol.2007.07.074

Cited by 44 publications

(25 citation statements)

References 21 publications

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“…The XRD pattern of the monolith MonoCa‐1.0‐23.5‐NO 3 clearly indicates the formation of CaCO 3 (peaks 1 for the calcite and peaks 2 for the aragonite phase in Figure 5) and Ca(OH) 2 (peaks 3 in Figure 5). 33–35 This result is confirmed by IR spectroscopy (see Supporting Information, Figure S5) and by energy‐dispersive (EDX) analysis showing the presence of Si, Ca, and O (see Supporting Information, Figure S6 a). Carbonate is probably formed during the decomposition of the copolymer and stabilized by interaction with Ca 2+ ions.…”

Section: Resultsmentioning

confidence: 53%

Co²⁺@Mesoporous Silica Monoliths: Tailor‐Made Nanoreactors for Confined Soft Chemistry

Delahaye

Moulin

Aouadi

et al. 2015

Chemistry A European J

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Mesoporous silica monoliths with various ordered nanostructures containing transition metal M(2+) cations in variable amounts were elaborated and studied. A phase diagram depicting the different phases as a function of the M(2+) salt/tetramethyl orthosilicate (TMOS) and surfactant P123/TMOS ratios was established. Thermal treatment resulted in mesoporous monoliths containing isolated, accessible M(2+) species or condensed metal oxides, hydroxides, and salts, depending on the strength of the interactions between the metal species and the ethylene oxide units of P123. The ordered mesoporosity of the monoliths containing accessible M(2+) ions was used as a nanoreactor for the elaboration of various transition metal compounds (Prussian blue analogues, Hofmann compounds, metal-organic frameworks), and this opens the way to the elaboration of a large range of nanoparticles of multifunctional materials.

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Section: Resultsmentioning

confidence: 53%

Co²⁺@Mesoporous Silica Monoliths: Tailor‐Made Nanoreactors for Confined Soft Chemistry

Delahaye

Moulin

Aouadi

et al. 2015

Chemistry A European J

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“…That work revealed that sulfated zirconia was the most active for esterification. Later, García et al [91] investigated the activity of sulfated zirconia for soybean oil transesterification. That group found that the catalyst preparation method had a significant effect on the resulting catalyst activity.…”

Section: Sulfated Zirconia Based Catalystsmentioning

confidence: 99%

Advancements in Heterogeneous Catalysis for Biodiesel Synthesis

et al. 2010

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Heterogeneous catalysts are promising for the transesterification reaction of vegetable oils to produce biodiesel and have been studied intensively over the last decade. Unlike the homogeneous catalysts, heterogeneous catalysts can be easily separated from reaction mixture and reused for many times. They are environmentally benign and could be easily operated in continuous processes. This review classifies the solid catalysts into two categories based on their catalytic temperature, i.e. high temperature catalysts and low temperature catalysts. The nature of the catalysts can be specified into solid bases and solid acids. Three aspects, catalyst activity, catalyst life and oil flexibility, will be reviewed. Two kinds of heterogeneous catalysts, reported by IFP Inc. and by WSU, respectively, show a high catalytic activity, long catalyst life and low leaching of catalyst components. These two catalysts also show ability to simultaneously catalyze esterification and transesterification, and can be used in half-refined or crude oil system which provide a potential for greatly decrease the feedstock cost.

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“…After the calcination process, a new peak appeared at 3630 cm −1 in Fig. 1b, evidencing the formation of a basic OH group that attached to the calcium atoms [19]. The 111, 200, and 220 reflections at 32.32°, 37.89°, 53.94° (2θ), respectively, confirmed the presence of calcium oxide.…”

Section: Structural Transformation and Identificationmentioning

confidence: 78%

Structural transformation of oyster, hard clam, and sea urchin shells after calcination and their antibacterial activity against foodborne microorganisms

Chen

Lin

et al. 2015

Fish Sci

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Spectroscopic, structural and textural properties of CaO and CaO–SiO2 materials synthesized by sol–gel with different acid catalysts

Cited by 44 publications

References 21 publications

Co²⁺@Mesoporous Silica Monoliths: Tailor‐Made Nanoreactors for Confined Soft Chemistry

Co²⁺@Mesoporous Silica Monoliths: Tailor‐Made Nanoreactors for Confined Soft Chemistry

Advancements in Heterogeneous Catalysis for Biodiesel Synthesis

Structural transformation of oyster, hard clam, and sea urchin shells after calcination and their antibacterial activity against foodborne microorganisms

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Spectroscopic, structural and textural properties of CaO and CaO–SiO2 materials synthesized by sol–gel with different acid catalysts

Cited by 44 publications

References 21 publications

Co2+@Mesoporous Silica Monoliths: Tailor‐Made Nanoreactors for Confined Soft Chemistry

Co2+@Mesoporous Silica Monoliths: Tailor‐Made Nanoreactors for Confined Soft Chemistry

Advancements in Heterogeneous Catalysis for Biodiesel Synthesis

Structural transformation of oyster, hard clam, and sea urchin shells after calcination and their antibacterial activity against foodborne microorganisms

Contact Info

Product

Resources

About

Co²⁺@Mesoporous Silica Monoliths: Tailor‐Made Nanoreactors for Confined Soft Chemistry

Co²⁺@Mesoporous Silica Monoliths: Tailor‐Made Nanoreactors for Confined Soft Chemistry