Combustion synthesis and characterization of Sr3Al2O6

Barbosa, Willams Teles; Nascimento, Imarally V.S.R.; Carrodeguas, Raúl García; Fook, Marcus Vinícius Lia; Rodríguez, Miguel Á.

doi:10.1111/ijac.13106

Cited by 5 publications

(2 citation statements)

References 27 publications

(33 reference statements)

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“…Surface area measurements were performed using a single point isotherm technique (Monosorb Surface Area MS-13, Quantachrome Instr., USA) and applying the Brunauer, Emmett, and Teller (BET) model. The equivalent particle size was calculated based on the BET surface area as follows [21]:…”

Section: Methodsmentioning

confidence: 99%

Impact of fuel quantity on luminescence properties of Sr3Al2O6:Eu by combustion synthesis

et al. 2023

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The photoluminescent behavior of Eu-doped Sr 3 Al 2 O 6 obtained by highly efficient solution combustion synthesis is reported. In order to understand the influence of the fuel on the synthesis, the stoichiometric quantity and an excess of fuel were evaluated. By adjusting the amount of fuel, different luminescence responses were obtained, allowing europium cations incorporation into the Sr 3 Al 2 O 6 lattice to serve as effective luminescence activators in such a short time during the rapid combustion synthesis process. The higher amount of fuel in the presence of the oxidizing agent produced Sr 3 Al 2 O 6 :Eu particles with higher phosphorescence brightness, owing to the increase of the reduction process from Eu 3+ to Eu 2+ . The synthesized phosphor showed an intense band emission centered at 515 nm and could be excited over a broad spectral range in the UV-visible region. Particles having nanostructured flaketype morphology were obtained, which was considered a micro-nanofunctional candidate for practical applications.

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Section: Methodsmentioning

confidence: 99%

Impact of fuel quantity on luminescence properties of Sr3Al2O6:Eu by combustion synthesis

et al. 2023

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“…X‐ray diffraction patterns of samples of the Sr 3 Al 2 O 6 and SrAl 2 O 4 identified phases. Reprinted with the permission of John Wiley and Sons 71 …”

Section: Supported Sromentioning

confidence: 99%

A review of the use of SrO in catalysts for biodiesel production

Tavizón‐Pozos,

Cruz‐Aburto

2023

Biofuels Bioprod Bioref

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SrO has attracted attention for its use as a heterogeneous catalyst in producing biodiesel from transesterification owing to its high alkaline character and low solubility in methanol. In studies conducted in this decade, reaction conditions such as the methanol–oil molar ratio, reaction time, catalyst loading and temperature have been optimized in these systems. Furthermore, several works have been carried out to improve the physicochemical properties and increase the leaching resistance of this material. Thus, the new trends in using SrO in transesterification reactions are that this oxide should be supported or combined with Al2O3, TiO2, ZrO2, or Fe2O3, CaO, metal–organic frameworks, zeolites or La2O3. It has been observed that strontium can form mixed crystalline phases with these oxides by increasing the (M2+O2−) pairs and Lewis basicity of the oxygens, resulting in increased basicity and catalytic activity. Moreover, the transition metal oxides may provide Lewis acidity. Hence, these strontium‐containing catalytic systems have demonstrated a bifunctionality that can perform esterification and transesterification reactions at the same time. In addition, the combination of these oxides decreases the leaching of the catalyst. Other materials such as metal–organic frameworks, zeolites, and La2O3 have been studied as SrO supports, showing that they can be used in oil transesterification reactions.

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