Physico-chemical characterization and thermal analysis data of alumina waste from Bayer process

Yoshida, María Irene; Silva, V. R.; Pinto, Plínio C. C.; Sant’Anna, Sávio Stefanini; Silva, M. C.; Carvalho, C. F.

doi:10.1007/s10973-011-1830-0

Cited by 6 publications

(5 citation statements)

References 15 publications

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“…2. The last event was ascribed to the further dehydroxylation of the c-Al 2 O 3 and the formation of d- [39][40][41][42].…”

Section: Resultsmentioning

confidence: 99%

Thermal study in Eu3+-doped boehmite nanofibers and luminescence properties of the corresponding Eu3+:Al2O3

Liu

et al. 2014

J Therm Anal Calorim

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Eu 3? -doped boehmite nanofiber materials with different Eu 3? concentrations were synthesized without any surfactant, and followed by a series of characterizations. It was found that the boehmite nanofibers became coarser with the increase of Eu 3? concentration, which resulted in a gradual decrease of their specific surface areas. Moreover, the thermal stability of the boehmite nanofibers was studied by thermogravimetry-differential scanning calorimetry. All materials showed the phase transition from c-Al 2 O 3 to other forms. Yet the transition temperature was increased with the increase of Eu 3? concentration. The Eu 3? -doped boehmite nanofibers with the maximum Eu 3? concentrations showed the best thermal stability. Photoluminescence spectra showed that the 2 mol% of doping concentration of Eu 3? ions in Eu 3? :-Al 2 O 3 nanofiber was optimum.

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“…2. The last event was ascribed to the further dehydroxylation of the c-Al 2 O 3 and the formation of d- [39][40][41][42].…”

Section: Resultsmentioning

confidence: 99%

Thermal study in Eu3+-doped boehmite nanofibers and luminescence properties of the corresponding Eu3+:Al2O3

Liu

et al. 2014

J Therm Anal Calorim

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“…Depending on the nature of the filler, the overall cost of the final foam may be reduced [9,10]. Among the commonly used inorganic loads, silica (SiO 2 ) is recognized as an effective flame retardant filler [14,15]. Several works in the scientific literature have reported studies about the behavior and the mechanisms of SiO 2 action as a flame retardant in polymers [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Polyurethane foams based on modified tung oil and reinforced with rice husk ash I: Synthesis and physical chemical characterization

et al. 2013

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“…The following operating conditions were selected: voltage of 15 kV tube (Na-Sc) and 50 kV (Ti-U) with current in the tube 188 and 37 μA, respectively; in vacuum and detector Si(Li) cooled with liquid nitrogen. The quantitative method used for counting of hydroxil groups was the acetylation of a known mass sample with acetic anhydride in excess, in the presence of pyridine as solvent and imidazole as catalyst [21] . The Figure 4 shows the acetylation reaction of hydroxyl containing minerals.…”

Section: Chemical and Physical Characterization Of Steatitementioning

confidence: 99%

Synthesis of flexible polyurethane foams by the partial substitution of polyol by steatite

et al. 2018

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This work describes the synthesis of composites steatite/flexible polyurethane by replacing 4.5 wt. % of polyol with steatite rock powder. We evaluated two mechanical properties of composites (comfort factor and support factor) for various formulations based on a fractional factorial design. The new synthesized composites showed higher support factor, greater comfort factor, and lower cost, compared to conventional flexible polyurethane foams. There is not a significant change in the chemical composition of the foams, due to substitution of 4.5 wt. % polyol by steatite. However, there was a decrease in cell size and greater interaction between the hard segments of the composite.

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Physico-chemical characterization and thermal analysis data of alumina waste from Bayer process

Cited by 6 publications

References 15 publications

Thermal study in Eu3+-doped boehmite nanofibers and luminescence properties of the corresponding Eu3+:Al2O3

Thermal study in Eu3+-doped boehmite nanofibers and luminescence properties of the corresponding Eu3+:Al2O3

Polyurethane foams based on modified tung oil and reinforced with rice husk ash I: Synthesis and physical chemical characterization

Synthesis of flexible polyurethane foams by the partial substitution of polyol by steatite

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