2018
DOI: 10.1039/c8ra06257a
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Synthesis and characterization of amorphous precipitated silica from alkaline dissolution of olivine

Abstract: The high worldwide demand for amorphous precipitated silica (APS) materials, millions of tons worth billions of dollars, makes it worthwhile to further expand the techniques for synthesizing new, cheap, and environmentally friendly resources.

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Cited by 29 publications
(19 citation statements)
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“…This is appropriate with the theory that the solubility rate is directly proportional to the temperature [29]. These results are consistent with the studies that have extracted silica from olivine with a basic solution, that the higher the temperature of the silica extraction results, the higher the magnesium content increase in residues [28]. Fig.…”
Section: Characterization Of Ferronickel Slag Residues After Leachingsupporting
confidence: 90%
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“…This is appropriate with the theory that the solubility rate is directly proportional to the temperature [29]. These results are consistent with the studies that have extracted silica from olivine with a basic solution, that the higher the temperature of the silica extraction results, the higher the magnesium content increase in residues [28]. Fig.…”
Section: Characterization Of Ferronickel Slag Residues After Leachingsupporting
confidence: 90%
“…Reaction 1 shows the formation of sodium silicate solution (Na 2 SiO 3 ) in the filtrate in the leaching process with NaOH while the solid magnesium hydroxide (Mg(OH) 2 ) separated on the residue subsequently [28].…”
Section: Procedures For Conducting the Experimentsmentioning
confidence: 99%
“…Amorphous silica can be used in several industrial sectors, including the reinforcement of elastomer products like tires, rubber goods, and drug delivery systems; rubber production, pesticides, paper, catalyst support, and chemical sensors. 32 The serpentinite can be used as a source of silica as reported by Fedoročková et al 4 Silica is the insoluble residue of the acidic dissolution of this rock. Serpentinite with high lizardite content, obtained from a mining industry residue, was used to produce amorphous silica with high purity.…”
Section: Source Of Silica and Magnesiummentioning
confidence: 95%
“…The leaching generates a soluble magnesium salt, which accumulates in solution and can be separated from the insoluble residue and further refined. 4,32 The most used leaching agent is hydrochloric acid, however, other inorganic and organic acids can be used. The products SiO 2 and Mg 2+ salts have different applications, as illustrated in Figure 8.…”
Section: Source Of Silica and Magnesiummentioning
confidence: 99%
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