2018
DOI: 10.1016/j.jcis.2017.09.003
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Iron-substituted cubic silsesquioxane pillared clays: Synthesis, characterization and acid catalytic activity

Abstract: Novel pillared structures were developed from the intercalation of iron-substituted cubic silsesquioxanes in a sodium and an acid-activated montmorillonite nanoclay and evaluated as acid catalysts. Octameric cubic oligosiloxanes were formed upon controlled hydrolytic polycondensation of the corresponding monomer (a diamino-alkoxysilane) and reacted with iron cations to form complexes that were intercalated within the layered nanoclay matrices. Upon calcination iron oxide nanoparticles are formed which are loca… Show more

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Cited by 16 publications
(12 citation statements)
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“…To synthesize POSS, the controlled hydrolysis of 3-(2-aminoethylamino)-propyltrimethoxysilane in an ethanol/water 14:1 v/v solution was performed. Simultaneously 30 mL of an aqueous FeCl 2.4 H 2 O (0.1 mol/L) solution was prepared and added to 20 mL of the above solution; incubation of the mixture for 24 h engendered the formation of iron decorated cage-like species [24,44,45].…”
Section: Synthesis Of Polyhedral Oligomeric Silsesquioxanes (Poss)mentioning
confidence: 99%
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“…To synthesize POSS, the controlled hydrolysis of 3-(2-aminoethylamino)-propyltrimethoxysilane in an ethanol/water 14:1 v/v solution was performed. Simultaneously 30 mL of an aqueous FeCl 2.4 H 2 O (0.1 mol/L) solution was prepared and added to 20 mL of the above solution; incubation of the mixture for 24 h engendered the formation of iron decorated cage-like species [24,44,45].…”
Section: Synthesis Of Polyhedral Oligomeric Silsesquioxanes (Poss)mentioning
confidence: 99%
“…POSS are made of a core-shell three-dimensional (3D) cage-like structure that can be fabricated through hydrolytic condensation reactions of organosilicon monomers RSiOH 3 [22,23]. If properly functioned, POSS can be bonded with metal ions to form metal substituted silsesquioxanes [24,25].…”
Section: Introductionmentioning
confidence: 99%
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“…Recently, PILCs have been dened as porous materials of the 21 st century and have attracted much attention from both academic and industrial research point of view. [68][69][70][71] Their high specic surface area, large micropore volume, upper acid site concentration, increased hydrophobicity and the increase in the density of sorption sites make them an excellent adsorbent and catalyst for removal of pollutants in wastewater. 4,71 The removal of contaminants present in wastewater streams generated by various industrial processes has emerged as a signicant concern during past decade.…”
Section: Overviewmentioning
confidence: 99%