Solid-phase extraction of metal ions from fuel ethanol with a nanostructured adsorbent

Soares, Isaac V.; Vieira, Evanice Menezes Marçal; Carmo, Devaney Ribeiro do; Filho, Newton Luiz Dias

doi:10.1016/j.microc.2013.03.001

Cited by 14 publications

(2 citation statements)

References 28 publications

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“…From the data of Fig. 9B-D it was possible to apply three kinetics models, [44][45][46] three isotherm models 44,47 and thermodynamic parameters, 48 respectively.…”

Section: Study Of Immobilizationmentioning

confidence: 99%

Syntheses and catalytic activities of new metallodendritic catalysts

et al. 2016

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“…From the data of Fig. 9B-D it was possible to apply three kinetics models, [44][45][46] three isotherm models 44,47 and thermodynamic parameters, 48 respectively.…”

Section: Study Of Immobilizationmentioning

confidence: 99%

Syntheses and catalytic activities of new metallodendritic catalysts

et al. 2016

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“…An oligomer is known as a molecule of intermediate relative molecular mass, the structure of which essentially comprises a small plurality of units derived, actually or conceptually, from molecules of lower relative molecular mass . Recently, extensive research has been made into polyhedral oligomeric silsesquioxane (POSS) due to its multidisciplinary applications such as in column chromatography, adsorption, separation and preconcentration and heterogeneous catalysis . POSS are nanoplatforms with one to eight reactive or nonreactive organofunctional groups (R) anchored to the eight possible vertices of the cubic silsesquioxane.…”

mentioning

confidence: 99%

Synthesis, characterization and catalytic application of a new organometallic oligomer based on polyhedral oligomeric silsesquioxane

Vieira

Silva

Furlani

et al. 2017

Applied Organom Chemis

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Although homogeneous catalysts provide high performance and selectivity, the difficulty of separation and recycling of these catalysts has bothered the scientific community worldwide. Therefore, the demand for heterogeneous catalysts that possess the advantages of homogeneous ones, with ease of separation and recyclability remains a topic of major impact. The oligomeric catalyst synthesized in this work was characterized using elemental analysis, Fourier transform infrared, 13 C NMR, 29 Si NMR and energy-dispersive X-ray spectroscopies, X-ray diffraction, thermogravimetric analysis, scanning electron microscopy and Brunauer-Emmett-Teller analysis and compared to its homogeneous counterpart [W(CO) 3 Br 2 (ATC)] in the epoxidation of 1-octene, cyclooctene, (S)-limonene, cis-3-hexen-1-ol, trans-3hexen-1-ol and styrene. The results showed that the percentage conversion for the homogeneous species [W(CO) 3 Br 2 (ATC)] was slightly higher than for the oligomeric catalyst (POSS-ATC-[W(CO) 3 Br 2 ]). Furthermore, the selectivity for epoxide of the oligomeric catalyst was greater than that of the homogeneous catalyst by about 25% when (S)-limonene was used. Great conversions (yields) of products were obtained with a wide range of substrates and the catalyst was recycled many times without any substantial loss of its catalytic activity.

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