Sorption and desorption of organic compounds by synthetic polymeric sorbents

Hradil, J.; Švec, František; Podlesnyuk, V. V.; Marutovskii, R. M.; Fridman, L. E.; Клименко, Н. А.

doi:10.1021/ie00056a039

Cited by 21 publications

(10 citation statements)

References 2 publications

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“…[7] These materials also have great importance as adsorbents in numerous applications including the recovery of precious metals, [8] the separation of biomolecules [9] and the adsorption of organic compounds. [10] The porous polymers that support expensive catalysts (noble metals) or contain adsorbates must be recovered and separated after use. However, it is often very difficult to achieve a selective separation of the support/adsorbent from the reaction medium (liquid) due to the presence of other solid products.…”

Section: Introductionmentioning

confidence: 99%

Templated Synthesis of Mesoporous Superparamagnetic Polymers

Fuertes

Sevilla

Álvarez

et al. 2007

Adv Funct Materials

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We present a novel synthetic strategy for fabricating superparamagnetic nanoparticles randomly dispersed in a mesoporous polymeric matrix. This method is based on the use of mesoporous silica materials as templates. The procedure used to obtain these mesoporous magnetic polymers consisted in: a) generating iron oxide ferrite magnetic nanoparticles (FMNP) of size ∼ 7–8 nm within the pores of the silica, b) loading the porosity of the silica/FMNP composite with a polymer (Polydivinylbenzene), c) selectively removing the silica framework from the resulting silica/FMNP/polymer composite. Such magnetic porous polymeric materials exhibit large surface areas (up to 630 m2 g–1), high pore volumes (up to 0.73 cm3 g–1) and a porosity made up of mesopores. In this way, it is possible to obtain superparamagnetic mesoporous hybrid nanocomposites that are easily manipulated by an external magnetic field and display different magnetic behaviours depending on the textural properties of the template employed.

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Section: Introductionmentioning

confidence: 99%

Templated Synthesis of Mesoporous Superparamagnetic Polymers

Fuertes

Sevilla

Álvarez

et al. 2007

Adv Funct Materials

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“…Recentemente, copolímeros reticulados, com elevada área específica, à base de metacrilatos, têm sido utilizados como adsorventes em meio aquoso, por apresentarem caráter hidrofílico devido à presença de unidades polares em suas cadeias poliméricas [6,7] . As indústrias do setor petrolífero têm destinado atenção especial às atividades de produção em áreas off-shore onde uma quantidade significativa de água é co-produzida durante as etapas de exploração e produção do petróleo.…”

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Influência das condições reacionais nas características de copolímeros de metacrilato de metila e divinilbenzeno obtidos por polimerização em suspensão

2004

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Resumo: Foram sintetizados copolímeros esféricos e porosos à base de metacrilato de metila e divinilbenzeno através de polimerização em suspensão aquosa utilizando metil-etil-cetona (MEK) e ciclo-hexano (CH) como diluentes. Diferentes estruturas morfológicas foram obtidas através da modificação dos parâmetros reacionais tais como teor de divinilbenzeno e razão MEK/CH. Os copolímeros foram caracterizados por porosimetria de mercúrio, análise de área específica, densidade aparente e microscopia ótica. Foram obtidas estruturas macroporosas com os teores mais altos do DVB e do diluente não-solvatante (CH).Palavras-chave: Copolímeros metacrilato de metila-divinilbenzeno, estrutura morfológica, caracterização. Influence from the Reaction Conditions on the Characteristics of Methyl Methacrylate-Divinylbenzene Copolymers obtained by Suspension PolymerizationAbstract: Spherical and porous copolymers based on methyl methacrylate and divinylbenzene were synthesized by aqueous suspension polymerization using methyl-ethyl-ketone (MEK) and cyclohexane (CH) as diluents. Different morphological structures were obtained by modifying the reaction parameters, such as divinylbenzene content and MEK/CH ratio. The copolymers were characterized by several techniques: mercury porosimetry, specific superficial area analyzer, apparent density and optical microcopy. Macroporous structures were obtained when using high content of DVB and of nonsolvatant diluent (CH).

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“…Traditional polymeric adsorbents are usually based on macroporous styrene–divinylbenzene copolymers (e.g., Amberlite XAD‐2 and XAD‐4, Rohm and Haas Co.) and poly(meth)acrylates (e.g., Amberlite XAD‐7, Rohm and Haas Co.). The former adsorbs organic compounds from aqueous solutions through hydrophobic interactions due to van der Waal's forces between the highly hydrophobic surface of the adsorbents and hydrophobic sites of the solutes6–9; the latter adsorbs solutes containing hydrogen bond donors from nonpolar organic solvents through hydrogen bonding 10–12. The low adsorption selectivity of these resins is because the adsorption is usually driven by a single type of weak interactions.…”

Section: Introductionmentioning

confidence: 99%

“…Adsorption of phenolic compounds from aqueous solutions has been paid great attention because they are quite common pollutants in wastewaters 1, 8–11, 15. Phenolic compounds derived from various industrial activities, human wastes, and also from biological degradation.…”

Section: Introductionmentioning

confidence: 99%

Effects of multiple weak interactions on the binding of phenolic compounds by polymeric adsorbents

Cheng

Tang

Yan

2006

J of Applied Polymer Sci

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To investigate the effects of multiple weak interactions on the binding of phenolic compounds by polymeric adsorbents, macroporous polystyrene (PS) resin and PS-based adsorbents with different hydrogen-bond acceptor atoms (PSÀ ÀCH 2 (À ÀOCH 2 CH 2 ) n À ÀOCH 3 , n ¼ 0, 1, 2, and 3, denoted as PS-EG 0 , PS-EG 1 , PS-EG 2 , and PS-EG 3 ) were prepared. The phenol adsorption strength order on these adsorbents was PS/PS-EG 0 < PS-EG 1 < PS-EG 2 < PS-EG 3 , indicating that the adsorption on PS and PS-EG 0 was driven by hydrophobic and p-p interactions, and the adsorption on PS-EG 1 , PS-EG 2 , and PS-EG 3 was driven by a hydrogen bond in addition to hydrophobic and p-p interactions. PS-EG 2 may adsorb a second phenol molecule on each binding site and PS-EG 3 may adsorb second and third ones. The adsorption strength of resorcinol increased in the order of PS, PS-EG 1 , and PS-EG 2 , indicating that the adsorption was driven by 0, 1, and 2 hydrogen bonds in addition to hydrophobic and p-p interactions. Similarly, the adsorption of phloroglucinol on PS, PS-EG 1 , PS-EG 2 , and PS-EG 3 was driven by 0, 1, 2, and 3 hydrogen bonds in addition to hydrophobic and p-p interactions because the adsorption strength increased in this order.

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Sorption and desorption of organic compounds by synthetic polymeric sorbents

Cited by 21 publications

References 2 publications

Templated Synthesis of Mesoporous Superparamagnetic Polymers

Templated Synthesis of Mesoporous Superparamagnetic Polymers

Influência das condições reacionais nas características de copolímeros de metacrilato de metila e divinilbenzeno obtidos por polimerização em suspensão

Effects of multiple weak interactions on the binding of phenolic compounds by polymeric adsorbents

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