scholarly journals Sorption of different phenol derivatives on functionalized macroporous nanocomposite of poly (glycidyl methacrylate-co-ethylene glycol dimethacrylate) and acid modified bentonite

2014 ◽  
Vol 79 (10) ◽  
pp. 1249-1261 ◽  
Author(s):  
Sanja Marinovic ◽  
Aleksandra Milutinovic-Nikolic ◽  
Aleksandra Nastasovic ◽  
Marija Zunic ◽  
Zorica Vukovic ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Glycidyl Methacrylate ◽  
Ethylene Glycol Dimethacrylate ◽  
Order Kinetic ◽  
Glycol Dimethacrylate ◽  
Modified Bentonite ◽  
Phenol Derivatives ◽  
Order Kinetic Model ◽  
Influence Of Temperature On ◽  
Pseudo Second Order

Macroporous nanocomposite of poly (glycidyl methacrylate-co-ethylene glycol dimethacrylate) and acid modified bentonite was prepared by radical suspension copolymerization. Nanocomposite was functionalized with diethylene triamine (deta), by ring-opening reaction of the pendant epoxy groups. Functionalization was performed in order to enable phenol derivatives sorption. This new, not sufficiently investigated material, with developed porous structure was denoted CP-SA-deta. In this study, the influence of temperature on 4-nitrophenol (4NP) sorption on CP-SA-deta was investigated. The chemisorption was estimated as dominant process since activation energy of sorption of 4NP of 54.8 kJ mol-1 was obtained. After determining the optimal sorption conditions for 4NP, the sorption of 2-nitrophenol (2NP) and 2-chloro 4-nitrophenol (2Cl4NP) on CP-SA-deta was investigated with respect to pH, initial concentration and contact time. The 2NP sorption was seldom tested, while according to our knowledge, the 2Cl4NP sorption was not investigated. The isotherm data were best fitted with Langmuir model, while the sorption dynamics obeyed the pseudo-second-order kinetic model for all derivatives.

Monodisperse, nanoporous ceria microspheres embedded with Pt nanoparticles: general facile synthesis and catalytic application

RSC Advances ◽  
2014 ◽  
Vol 4 (81) ◽  
pp. 42965-42970 ◽  
Author(s):  
Lin Zhou ◽  
Xiaoxiao Li ◽  
Yong Wang ◽  
Mei Hong ◽  
Yongye Liang ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Glycidyl Methacrylate ◽  
Pt Nanoparticles ◽  
Ethylene Glycol Dimethacrylate ◽  
Nanoporous Structure ◽  
Glycol Dimethacrylate ◽  
Hard Template ◽  
Facile Synthesis ◽  
Catalytic Application

A monodisperse Pt/ceria hybrid with controlled nanoporous structure was fabricated with the aid of poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) microspheres as a hard template.

scholarly journals Synthesis and Application of Histidine-Modified Poly(Glycidyl Methacrylate/Ethylene Glycol Dimethacrylate) Sorbent for Isolation of Caffeine from Black and Green Tea Samples

2018 ◽  
Vol 81 (11) ◽  
pp. 1467-1474 ◽  
Author(s):  
Florian Meischl ◽  
Klemens Losso ◽  
Christian G. Kirchler ◽  
Stefan E. Stuppner ◽  
Christian W. Huck ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Green Tea ◽  
Glycidyl Methacrylate ◽  
Ethylene Glycol Dimethacrylate ◽  
Glycol Dimethacrylate

Adsorption of Pb(II) on raw and organically modified Jordanian bentonite

Clay Minerals ◽  
2015 ◽  
Vol 50 (4) ◽  
pp. 485-496 ◽  
Author(s):  
I. Hamadneh ◽  
R. Abu-Zurayk ◽  
B. Abu-Irmaileh ◽  
A. Bozeya ◽  
A. H. Al-Dujaili
Keyword(s):  
Exchange Capacity ◽  
Second Order ◽  
Area Measurement ◽  
Order Kinetic ◽  
X Ray Diffraction ◽  
Experimental Conditions ◽  
Modified Bentonite ◽  
X Ray ◽  
Order Kinetic Model ◽  
Pseudo Second Order

AbstractA comparative study using bentonite (BT), hexadecyltrimethylammonium-modified bentonite (BT-HDTMA) and phenyl fatty hydroxamic acid-modified bentonite (BT-PFHA) as adsorbents for the removal of Pb(II) has been proposed. These adsorbents were characterized by X-ray diffraction, X-ray fluorescence, Fourier-transform infrared spectroscopy and surface area measurement. Cation exchange capacity was also determined in this study. The adsorbent capabilities for Pb(II) from aqueous solution were investigated, and the optimal experimental conditions including adsorption time, adsorbent dosage, the initial concentration of Pb(II), pH and temperature that might influence the adsorption performance were also investigated. The experimental equilibrium adsorption data were tested by four widely used two-parameter equations, the Langmuir, Freundlich, Dubinin- Radushkevich (D-R) and Temkin isotherms. The monolayer adsorption capacities of BT, BT-HDTMA and BT-PFHA for Pb(II) were 149.3, 227.3 and 256.4 mg/g, respectively. The experimental kinetic data were analysed by pseudo-first order, pseudo-second order and intraparticle diffusion kinetics models. The experimental data fitted very well with the pseudo-second order kinetic model. Determination of the thermodynamic parameters, ΔG, ΔH and ΔS showed the adsorption to be feasible, spontaneous and exothermic.

scholarly journals Glycidyl Methacrylate-ethylene Glycol Dimethacrylate Copolymers with Varied Pore Structures Prepared with Different Reaction Parameters

2020 ◽  
Vol 23 (3) ◽  
Author(s):  
Luciana C. Costa ◽  
Rafaela C. Monteiro ◽  
Helena M. A. Castro ◽  
Tatiane S. Ribeiro ◽  
Mirian A. Oliveira ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Glycidyl Methacrylate ◽  
Ethylene Glycol Dimethacrylate ◽  
Glycol Dimethacrylate ◽  
Reaction Parameters ◽  
Pore Structures
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