organic xerogel
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2019 ◽  
Vol 650 ◽  
pp. 1207-1215 ◽  
Author(s):  
M.V. López-Ramón ◽  
J. Rivera-Utrilla ◽  
M. Sánchez-Polo ◽  
A.M.S. Polo ◽  
Antonio J. Mota ◽  
...  

2019 ◽  
Vol 43 (27) ◽  
pp. 10792-10802 ◽  
Author(s):  
Przemysław Strachowski ◽  
Wojciech Kiciński ◽  
Maciej Fronczak ◽  
Waldemar Kaszuwara ◽  
Piotr Baranowski ◽  
...  

Magnetic composite carbon xerogels were synthesized via acidic gelation of resorcinol and furfural in the presence of carbon-encapsulated iron nanoparticles with subsequent carbonization of the as-obtained magnetic organic xerogel.


2018 ◽  
Vol 11 (4) ◽  
pp. 564-572 ◽  
Author(s):  
Miguel A. Álvarez ◽  
Francisco Orellana-García ◽  
M. Victoria López-Ramón ◽  
José Rivera-Utrilla ◽  
Manuel Sánchez-Polo

2015 ◽  
Vol 10 (3) ◽  
pp. 729-737
Author(s):  
Imed Ghiloufi

Partial carbonized nanoporous resin (PCNR-150), based on organic xerogel compounds, was prepared at 150 ºC by sol–gel method from pyrogallol and formaldehyde mixtures in water using perchloric acid as catalyst. The PCNR-150 was characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Fourier transformed infrared spectroscopy (FTIR) and nitrogen porosimetry. The metal uptake characteristics were explored using well-established and effective parameters including pH, contact time, initial metal ion concentration, and temperature. Optimum adsorptions of Co2+ and Ni2+, using PCNR-150 as adsorbent, were observed at pH 5 and 7, respectively. Langmuir model gave a better fit than the other models, and kinetic studies revealed that the adsorption is fast and its data are well fitted by the pseudo-second-order kinetic model and thermodynamic properties, i.e., ΔGo, ΔHo, and ΔSo, showed that adsorption of Co2+ and Ni2+ onto PCNR-150 was endothermic, spontaneous and feasible in the temperature range of 300–328 K.


2011 ◽  
Vol 7 (1) ◽  
pp. 380-386 ◽  
Author(s):  
Barbara A. Nellis ◽  
Joe H. Satcher ◽  
Subhash H. Risbud

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