Calix[4]pyrrole-Functionalized Silica Gels: Novel Supports for the HPLC-Based Separation of Anions

2000 ◽  
pp. 238-254 ◽  
Author(s):  
Jonathan L. Sessler ◽  
John W. Genge ◽  
Philip A. Gale ◽  
Vladimír Král
Keyword(s):  
Silica Gels ◽  
Functionalized Silica

scholarly journals Extraction of minor actinides, lanthanides and other fission products by silica-immobilized BTBP/BTPhen ligands

2017 ◽  
Vol 53 (28) ◽  
pp. 4010-4013 ◽  
Author(s):  
Ashfaq Afsar ◽  
Petr Distler ◽  
Laurence M. Harwood ◽  
Jan John ◽  
James Westwood
Keyword(s):  
Fission Products ◽  
Silica Gels ◽  
Minor Actinides ◽  
Functionalized Silica

Novel BTBP [bis-(1,2,4-triazin-3-yl)-2,2′-bipyridine]/BTPhen [bis-(1,2,4-triazin-3-yl)-1,10-phenanthroline] functionalized silica gels have been developed to extract minor actinides, lanthanides and other fission products.

scholarly journals Adsorption Separation of Arsenic(III) and Arsenic(V) using Functionalized Silica Gels

2021 ◽  
Vol 14 (4) ◽  
pp. 477-488
Author(s):  
Elena V. Borodina ◽  
◽  
Svetlana L. Didukh-Shadrina ◽  
Vladimir N. Losev ◽  
Anatoly K. Trofimchuk ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Separation Efficiency ◽  
Inorganic Arsenic ◽  
Optical Emission ◽  
Arsenic Species ◽  
Silica Gels ◽  
Emission Spectrometry ◽  
Functionalized Silica ◽  
Inductively Coupled ◽  
Ph Range

A method for the adsorption separation of inorganic arsenic species (As(III)/As(V)) using sequentially connected preconcentrating columns filled with functionalized silica gels and their determination by inductively coupled plasma optical emission spectrometry was proposed. As(V) was effectively retained at pH 3.5–6.5 by an adsorbent containing groups of quaternary phosphonium bases on the surface and exhibiting the properties of an anion exchanger. In this pH range, As(III) was not extracted, which made it possible to separate As(V) from As(III). As(III) was retained in a wide pH range of 1–6 by a complexing adsorbent containing mercapto groups on the surface. Adsorbed As(V) was quantitatively eluted from the surface with 1M HNO3, and As(III) – with 5 % unithiol solution in 2M HCl. The use of «non-aggressive» eluents allows us to reuse adsorbents for preconcentration of As(III) and As(V) at least 5 times. The separation efficiency was confirmed by the analysis of model solutions

Nanocrystallite–liquid phase transition in porous matrices with chemically functionalized surfaces

2019 ◽  
Vol 21 (44) ◽  
pp. 24674-24683 ◽  
Author(s):  
Maxim M. Lazarenko ◽  
Alexander N. Alekseev ◽  
Sergei A. Alekseev ◽  
Yuriy F. Zabashta ◽  
Yurii E. Grabovskii ◽  
...  
Keyword(s):  
Phase Transition ◽  
Liquid Phase ◽  
Surface Area ◽  
Pore Volume ◽  
Silica Gels ◽  
Functionalized Silica ◽  
Liquid Phase Transition ◽  
Melting Temperatures ◽  
Functionalized Surfaces ◽  
Porous Matrices

Melting temperatures of 1-octadecene confined in the pores of chemically functionalized silica gels vs. the ratio of surface area to pore volume.

Enhanced catalysis under flow conditions using SiliaBond functionalized silica gels

2011 ◽  
Vol 1 (9) ◽  
pp. 1600 ◽  
Author(s):  
Valerica Pandarus ◽  
Genevieve Gingras ◽  
François Béland ◽  
Rosaria Ciriminna ◽  
Mario Pagliaro
Keyword(s):  
Silica Gels ◽  
Functionalized Silica ◽  
Flow Conditions

scholarly journals Disiloxanes and Functionalized Silica Gels: One Route, Two Complementary Outcomes—Guanidinium and Pyridinium Ion-Exchangers

PLoS ONE ◽  
2015 ◽  
Vol 10 (12) ◽  
pp. e0145680 ◽  
Author(s):  
Łukasz Tabisz ◽  
Ainur Tukibayeva ◽  
Radoslaw Pankiewicz ◽  
Marta Dobielska ◽  
Boguslawa Leska
Keyword(s):  
Silica Gels ◽  
Functionalized Silica ◽  
Ion Exchangers ◽  
Pyridinium Ion
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