Record Details

Study of the thermal behaviour of a derivative based on a zirconium agent (modified montmorillonite) and determination of the physical characteristics

NOPR - NISCAIR Online Periodicals Repository

View Archive Info
 
 
Field Value
 
Title Study of the thermal behaviour of a derivative based on a zirconium agent (modified montmorillonite) and determination of the physical characteristics
 
Creator Khiati, Zoulikha
Mrah, Lahouari
 
Subject Dynamic light scattering (DLS)
Maghnite
Pillared clays
Silicate structure
Zeta-potential (ζ)
 
Description 173-179
In this research, untreated Algerian maghnite has been used to develop two types of modified clays: the first one is a
homo-ionic sodium clay (Na-Mag) which is a support to develop a montmorillonite by insertion of zirconium hydroxyl
cations. The different series of techniques, including thermogravimetric analysis (TGA), differential thermal analysis
(DTA), dynamic light scattering (DLS), and zeta potential (ζ), have been used to define the physical characteristics of the
clays by studying their particle size distribution as well as the thermal profile. In addition, the pillar-shaped montmorillonite
(Maghnite) exhibit a negative charge even when its pH reach 2.8. This large negative surface charge of montmorillonite
suggests optimal removal of organic molecule particles present in the aqueous medium. The results obtained by Fourier
transform infrared (FT-IR) analysis show that the bands characterizing the presence of intercalating agents are visible.
Thermography of the zirconium pillar species shows an improvement in the thermal stability of the silicate structure with
two well differentiated zones. Adsorbed organic cations result in a reduction of the surface load, that is, a decrease of its
negativity, as well as a cancellation of the charge.
 
Date 2023-03-17T10:18:34Z
2023-03-17T10:18:34Z
2023-03
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/61562
https://doi.org/10.56042/ijct.v30i2.64537
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJCT Vol.30(2) [March 2023]