eprintid: 3643
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/36/43
datestamp: 2023-11-09 15:51:54
lastmod: 2023-11-09 15:51:54
status_changed: 2023-11-09 15:47:18
type: article
metadata_visibility: show
creators_name: Elkhalifah, A.E.I.
creators_name: Azmi Bustam, M.
creators_name: Murugesan, T.
title: Thermal properties of different transition metal forms of montmorillonite intercalated with mono-, di-, and triethanolammonium compounds
ispublished: pub
keywords: Ammonium-montmorillonite; Coordination mechanisms; Desorption temperatures; Elemental compositions; Intercalation process; Structural characteristics; Thermal behaviors; Thermal transitions, Ammonium compounds; Desorption; Positive ions; Thermoanalysis; Thermogravimetric analysis; Transition metals, Clay minerals
note: cited By 7
abstract: In the present study, different transition metal forms of montmorillonite have been intercalated with mono-, di-, and triethanolammonium cations via d coordination mechanism to investigate their thermal behavior, structural characteristics, surface properties, and elemental composition using TG, XRD, BET, and CHNS techniques. Thermogravimetric analysis showed two thermal transition steps for transition metal-exchanged montmorillonites, which attributed to desorption of the physically adsorbed water and hydrated water, and dehydroxylation of the structural water; whereas for ammonium- montmorillonite complexes, the TG curves showed three thermal transition steps which attributed to desorption of the adsorbed water and dehydration, decomposition of the ammonium cations in the interlayer space of montmorillonite, and the dehydroxylation of the structural water. The thermal analysis of ammonium-montmorillonites affirmed that the molar mass of amine compounds used affects both desorption temperature (position) and the amount of the adsorbed water (intensity). XRD results revealed that the molar mass of amine used has linear relation with the basal spacings of the corresponding ammonium-montmorillonites, indicating structural changes. BET results showed that the molar mass of amines has an inverse effect on the surface area of the studied samples. CHNS analysis for the studied samples quantitatively confirmed the intercalation of ammonium cations into the interlayer space of montmorillonite. © 2012 Akadémiai Kiadó, Budapest, Hungary.
date: 2013
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880696771&doi=10.1007%2fs10973-012-2657-z&partnerID=40&md5=15a03e26a7f731b2fe26b4b064e99b34
id_number: 10.1007/s10973-012-2657-z
full_text_status: none
publication: Journal of Thermal Analysis and Calorimetry
volume: 112
number: 2
pagerange: 929-935
refereed: TRUE
issn: 13886150
citation:   Elkhalifah, A.E.I. and Azmi Bustam, M. and Murugesan, T.  (2013) Thermal properties of different transition metal forms of montmorillonite intercalated with mono-, di-, and triethanolammonium compounds.  Journal of Thermal Analysis and Calorimetry, 112 (2).  pp. 929-935.  ISSN 13886150