QUT ePrints

Thermal analysis and infrared emission spectroscopic study of halloysite-potassium acetate intercalation compound

Frost, Ray L., Yang, Jing, Cheng, Hongfei, Liu, Qinfu , & Zhang, Jinshan (2010) Thermal analysis and infrared emission spectroscopic study of halloysite-potassium acetate intercalation compound. Thermochimica Acta, 511(1-2), pp. 124-128.

View at publisher

Abstract

The thermal decomposition of halloysite-potassium acetate intercalation compound was investigated by thermogravimetric analysis and infrared emission spectroscopy. The X-ray diffraction patterns indicated that intercalation of potassium acetate into halloysite caused an increase of the basal spacing from 1.00 to 1.41 nm. The thermogravimetry results show that the mass losses of intercalation the compound occur in main three main steps, which correspond to (a) the loss of adsorbed water (b) the loss of coordination water and (c) the loss of potassium acetate and dehydroxylation. The temperature of dehydroxylation and dehydration of halloysite is decreased about 100 °C. The infrared emission spectra clearly show the decomposition and dehydroxylation of the halloysite intercalation compound when the temperature is raised. The dehydration of the intercalation compound is followed by the loss of intensity of the stretching vibration bands at region 3600-3200 cm-1. Dehydroxylation is followed by the decrease in intensity in the bands between 3695 and 3620 cm-1. Dehydration was completed by 300 °C and partial dehydroxylation by 350 °C. The inner hydroxyl group remained until around 500 °C.

Impact and interest:

10 citations in Scopus
Search Google Scholar™
10 citations in Web of Science®

Citation countsare sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

70 since deposited on 09 Nov 2010
28 in the past twelve months

Full-text downloadsdisplays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 38383
Item Type: Journal Article
Keywords: Halloysite, Potassium acetate, Intercalation compound, Thermogravimetry, Infrared emission spectroscopy
DOI: 10.1016/j.tca.2010.08.003
ISSN: 0040-6031
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > ANALYTICAL CHEMISTRY (030100) > Analytical Chemistry not elsewhere classified (030199)
Divisions: Past > Schools > Chemistry
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2010 Elsevier
Deposited On: 10 Nov 2010 08:01
Last Modified: 01 Mar 2012 00:20

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page