Sulfate intercalated layered double hydroxides prepared by the reformation effect

Theiss, Frederick, Palmer, Sara J., Ayoko, Godwin A., & Frost, Ray L. (2011) Sulfate intercalated layered double hydroxides prepared by the reformation effect. Journal of Thermal Analysis and Calorimetry, 107, pp. 1123-1128.

View at publisher


The removal of the sulfate anion from water using synthetic hydrotalcite (Mg/Al LDH) was investigated using powder x-ray diffraction (XRD) and thermogravimetric analysis (TG). Synthetic hydrotalcite Mg6Al2(OH)16(CO3)∙4H2O was prepared by the co-precipitation method from aluminum and magnesium chloride salts. The synthetic hydrotalcite was thermally activated to a maximum temperature of 380°C. Samples of thermally activated hydrotalcite where then treated with aliquots of 1000ppm sulfate solution. The resulting products where dried and characterized by XRD and TG. Powder XRD revealed that hydrotalcite had been successfully prepared and that the product obtained after treatment with sulfate solution also conformed well to the reference pattern of hydrotalcite. The d(003) spacing of all samples was found to be within the acceptable region for a LDH structure. TG revealed all products underwent a similar decomposition to that of hydrotalcite. It was possible to propose a reasonable mechanism for the thermal decomposition of a sulfate containing Mg/Al LDH. The similarities in the results may indicate that the reformed hydrotalcite may contain carbonate anion as well as sulfate. Further investigation is required to confirm this.

Impact and interest:

15 citations in Scopus
16 citations in Web of Science®
Search Google Scholar™

Citation counts are 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:

278 since deposited on 20 Feb 2012
23 in the past twelve months

Full-text downloads displays 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: 48760
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: Sulfate, layered double hydroxide, hydrotalcite, powder x-ray diffraction, thermogravimetric analysis, water purification
DOI: 10.1007/s10973-011-1369-0
ISSN: 1572-8943 (online) 1388-6150 (print)
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 Springer
Copyright Statement: The Author is
entitled, however, to self-archive the preprint version of his/her manuscript. The preprint version is the Author’s manuscript or the galley proof or the
Author’s manuscript along with the corrections made in the course of the peer review process. The Author’s right to self-archive is irrespective of the
format of the preprint (.doc, .tex., .pdf) version and self-archiving includes the free circulation of this file via e-mail or publication of this preprint on the
Author’s webpage or on the Author’s institutional repository with open or restricted access. When self-archiving a paper the Author should clearly
declare that the archived file is not the final published version of the paper, he/she should quote the correct citation and enclose a link to the
published paper ([DOI of the Article without brackets]).
Deposited On: 20 Feb 2012 22:39
Last Modified: 27 Jun 2017 04:51

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page