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Tannic Acid Selectively Extracting Titanium from Ilmenite: Experimental and Theoretical Investigation | OMICS International| Abstract
ISSN: 2168-9806

Journal of Powder Metallurgy & Mining
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  • Research Article   
  • J Powder Metall Min 2017, Vol 6(3): 183
  • DOI: 10.4172/2168-9806.1000183

Tannic Acid Selectively Extracting Titanium from Ilmenite: Experimental and Theoretical Investigation

Cho J1, Roy S2, Sathyapalan A2*, Free LM2 and Fang ZZ2
1School of Materials Engineering, Purdue University, West Lafayette, IN 47907, USA
2Department of Metallurgical Engineering, University of Utah, Salt Lake City, UT 84112, USA
*Corresponding Author : Sathyapalan A, Department of Metallurgical Engineering, University of Utah, Salt Lake City, UT 84112, USA, Tel: 801-581-7200, Email: [email protected]

Received Date: Oct 15, 2017 / Accepted Date: Oct 20, 2017 / Published Date: Oct 27, 2017

Abstract

A novel route of extracting titanium using tannic acid from ilmenite was investigated. The strong affinity of tannic acid towards metal ions having high oxidation states was explored to extract titanium selectively from a multi-element solution prepared by dissolving ilmenite in sulphuric acid and ammonium sulphate. Titanium-tannic acid complex was selectively precipitated from the multi-element solution at pH 4.5. The precipitate was separated by vacuum filtration and the filter cake was washed with 2% hydrochloric acid solution, deionized water and isopropyl alcohol after filtration. The washed filter cake was dried at room temperature and ground into powder on drying. The titaniumtannic acid complex so obtained was composed of 98.6% of titanium, 0.2% of iron and 1.2% of other impurities. The density functional theory simulation at B3LYP method with a basis of 6-31G was also conducted to verify optimized structure and its stability. The result showed energy gap of 2.43 eV between two frontier orbitals (highest occupied molecular orbitals and lowest unoccupied molecular orbitals), which is large enough to indicate energetic feasibility of the complex formation.

Keywords: Tannic acid; Titanium; Ilmenite; Digallic acid; Density functional theory simulation

Citation: Cho J, Roy S, Sathyapalan A, Free LM, Fang ZZ (2017) Tannic Acid Selectively Extracting Titanium from Ilmenite: Experimental and Theoretical Investigation. J Powder Metall Min 6: 183. Doi: 10.4172/2168-9806.1000183

Copyright: © 2017 Cho J, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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