Extraction of molybdenum(VI) by 4-(5-nonyl)pyridine in benzene from aqueous mineral acid solutions containing thiocyanate ions

M. Bhatti; Shamasud Zuha; M. Qureshi

doi:10.1007/bf02227326

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 82: Issue 1

Extraction of molybdenum(VI) by 4-(5-nonyl)pyridine in benzene from aqueous mineral acid solutions containing thiocyanate ions

Authors:

M. Bhatti

M. Bhatti Pakistan Institute of Nuclear Science and Technology Nuclear Chemistry Division P. O. Nilore Rawalpindi Pakistan

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Shamasud Zuha

Shamasud Zuha Pakistan Institute of Nuclear Science and Technology Nuclear Chemistry Division P. O. Nilore Rawalpindi Pakistan

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, and

M. Qureshi

M. Qureshi Pakistan Institute of Nuclear Science and Technology Nuclear Chemistry Division P. O. Nilore Rawalpindi Pakistan

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Pages:: 45–52

Online Publication Date:: 23 Oct 2005

Publication Date:: 17 Apr 1984

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02227326

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Abstract

Extraction of Mo(VI) by 4-(5-nonyl)pyridine (NPy) in benzene from mineral acid solutions containing thiocyanate ions has been investigated at room temperature (23±2°C). From mineral acid (HCl, HNO₃, and H₂SO₄) solutions alone Mo(VI) is not extracted quantitatively while the presence of small amounts of KSCN in the system augments the extraction by a large factor. Stoichiometric studies indicate that ion-pair type complexes (NPyH)₂·[MoO₂(SCN)₄] are responsible for the extraction. Separation factors determined at fixed extraction conditions (0.1M Npy/C₆H₆–0.1M acid +0.2M KSCN) reveal that Ag(I), Cu(II), Co(II), Zn(II), Hg(II) and U(VI) are co-extracted while a clean separation from alkali metals, alkaline earths and some transition metals like Ln(III), Zr(IV), Hf(IV), Cr(III), Cr(VI) and Ir(III) is possible. Some of the complexing anions like oxalate, citrate, acetate, thiosulfate or ascorbate do not affect the degree of extraction of Mo(VI) allowing it to be recovered from diverse matrices.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)