Synergistic enhancement and separation of zirconium(IV) and hafnium(IV) with 3-Phenyl-4-benzoyl-5-isoxazolone in the presence of crown ethers

K. Janardhan Reddy; J. Rajesh Kumar; M. L.P. Reddy; A. Varada Reddy; Hak Soon Park; Kwang Ho Choo

doi:10.1080/01496390902885882

Synergistic enhancement and separation of zirconium(IV) and hafnium(IV) with 3-Phenyl-4-benzoyl-5-isoxazolone in the presence of crown ethers

K. Janardhan Reddy, J. Rajesh Kumar, M. L.P. Reddy, A. Varada Reddy, Hak Soon Park, Kwang Ho Choo

Department of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

3-Phenyl-4-benzoyl-5-isoxazolone (HPBI) was synthesized and examined with regard to the synergistic solvent extraction behavior of zirconium(IV) and hafnium(IV) in the presence of various crown ethers (CEs), namely, 18-crown-6 (18C6), dicylohexano-18-crown-6 (DC18C6) and benzo-15-crown-5 (B15C5) from hydrochloric acid solutions. The results demonstrated that zirconium(IV) and hafnium(IV) were synergistically extracted into chloroform with mixtures of HPBI and CEs as ZrO(PBI)₂ · CE and HfO(PBI)₂ · CE, respectively. The complexation strength follows the order DC18C6 >18C6>B15C5. The addition of CEs not only enhances the extraction efficiency of zirconium(IV) and hafnium(IV) but also significantly, especially in the presence of B15C5, improves the selectivity (Zr/Hf=4.73) between these metal ions as compared to HPBI alone (Zr/Hf=2.09). On the other hand, selectivity has been moderately decreased by the addition of 18C6 or DC18C6 to the metal-chelate system.

Original language	English
Pages (from-to)	2022-2040
Number of pages	19
Journal	Separation Science and Technology
Volume	44
Issue number	9
DOIs	https://doi.org/10.1080/01496390902885882
State	Published - Jan 2009

Keywords

3-Phenyl-4-benzoyl-5-isoxazolone
Crown ethers
Hafnium(IV)
Synergistic extraction
Zirconium(IV)

Access to Document

10.1080/01496390902885882

Cite this

@article{3b417c6721af40e8899597d9b624e567,

title = "Synergistic enhancement and separation of zirconium(IV) and hafnium(IV) with 3-Phenyl-4-benzoyl-5-isoxazolone in the presence of crown ethers",

abstract = "3-Phenyl-4-benzoyl-5-isoxazolone (HPBI) was synthesized and examined with regard to the synergistic solvent extraction behavior of zirconium(IV) and hafnium(IV) in the presence of various crown ethers (CEs), namely, 18-crown-6 (18C6), dicylohexano-18-crown-6 (DC18C6) and benzo-15-crown-5 (B15C5) from hydrochloric acid solutions. The results demonstrated that zirconium(IV) and hafnium(IV) were synergistically extracted into chloroform with mixtures of HPBI and CEs as ZrO(PBI)2 · CE and HfO(PBI)2 · CE, respectively. The complexation strength follows the order DC18C6 >18C6>B15C5. The addition of CEs not only enhances the extraction efficiency of zirconium(IV) and hafnium(IV) but also significantly, especially in the presence of B15C5, improves the selectivity (Zr/Hf=4.73) between these metal ions as compared to HPBI alone (Zr/Hf=2.09). On the other hand, selectivity has been moderately decreased by the addition of 18C6 or DC18C6 to the metal-chelate system.",

keywords = "3-Phenyl-4-benzoyl-5-isoxazolone, Crown ethers, Hafnium(IV), Synergistic extraction, Zirconium(IV)",

author = "{Janardhan Reddy}, K. and {Rajesh Kumar}, J. and Reddy, {M. L.P.} and {Varada Reddy}, A. and Park, {Hak Soon} and Choo, {Kwang Ho}",

year = "2009",

month = jan,

doi = "10.1080/01496390902885882",

language = "English",

volume = "44",

pages = "2022--2040",

journal = "Separation Science and Technology",

issn = "0149-6395",

publisher = "Taylor and Francis Ltd.",

number = "9",

}

TY - JOUR

T1 - Synergistic enhancement and separation of zirconium(IV) and hafnium(IV) with 3-Phenyl-4-benzoyl-5-isoxazolone in the presence of crown ethers

AU - Janardhan Reddy, K.

AU - Rajesh Kumar, J.

AU - Reddy, M. L.P.

AU - Varada Reddy, A.

AU - Park, Hak Soon

AU - Choo, Kwang Ho

PY - 2009/1

Y1 - 2009/1

N2 - 3-Phenyl-4-benzoyl-5-isoxazolone (HPBI) was synthesized and examined with regard to the synergistic solvent extraction behavior of zirconium(IV) and hafnium(IV) in the presence of various crown ethers (CEs), namely, 18-crown-6 (18C6), dicylohexano-18-crown-6 (DC18C6) and benzo-15-crown-5 (B15C5) from hydrochloric acid solutions. The results demonstrated that zirconium(IV) and hafnium(IV) were synergistically extracted into chloroform with mixtures of HPBI and CEs as ZrO(PBI)2 · CE and HfO(PBI)2 · CE, respectively. The complexation strength follows the order DC18C6 >18C6>B15C5. The addition of CEs not only enhances the extraction efficiency of zirconium(IV) and hafnium(IV) but also significantly, especially in the presence of B15C5, improves the selectivity (Zr/Hf=4.73) between these metal ions as compared to HPBI alone (Zr/Hf=2.09). On the other hand, selectivity has been moderately decreased by the addition of 18C6 or DC18C6 to the metal-chelate system.

AB - 3-Phenyl-4-benzoyl-5-isoxazolone (HPBI) was synthesized and examined with regard to the synergistic solvent extraction behavior of zirconium(IV) and hafnium(IV) in the presence of various crown ethers (CEs), namely, 18-crown-6 (18C6), dicylohexano-18-crown-6 (DC18C6) and benzo-15-crown-5 (B15C5) from hydrochloric acid solutions. The results demonstrated that zirconium(IV) and hafnium(IV) were synergistically extracted into chloroform with mixtures of HPBI and CEs as ZrO(PBI)2 · CE and HfO(PBI)2 · CE, respectively. The complexation strength follows the order DC18C6 >18C6>B15C5. The addition of CEs not only enhances the extraction efficiency of zirconium(IV) and hafnium(IV) but also significantly, especially in the presence of B15C5, improves the selectivity (Zr/Hf=4.73) between these metal ions as compared to HPBI alone (Zr/Hf=2.09). On the other hand, selectivity has been moderately decreased by the addition of 18C6 or DC18C6 to the metal-chelate system.

KW - 3-Phenyl-4-benzoyl-5-isoxazolone

KW - Crown ethers

KW - Hafnium(IV)

KW - Synergistic extraction

KW - Zirconium(IV)

UR - http://www.scopus.com/inward/record.url?scp=70449463012&partnerID=8YFLogxK

U2 - 10.1080/01496390902885882

DO - 10.1080/01496390902885882

M3 - Article

AN - SCOPUS:70449463012

SN - 0149-6395

VL - 44

SP - 2022

EP - 2040

JO - Separation Science and Technology

JF - Separation Science and Technology

IS - 9

ER -

Synergistic enhancement and separation of zirconium(IV) and hafnium(IV) with 3-Phenyl-4-benzoyl-5-isoxazolone in the presence of crown ethers

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this