scholarly journals Effect of structure on extraction behavior of praseodymium with a series of unsymmetrical diglycolamides from hydrochloric acid

2018 ◽  
Vol 83 (9) ◽  
pp. 969-980 ◽  
Author(s):  
Jixun Han ◽  
Xucan Cai ◽  
Guoxin Sun ◽  
Yu Cui
Keyword(s):  
Hydrochloric Acid ◽  
Alkyl Chain ◽  
Extraction Ability ◽  
Extractant Concentration ◽  
Extraction Mechanism ◽  
Extraction Behavior ◽  
Hydrochloric Acid Medium ◽  
Chain Lengths ◽  
Sulfonated Kerosene ◽  
Effect Of Structure

The extraction behavior of Pr(III) has been investigated using four kinds of unsymmetrical diglycolamide (DGA) extractants having different alkyl chain lengths, namely N,N?-dimethyl-N,N?-didodecyldiglycolamide (DMDDdDGA), N,N?-diethyl-N,N?-didodecyldiglycolamide (DEDDdDGA), N,N?-dipropyl-N,N?-didodecyldiglycolamide (DPDDdDGA) and N,N?-dibutyl- N,N?-didodecyldiglycolamide (DBDDdDGA). The effect of the alkyl chain of amidic N atoms in DGAs on the extraction ability of Pr(III) is discussed. The extraction of hydrochloric acid and Pr(III) from hydrochloric acid medium by DGAs in sulfonated kerosene, toluene and octanol was studied. The effect of extractant concentration and diluents on the distribution ratio (D) of Pr(III) was investigated to understand the extraction mechanism. Pr(III) and Fe(III) can be separated very well by DMDDdDGA and DBDDdDGA diluted by toluene in hydrochloric acid solution. IR spectra of extracted species of DGA?HCl and DGA?Pr(III) were recorded to study the structure of the extracted species.

scholarly journals Extraction of Sm(III)and Nd(III) with N,N,N’,N’-tetrabutyl-3-oxy-diglycolamidefrom hydrochloric acid

2013 ◽  
Vol 78 (1) ◽  
pp. 93-100 ◽  
Author(s):  
J.H. Yang ◽  
Y. Cui ◽  
G.X. Sun ◽  
Y. Nie ◽  
G.M. Xia ◽  
...  
Keyword(s):  
Rare Earth ◽  
Hydrochloric Acid ◽  
Ir Spectra ◽  
Acid Concentration ◽  
Distribution Ratio ◽  
Hydrochloric Acid Concentration ◽  
Extractant Concentration ◽  
Extraction Mechanism ◽  
Extraction Behavior ◽  
Loaded Organic Phase

The extraction behavior of Sm(III) and Nd(III) with N,N,N?,N?-tetrabutyl-3-oxa-diglycolamide (TBDGA) in 70% kerosene-30% n-octanol from hydrochloride acid wasstudied. The effect of hydrochloric acid concentration, extractant concentration,and temperature on the distribution of rare earth elementswas investigated. The extraction mechanism was established and the stoichiometry of the main extracted species was confirm to be SmCl3?2TBDGA and NdCl3?2TBDGA for Sm(III) and Nd(III), respectively. The extraction distribution ratio decreases with an increase in temperature, which demonstrates that the extraction reaction is exothermic. The IR spectra of the loaded organic phase and free extractant were recorded and discussed.

Extraction of Precious Metals with a New Amide Extractant

2014 ◽  
Vol 878 ◽  
pp. 399-405 ◽  
Author(s):  
Ying Huang ◽  
Nan Li ◽  
Yong Hua Li ◽  
Jian Wu ◽  
Shang Hua Li ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Hydrochloric Acid ◽  
Heat Resistance ◽  
Extraction Efficiency ◽  
Precious Metals ◽  
Electronic Industry ◽  
Acylation Reaction ◽  
Extractant Concentration ◽  
Extraction Behavior ◽  
Hcl Concentration

Precious metals are used widely in electronic industry because of their excellent heat resistance, corrosion resistance and catalytic property. Therefore it is important to recycle precious metals from E-waste. In this study, a new amid extractant N,N-Dimethyl-N,N-didecyl-3-thiopentanediamide (MDTDGA) was firstly synthesized through N-alkylated and N-acylation reaction. The extraction behavior of precious metals with MDTDGA in 80% dodecane-20% 2-ethylhexanol from hydrochloric acid was studied. The extraction ration increases with HCl concentration and extractant concentration, but it is not influenced by H+ concentration. It is indicated that the extraction of precious metals Pd (II), Pt (IV), Au (III) with MDTDGA is neutral coordination. High extraction efficiency of Au (III) of 99.5% using MDTDGA was obtained.

The Extraction Behavior of Cu2+ with N,N,N',N'-Tetrabutyl-3-Oxy-Glutaramide from Hydrochloric Acid

2013 ◽  
Vol 726-731 ◽  
pp. 2795-2799
Author(s):  
Xiao Lei Liu ◽  
Guo Xin Sun ◽  
Qing Yi Dang ◽  
Xue Peng Zhao
Keyword(s):  
Hydrochloric Acid ◽  
Acid Concentration ◽  
Distribution Ratio ◽  
Hydrochloric Acid Concentration ◽  
Extractant Concentration ◽  
Extraction Behavior ◽  
Extraction Reaction ◽  
Nacl Concentration

The extraction behavior of Cu2+ using N,N,N,N-tetrabutyl-3-oxy-glutaramide from hydrochloric acid was studied. The effect of hydrochloric acid concentration, NaCl concentration, extractant concentration, and temperature on the extraction distribution of Cu2+ was also investigated. The result shows that the distribution ratio increases with an increase of the acid concentration, NaCl concentration or extractant concentration, but decreases with temperature, which demonstrates that the extraction reaction is exothermic.

CORROSION INHIBITION OF ZINC IN HYDROCHLORIC ACID MEDIUM USING UREA INHIBITOR

2007 ◽  
Vol 10 (2) ◽  
pp. 31-38 ◽  
Author(s):  
Khulood AL-Saadie ◽  
◽  
Nadia Abdul Karime ◽  
Israa M Al-Mousawi ◽  
◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Acid Medium ◽  
Corrosion Inhibition ◽  
Hydrochloric Acid Medium

scholarly journals Facile construction of a family of supramolecular gels with good levofloxacin hydrochloride loading capacity

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12641-12648
Author(s):  
Renyuan Chen ◽  
Caidie Xu ◽  
Yihao Lei ◽  
Hongxin Liu ◽  
Yabin Zhu ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Alkyl Chain ◽  
Low Molecular Weight ◽  
Loading Capacity ◽  
Supramolecular Gels ◽  
Low Molecular Weight Gelators ◽  
Chain Lengths

A family of low molecular weight gelators with different alkyl chain lengths was constructed, having excellent gelation ability and antibiotic loading capacity. A low molecular weight hydrogelator was obtained by adjusting the length of alkyl chain.

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