scholarly journals Extraction of Pd(ii) and Pt(ii) from aqueous hydrochloric acid with 1,3-diaminocalix[4]arene: switching of the extraction selectivity by using different extraction modes

RSC Advances ◽  
2020 ◽  
Vol 10 (58) ◽  
pp. 35473-35479
Author(s):  
Naoya Morohashi ◽  
Yu Kurusu ◽  
Kosuke Akasaka ◽  
Tetsutaro Hattori
Keyword(s):  
Hydrochloric Acid ◽  
Aqueous Phase ◽  
Extraction Ability ◽  
Aqueous Hydrochloric Acid ◽  
Extraction Selectivity

1,3-Diaminocalix[4]arene shows extraction ability toward Pd(ii) and Pt(ii), the selectivity of which can be switched by changing the concentrations of H+ and Cl− in the aqueous phase.

scholarly journals Indium and thallium extraction into betainium bis(trifluoromethylsulfonyl)imide ionic liquid from aqueous hydrochloric acid media

2020 ◽  
Vol 44 (6) ◽  
pp. 2527-2537 ◽  
Author(s):  
M. F. Volia ◽  
E. E. Tereshatov ◽  
M. Boltoeva ◽  
C. M. Folden
Keyword(s):  
Ionic Liquid ◽  
Hydrochloric Acid ◽  
Aqueous Phase ◽  
Protic Ionic Liquid ◽  
Acid Media ◽  
Aqueous Hydrochloric Acid ◽  
Carrier Free ◽  
Hydrochloric Acid Media

Carrier-free In and Tl radionuclides were extracted into a protic ionic liquid [Hbet][Tf2N] from HCl media with and without the presence of zwitterionic betaine in the aqueous phase.

A 35Cl magnetic resonance study of chloride exchange on indium(III) and thallium(III) in aqueous hydrochloric acid solution

1975 ◽  
Vol 28 (9) ◽  
pp. 1901 ◽  
Author(s):  
SF Lincoln ◽  
AC Sandercock ◽  
DR Stranks
Keyword(s):  
Exchange Rate ◽  
Magnetic Resonance ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Hydrochloric Acid Solution ◽  
Magnetic Resonance Study ◽  
Aqueous Hydrochloric Acid ◽  
Chloride Exchange ◽  
Lower Limits ◽  
Aqueous Hydrochloric Acid Solution

The parameters describing chloride exchange on indium(III), determined by 35Cl N.M.R., are: k(298 K)= (8.8�0+4) x 106 s-1, ΔH? = 45.7�2.3 kJ mol-1 and ΔS? = 42�8 J mol-1 K-1; and k(298 K)= (2.0�0.1)x106 s-1, ΔH? = 37.7�1.9 kJ mol-1, and ΔS? = 3�6 J mol-1 K-1 in 10.95M and 7.00M aqueous hydrochloric acid respectively, calculated from the observed exchange rate kex4[InCl4(H2O)2-].��� For thallium(III) lower limits of kex(219 K) = 1.6 x 106 s-1 and 1.3 x 106 s-1 were obtained in 10.95M and 7.00M aqueous hydrochloric acid, respectively, where [TlCl6]3- is assumed to be the exchanging species.

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