Selective extraction of palladium(II) from hydrochloric acid solutions with pyridinecarboxamides and ACORGA®CLX50

Autor:	Magdalena Regel-Rosocka, Anna Cieszyńska, Aleksandra Borowiak-Resterna, Maciej Wisniewski, Ana Maria Sastre
Rok vydání:	2007
Předmět:	Chemistry Extraction (chemistry) Inorganic chemistry chemistry.chemical_element Filtration and Separation Hydrochloric acid Electrolyte Analytical Chemistry Metal chemistry.chemical_compound visual_art Phase (matter) visual_art.visual_art_medium Chelation Selectivity Palladium
Zdroj:	Separation and Purification Technology. 53:337-341
ISSN:	1383-5866
DOI:	10.1016/j.seppur.2006.08.005
Popis:	The selectivity of Pd(II) extraction over Pt(IV), Pb(II), Cu(II) and Fe(III) with N-dodecylpyridine-3-carboxamide (3-C12) and N-dodecylpyridine-4-carboxamide (4-C12) is very high, compared with the commercial chelating extractant ACORGA®CLX50; therefore, these pyridinecarboxamides can be considered as effective extractants for Pd(II) separation from hydrochloric acid solutions. Over 90% of palladium(II) can be effectively extracted with 3-C12 and 4-C12 in the presence of Pb(II), Cu(II) or Fe(III) over the studied HCl concentration range. While merely up to 5% of the other metal is transported to the organic phase. Pd(II) can be separated from Pt(IV) efficiently at low HCl concentration. ACORGA®CLX50 indicates a much lower extraction than do pyridinecarboxamides in the same time range. The effect of the presence of NaCl is negligible. Extraction in a system with addition of NaCl is slightly lower than without the electrolyte.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::640946f6eca728d36e9b54785208c3a6 https://doi.org/10.1016/j.seppur.2006.08.005 Zobrazit plný text záznamu Full Text from ScienceDirect