Download or read book The Solvent Extraction Behavior of Some Metals in TBP Solvent System written by Shiro Yoshizawa and published by . This book was released on 1973 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of the Behavior of the TBP kerosene Solvent in Uranium Refining written by Robert K. Klopfenstein and published by . This book was released on 1960 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solvent Extraction written by G. M. Ritcey and published by . This book was released on 1984 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ion Exchange and Solvent Extraction written by Bruce A Moyer and published by CRC Press. This book was released on 2013-12-09 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past several decades, the theme of supramolecular chemistry (SC) has permeated nearly all aspects of chemical endeavor. Not surprisingly, it has also pervaded the field of solvent extraction (SX), inspiring the framework for this volume of Ion Exchange and Solvent Extraction. In addition, tools for studying aggregation have grown increasingly sophisticated, leading to a greater understanding of what we now recognize as SC phenomena in SX. Volume 21, Supramolecular Aspects of Solvent Extraction identifies how supramolecular behavior occurs and is studied in the context of SX and how SC is influencing the direction of SX. With contributions by internationally recognized specialists from different fields, this volume examines how principles of SC are being used in advancing the design of new highly selective SX systems and for understanding aggregation phenomena in SX systems. The book begins with a discussion of the nature and definition of SC and its general use in the design of novel SX reagents. Chapter 2 expands the subject of ion-pair recognition to introduce outer-sphere recognition of metal complexes. Chapter 3 reviews the literature on calixarenes as extraction reagents for metal ions. Chapter 4 extends the utility of this chemistry, describing the use of calixarenes for the extraction of biomolecules. Chapter 5 examines the liquid–liquid interface as an expression of supramolecular phenomena in SX, reviewing interfacial aggregation in model two-phase systems and metal extraction systems. The final chapter explores the problem of aggregation in SX, the historical attempts to understand it, and recent progress that has been made in addressing the issue.
Download or read book The Solvent Extraction of Metal Chelates written by Jiří Starý and published by Elsevier. This book was released on 2013-10-22 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Solvent Extraction of Metal Chelates is a comprehensive account of the solvent extraction (liquid-liquid extraction) of metal chelate complexes. Topics covered include the composition and stability of metal chelates; analytical applications of the solvent extraction of metal chelates; and selective extraction procedures for metals. A theoretical treatment of the solvent extraction of metal chelates is also given. This book is comprised of six chapters and begins with an overview of solvent extraction and how it can be used to solve important theoretical problems concerning the composition and stability of soluble and insoluble metal complexes. The next chapter examines the composition and stability of metal chelates based on the assumption that only uncharged complexes are dissolved and extracted by the organic solvents. A theory of the solvent extraction of metal chelates is then described, paying particular attention to a variety of factors that influence the extraction of metal chelates, including acidity, solubility and instability of the metal chelate, and organic solvent. Some analytical applications of the solvent extraction of metal chelates are also considered. The last two chapters deal with systems and selective extraction procedures for metals. This monograph will be of particular value to inorganic and analytical chemists.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solvent Extraction Principles and Practice Revised and Expanded written by Jan Rydberg and published by CRC Press. This book was released on 2004-03-01 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete and up-to-date presentation of the fundamental theoretical principles and many applications of solvent extraction, this enhanced Solvent Extraction Principles and Practice, Second Edition includes new coverage of the recent developments in solvent extraction processes, the use of solvent extraction in analytical applications and waste recovery, and computational chemistry methods for modeling the solvent extraction of metal ions. Offering sound scientific and technical descriptions in a format accessible to students and expedient for researchers and engineers, this edition also features a new chapter on ionic strength corrections and contains more than 850 up-to-date literature citations.
Download or read book Investigation of Metal Ion Extraction and Aggregate Formation Combining Acidic and Neutral Organophosphorus Reagents written by Alexander David Braatz and published by . This book was released on 2015 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced nuclear fuel cycles are dependent on successful chemical separation of various elements present in the used fuel. Numerous solvent extraction systems have been developed for this purpose. In these solvent extraction systems, aggregation phenomena can interfere with the efficiencies of the processes and decrease the successfulness of the separation. The predictability of these phenomena have been challenging due to the lack of a fundamental understanding of the mechanism that drives these aggregate formations. Previous research has shown that these aggregates may be linked to a synergistic effect, whereby the extraction of metal ion into the organic phase is enhanced with mixtures of extraction reagents compared to each reagent used alone. To investigate the aggregation more closely and to probe the possibility of a link between aggregation and synergy, combined solutions of tri-n-butyl phosphate (TBP) and dibutyl phosphoric acid (HDBP) in n-dodecane were chosen as the organic phase to be contacted with an aqueous phase containing a single metal ion from the lanthanide series in nitric acid. Distribution ratios of the metal ions between the phases as well as water uptake and nitric acid extraction into the organic phase were used to investigate this aggregation phenomenon more closely and to understand the extraction behavior of this binary extractant system. Additionally, X-ray and neutron scattering and X-ray absorption techniques were used to investigate the macromolecular phase behaviors of the organic phase, with scattering yielding information regarding aggregate size and shape and absorption yielding information on the complex environment of the extracted metal ions. The combination of these techniques provide a more complete picture of the organic phase and may shed light on the link to synergy and mixed complexes. Our studies show that the complexes resulting from extraction of lanthanides into TBP:HDBP system differ from those that have been previously explored in these types of systems. This finding coupled with the formation of elongated rod-like aggregate structures formed in the organic phase may suggest that the complexes formed by the extraction of lanthanides by TBP:HDBP may be incorporated into the micellar structures and indicate a link between synergy and aggregate formation.
Download or read book Solvent Extraction written by Vladimir S Kislik and published by Elsevier. This book was released on 2011-11-04 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main challenge in modern solvent extraction separation is that most techniques are mainly empirical, specific and particular for narrow fields of practice and require a large degree of experimentation. This concise and modern book provides a complete overview of both solvent extraction separation techniques and the novel and unified competitive complexation/solvation theory. This novel and unified technique presented in the book provides a key for a preliminary quantitative prediction of suitable extraction systems without experimentation, thus saving researchers time and resources. Analyzes and compares both classical and new competitive models and techniques Offers a novel and unified competitive complexation / solvation theory that permits researchers to standardize some parameters, which decreases the need for experimentation at R&D Presents examples of applications in multiple disciplines such as chemical, biochemical, radiochemical, pharmaceutical and analytical separation Written by an outstanding scientist who is prolific in the field of separation science
Download or read book Technical Reports of the Institute of Atomic Energy Kyoto University written by Kyōto Daigaku. Genshi Enerugī Kenkyūjo and published by . This book was released on 1980 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solvent Extraction of Metals written by Anil Kumar De and published by . This book was released on 1970 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solvent Extraction and Liquid Membranes written by Manuel Aguilar and published by CRC Press. This book was released on 2008-04-07 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: The applications of solvent extraction (SX) and liquid membranes (LM) span chemistry, metallurgy, hydrometallurgy, chemical/mineral processing, and waste treatment-making it difficult to find a single resource that encompasses fundamentals as well as advanced applications. Solvent Extraction and Liquid Membranes: Fundamentals and Applicat
Download or read book Solvent Extraction Chemistry of Metals written by Herbert Alwyn Cochrane McKay and published by . This book was released on 1967 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography on Nuclear Reactor Fuel Reprocessing and Waste Disposal Fissionable material recovery written by T. F. Connolly and published by . This book was released on 1960 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solvent extraction Processes for the Separation of the Rare earth Metals written by and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper the application of different classes of solvent-extraction reagents to the recovery and separation of the rare-earth metals is reviewed, and some aspects of the chemistry of these systems are discussed. Solvating extractants such as tri-n-butyl phosphate (TBP) are useful both in the recovery of mixed rare-earth products from nitrate liquors (complexes of the type Ln(NO3)3(TBP)3 being formed in the organic phase) and in the highly selective separation of cerium(IV) from the trivalent lanthanides (when complexes of stoichiometry Ce(NO3)4(TBP)2 or H2Ce(NO3)6(TBP)2 are extracted). Cation-exchange extractants, especially organophosphorus acids such as D2EHPA, are invaluable in the preliminary division of the rare earths into light, middle and heavy fractions, as well as for the subsequent separation of individual metals within these fractions. In some cases, as for the lanthanum-cerium pair, improved separations can be obtained with extractants of the phosphonic and phosphinic acid types. The characteristics of the extraction of the trivalent lanthanides and yttrium by different carboxylic acids can be related to the steric parameter of the substituent alkyl group. For sterically hindered acids such as Versatic 10, complexes of stoichiometry LnA3(HA)3 are extracted, and the pH(0,5) values decrease steadily from lanthanum to lutetium. For non-hindered acids such as 3-cyclohexylpropanoic acid, dimeric complexes such as (LnA3(HA)3)2 are formed, and the pH(0,5) values decrease to a minimum near the middle of the lanthanide series and thereafter increase again. Anion-exchange extractants, particularly quaternary ammonium salts, offer distinct advantages over other reagent types in certain instances, such as the separation of yttrium from the heavy rare-earth fraction in thiocyanate media, and the separation of neodymium from praseodymium in nitrate media. In these systems, complexes of the types (R4N)LnX4 and (R4N)2LnX5 are extracted, where X represents the thiocyanate or nitrate anion. The order of extraction of the individual rare earths is reversed in the nitrate system (La > Ce... > Lu) compared with the thiocyanate system (La
Download or read book Bibliography on Nuclear Reactor Fuel Reprocessing and Waste Disposal Process chemistry and engineering written by T. F. Connolly and published by . This book was released on 1960 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ion Exchange and Solvent Extraction written by Bruce A. Moyer and published by CRC Press. This book was released on 2009-08-19 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growth in the world's nuclear industry, motivated by peaking world oil supplies, concerns about the greenhouse effect, and domestic needs for energy independence, has resulted in a heightened focus on the need for next-generation nuclear fuel-cycle technologies. Ion Exchange and Solvent Extraction: A Series of Advances, Volume 19 provides a com
