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Author : Edward Ellsworth Marbaker
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (318 download)
Download or read book The Separation of Tungsten from Molybdenum ... written by Edward Ellsworth Marbaker and published by . This book was released on 1914 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christopher Andrew Fleming
Publisher :
ISBN 13 : 9780869997253
Total Pages : 34 pages
Book Rating : 4.9/5 (972 download)
Download or read book The Separation of Tungsten and Molybdenum by the Formation of Sulphide Complexes and Extraction Into a Weak-base Resin written by Christopher Andrew Fleming and published by . This book was released on 1985 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Edward Ellsworth Marbaker
Publisher : Forgotten Books
ISBN 13 : 9781391894478
Total Pages : 26 pages
Book Rating : 4.8/5 (944 download)
Download or read book The Separation of Tungsten From Molybdenum written by Edward Ellsworth Marbaker and published by Forgotten Books. This book was released on 2018-09-05 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Separation of Tungsten From Molybdenum: Thesis For this reason, if for no other, it is necessary to know how much of this contaminating metal is present, and hence one of the important problems in modern analysis is to devise a separation of the two metals which will be easy; to carry out and also of the highest accuracy. Up to the present time there have been suggested four methods for the attainment of this end. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author :
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.:/5 (921 download)
Download or read book The Separation of Tungsten and Molybdenum by the Formation of Sulphide Complexes and Extraction Into a Weak-base Resin written by and published by . This book was released on 1985 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The separation of molybdenum from tungsten can be achieved if a solution containing molybdate and tungstate ions is reacted with sulphide ions, and the molybdenum sulphide is extracted with an anion-exchange resin. The separation between molybdenum and tungsten is influenced by factors such as the pH value of the solution, the concentration of sulphide and resin in the solution, and the period of contact between the resin and the metal ions in solution. A fundamental study of the interaction between sulphide ions and molybdate or tungstate ions confirmed a mechanism proposed recently in the literature: MeO4 + nHS + nH+ = MeO4-nSn + nH2O where Me=molybdenum or tungsten and n=1, 2, 3 or 4. In these reaction sequences, each successive step in the reaction (sulphur being substituted for oxygen) is slower than the preceding one, and the molybdate reactions with sulphide are several orders of magnitude faster than the analogous tungsten reactions. As a result, the extent of the complexing of tungsten with sulphide is minimal compared with that of molybdenum in the time span of the extraction experiments. However, the current investigation shows that this is not the cause of selectivity of anion-exchange resins for molybdenum in this system, and that the separation factor between molybdenum and tungsten is much the same for the precursor tungstate anion as it is for the various tungsten sulphide anions. The selectivity of the resin for molybdenum apparently originates from a thermodynamic preference of the amine functional group on the resin for molybdenum sulphide anions over tungstate or tungsten sulphide anions. It is shown that, under optimum conditions, a separation factor of about 30 between molybdenum and tungsten can be achieved in this system.
Author : Donald Durand Peirce
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (726 download)
Download or read book The Separation of Columbium and Tantalum and of Molybdenum and Tungsten written by Donald Durand Peirce and published by . This book was released on 1929 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : 陳冠雄
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (962 download)
Download or read book Study on the Separation and Determination of Tungsten and Molybdenum from Wolframite Found in Kuang Tong written by 陳冠雄 and published by . This book was released on 1950 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Curt Agte
Publisher :
ISBN 13 :
Total Pages : 320 pages
Book Rating : 4.:/5 (31 download)
Download or read book Tungsten and Molybdenum written by Curt Agte and published by . This book was released on 1963 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Erol Ozensoy
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (93 download)
Download or read book Separation of molybdenum from tungsten solutions by solvent extraction using hydrogen peroxide written by Erol Ozensoy and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : 許菉淇
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (962 download)
Download or read book The Separation of Molybdenum, Tungsten, and Other Rare Elements in Wolframite written by 許菉淇 and published by . This book was released on 1952 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. B. Zadra
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.3/5 (91 download)
Download or read book Electrowinning Tungsten and Associated Molybdenum from Scheelite written by J. B. Zadra and published by . This book was released on 1959 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Arthur W. Henderson
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.3/5 (91 download)
Download or read book Extraction of Tungsten from Ore Concentrates by Chlorination written by Arthur W. Henderson and published by . This book was released on 1965 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (921 download)
Download or read book United States Patent : US3173754 : Separation of Molybdenum from Tungsten Values written by and published by . This book was released on 1965 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jai Young Lee
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (85 download)
Download or read book Studies on Separation of Molybdenum, Tungsten, and Rhenium by Sorption Processes written by Jai Young Lee and published by . This book was released on 1967 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W. T. Elwell
Publisher : Elsevier
ISBN 13 : 1483280616
Total Pages : 290 pages
Book Rating : 4.4/5 (832 download)
Download or read book Analytical Chemistry of Molybdenum and Tungsten written by W. T. Elwell and published by Elsevier. This book was released on 2013-10-22 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: International Series of Monographs in Analytical Chemistry, Volume 47: Analytical Chemistry of Molybdenum and Tungsten describes the chemical and instrumental methods of analysis of molybdenum and tungsten. This book is composed of 15 chapters that particularly consider detailed methods for determining these metals in typical samples and their alloys by both classical and modern techniques. The opening chapters discuss the history, occurrence, physico-chemical properties, and applications of molybdenum and tungsten. The succeeding chapters deal with the metals’ sampling, decomposition, separation, and qualitative detection. Considerable chapters are devoted to various chemical and instrumental methods for their analysis, including gravimetry, titrimetry, colorimetry, polarography, amperometry, coulometry, emission and atomic absorption spectroscopy, X-ray spectrophotometry, mass spectrometry, and radiochemical methods. The concluding chapter examines the determination of impurities and alloying elements. This book will prove useful to analytical and inorganic chemists, as well as analytical and inorganic chemistry students.
Author : Jai Y. Lee
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (277 download)
Download or read book Selective Separation of Molybdenum, Tungsten, and Rhenium by Sorption Processes written by Jai Y. Lee and published by . This book was released on 1966 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sang Lae Lee
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (93 download)
Download or read book Solvent extraction of tungsten and molybdenum from acidic solutions written by Sang Lae Lee and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W. H. Lenz
Publisher :
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.3/5 (91 download)
Download or read book The Powder Rolling of Molybdenum and Tungsten written by W. H. Lenz and published by . This book was released on 1961 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
