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Sulfur Isotope Separation By Distillation
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Book Synopsis Sulfur-isotope Separation by Distillation by :
Download or read book Sulfur-isotope Separation by Distillation written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Sulfur-isotope separation by low-temperature distillation of hydrogen sulfide was studied in an 8-m, 25-mm diameter distillation column. Column temperature was controlled by a propane-propylene heat pipe. Column packing HETP was measured using nitric oxide in the column. The column was operated at pressures from 45 to 125 kPa. The relative volatility of S-32 vs. S-34 varied from 1.0008 to 1.0014.
Book Synopsis Sulfur and Selenium Isotope Separation by Distillation. [ch3SH, Dimethy Selenide, H2Se]. by :
Download or read book Sulfur and Selenium Isotope Separation by Distillation. [ch3SH, Dimethy Selenide, H2Se]. written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Sulfur and selenium isotopes are used for labeled compounds and as precursors for radioisotope production; however, both limited availability and high costs are problems. A new method is needed for large-scale separation of these isotopes. Experimental distillation columns were used to measure isotopic separations for sulfur and selenium compounds. The maximum total isotope separation of 32S vs. 34S were 1.127 for H2S, 1.048 for COS, 0.838 for SF4, and 1.058 for CH3SH. Relative volatilities of 32S vs. 34S are 1.0006 for COS and 0.9976 for SF4. There is a reverse isotope effect for carbon in COS. No isotopic separation was observed for dimethyl selenide. The lower mass selenium isotopes in H2Se are more volatile. Distillation is a promising method for separating sulfur isotopes on a production scale. Existing distillation technology produced separated isotopes with an effect similar to that found for sulfur in SF4. 8 refs., 2 tabs.
Book Synopsis The Diffusion-distillation Process for the Separation of Isotopes by : C. W. Williamson
Download or read book The Diffusion-distillation Process for the Separation of Isotopes written by C. W. Williamson and published by . This book was released on 1953 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Diffusion-distillation Process for the Separation of Isotopes by : J. H. Atkins
Download or read book The Diffusion-distillation Process for the Separation of Isotopes written by J. H. Atkins and published by . This book was released on 1954 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Diffusion-distillation Process for the Separation of Isotopes by : C. W. Williamson
Download or read book The Diffusion-distillation Process for the Separation of Isotopes written by C. W. Williamson and published by . This book was released on 1953 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Isotope Separation and Isotope Exchange by :
Download or read book Isotope Separation and Isotope Exchange written by and published by . This book was released on 1953 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Separation of Sulfur Isotopes written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Sulfur isotopes are continuously separated and enriched using a closed loop reflux system wherein sulfur dioxide (SO.sub. 2) is reacted with sodium hydroxide (NaOH) or the like to form sodium hydrogen sulfite (NaHSO.sub. 3). Heavier sulfur isotopes are preferentially attracted to the NaHSO.sub. 3, and subsequently reacted with sulfuric acid (H.sub. 2 SO.sub. 4) forming sodium hydrogen sulfate (NaHSO.sub. 4) and SO.sub. 2 gas which contains increased concentrations of the heavier sulfur isotopes. This heavy isotope enriched SO.sub. 2 gas is subsequently separated and the NaHSO.sub. 4 is reacted with NaOH to form sodium sulfate (Na.sub. 2 SO.sub. 4) which is subsequently decomposed in an electrodialysis unit to form the NaOH and H.sub. 2 SO.sub. 4 components which are used in the aforesaid reactions thereby effecting sulfur isotope separation and enrichment without objectionable loss of feed materials.
Book Synopsis Sulfur Isotope Separation by Dissociative Electron Attachment by : John Edward Allen
Download or read book Sulfur Isotope Separation by Dissociative Electron Attachment written by John Edward Allen and published by . This book was released on 1976 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Theory of Isotope Separation as Applied to the Large-scale Production of U235 by : Karl P. Cohen
Download or read book The Theory of Isotope Separation as Applied to the Large-scale Production of U235 written by Karl P. Cohen and published by . This book was released on 1951 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Isotope Separation and Isotope Exchange by :
Download or read book Isotope Separation and Isotope Exchange written by and published by . This book was released on 1959 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Applications of Isotopically Labelled Compounds, 1988 by : Thomas A. Baillie
Download or read book Synthesis and Applications of Isotopically Labelled Compounds, 1988 written by Thomas A. Baillie and published by Elsevier Publishing Company. This book was released on 1989 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Separation of isotopes by distillation by : Yehiel Lehrer
Download or read book Separation of isotopes by distillation written by Yehiel Lehrer and published by . This book was released on 1961 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Isotope Separation and Isotope Exchange by : G. M. Begun
Download or read book Isotope Separation and Isotope Exchange written by G. M. Begun and published by . This book was released on 1954 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Carbon Isotope Separation by Absorptive Distillation. [77. 4 to 114. 3°K]. by :
Download or read book Carbon Isotope Separation by Absorptive Distillation. [77. 4 to 114. 3°K]. written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The feasibility of separating carbon isotopes by absorptive distillation has been studied for CO absorption by cryogenic solvents. Phase equilibrium, isotopic separation, and mass transfer data were taken between 77.4 and 114.3 K for the following solvents: propane, propylene, 1:1 propane-propylene, 1-butene, isobutane and nitrogen. Carbon monoxide solubility followed Henry's Law, with a maximum experimental solubility of 6.5 mole percent. Isotopic separation between CO in the gas and liquid phases using hydrocarbon solvents was several times that for pure CO vapor-liquid equilibrium. The maximum observed isotopic separation factor was 1.029 at 77.4 K with the propane-propylene solvent mixture. Mass transfer measurements yielded calculated HETP's of 2 to 5 cm for a possible separation system. An attempt has been made to correlate isotopic separation data using Hildebrand's theory of solutions. The differential absorption of isotopic CO species is expressed as a difference in solubility of the isotopic CO molecules. Data for propane, propylene, and 1-butene show approximately the same behavior at varying temperatures.
Book Synopsis Isotopes for Medicine and the Life Sciences by : Institute of Medicine
Download or read book Isotopes for Medicine and the Life Sciences written by Institute of Medicine and published by National Academies Press. This book was released on 1995-01-27 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radioactive isotopes and enriched stable isotopes are used widely in medicine, agriculture, industry, and science, where their application allows us to perform many tasks more accurately, more simply, less expensively, and more quickly than would otherwise be possible. Indeed, in many casesâ€"for example, biological tracersâ€"there is no alternative. In a stellar example of "technology transfer" that began before the term was popular, the Department of Energy (DOE) and its predecessors has supported the development and application of isotopes and their transfer to the private sector. The DOE is now at an important crossroads: Isotope production has suffered as support for DOE's laboratories has declined. In response to a DOE request, this book is an intensive examination of isotope production and availability, including the education and training of those who will be needed to sustain the flow of radioactive and stable materials from their sources to the laboratories and medical care facilities in which they are used. Chapters include an examination of enriched stable isotopes; reactor and accelerator-produced radionuclides; partnerships among industries, national laboratories, and universities; and national isotope policy.
Book Synopsis Synthesis and Applications of Isotopically Labeled Compounds by : William P. Duncan
Download or read book Synthesis and Applications of Isotopically Labeled Compounds written by William P. Duncan and published by Elsevier Science & Technology. This book was released on 1983 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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