An experimental and theoretical study of the thermodynamic properties of aqueous electrolytes at very high temperatures and pressures : thesis PDF Download
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Author: Essmaiil Djamali
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: Essmaiil Djamali
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Author: Essmaiil Djamali
Publisher:
ISBN:
Category : Electrolytes
Languages : en
Pages : 1630
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Book Description
New experimental data have extended the thermodynamic properties for four completely ionized electrolytes up to 598 K: NaReO4 ( aq), HReO4 (aq), NaCl (aq), and BaCl2 (aq). New thermodynamic data have been obtained for two electrolytes which have not previously been available except at lower temperatures: HCl (aq, completely ionized) and GdCl3 (aq). Finally, such data for four other electrolytes, Co(ReO4)2, Cu(ReO4)2, Na2SO4 and CsCl from unpublished work in this laboratory were recalculated using new computational methods. Corresponding Gibbs free energies were calculated for all of these electrolytes from 298.15 K to 623.15 K. The enthalpy of solution of GdCl3 at 623.15 K and at p [subscript sat] obtained from this research (−2.8 MJ) is apparently larger than any other recorded enthalpy of a chemical reaction on a mole basis. A new theoretical treatment has been developed for predicting the thermodynamic behavior of electrolytes up to the critical temperature of water (and beyond, into superheated steam) and at pressures up to 1000 MPa.
Author: Harold C. Helgeson
Publisher:
ISBN:
Category : Electrolyte solutions
Languages : en
Pages :
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Author: Harold C. Helgeson
Publisher:
ISBN:
Category : American journal of science
Languages : en
Pages : 654
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Author:
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Category : Dissertations, Academic
Languages : en
Pages : 794
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Book Description
Author: Joseph F. Zemaitis, Jr.
Publisher: John Wiley & Sons
ISBN: 0816903506
Category : Technology & Engineering
Languages : en
Pages : 883
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Book Description
Expertise in electrolyte systems has become increasingly important in traditional CPI operations, as well as in oil/gas exploration and production. This book is the source for predicting electrolyte systems behavior, an indispensable "do-it-yourself" guide, with a blueprint for formulating predictive mathematical electrolyte models, recommended tabular values to use in these models, and annotated bibliographies. The final chapter is a general recipe for formulating complete predictive models for electrolytes, along with a series of worked illustrative examples. It can serve as a useful research and application tool for the practicing process engineer, and as a textbook for the chemical engineering student.
Author:
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Category :
Languages : en
Pages :
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The objective of this research was to combine new experimental measurements on heat capacities, volumes, and association constants of key compounds with theoretical equations of state and with first principles quantum mechanical calculations to generate predictions of thermodynamic data. The resulting thermodynamic data allow quantitative models of geochemical processes at high temperatures and pressures. Research funded by a DOE grant to Prof. Robert Wood at the University of Delaware involved the development of new theoretical equations of state for aqueous solutions of electrolytes and non-electrolytes, methods to estimate thermodynamic data not available from experiments, collection of data on model compounds through experiments and predictions of properties using ab initio quantum mechanics. During the last three and a half years, with support from our DOE grant, 16 papers have been accepted or published, and 3 more are in preparation. Results of this research have been reported in numerous invited and contributed presentations at national and international meetings. For this report, we will briefly comment on the highlights of the last 3 and a half years and give a complete list of papers published, accepted, or submitted during these years.
Author: Joseph F. Zemaitis, Jr.
Publisher: John Wiley & Sons
ISBN: 0470938404
Category : Technology & Engineering
Languages : en
Pages : 876
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Book Description
Expertise in electrolyte systems has become increasingly important in traditional CPI operations, as well as in oil/gas exploration and production. This book is the source for predicting electrolyte systems behavior, an indispensable "do-it-yourself" guide, with a blueprint for formulating predictive mathematical electrolyte models, recommended tabular values to use in these models, and annotated bibliographies. The final chapter is a general recipe for formulating complete predictive models for electrolytes, along with a series of worked illustrative examples. It can serve as a useful research and application tool for the practicing process engineer, and as a textbook for the chemical engineering student.
Author:
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Category :
Languages : en
Pages :
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Book Description
The reactions that cause transformations in organic compounds in the Earth's crust remain mysterious despite decades of research into how fossil fuel resources form. A major reason for this persistent mysteriousness is the failure of many researchers to realize the intimate involvement of water in those transformations. Our goal was to overcome this staggering ignorance by developing the means to calculate the consequences of reactions involving organic compounds and water. We pursued this research from 1989 through 2006, and this report focuses on progress between 2002 and 2006. There were two major obstacles that we overcame in the course of this research. On the one hand, we developed new theoretical equations that allow researchers to make these calculations. On the other hand, we critiqued available data and provided sound means to make estimates in the absence of experimental data for hundreds of organic compounds dissolved in water. Finally, we merged these two lines of research into an interactive web site that allows users to do the calculations with the equations and data. We call the web site ORCHYD for: "ORganic Compounds HYDration properties database," but it is far more than a database since it allows users to make extremely accurate predictions of data that may never have been measured. Our progress greatly exceeded our anticipations, and has permitted many new research investigations that were previously impossible. Despite the abrupt termination of funding for this project by the Department of Energy, we are maintaining the web site for the international scientific community. Major research results were published in eleven scientific papers, so they are all in the public domain. Benefits to the public include a new, rigorous, quantitative approach to testing ideas about the fate of organic compounds dissolved in water. These tests can be applied to geochemistry or to industrial processes. The increasing use of water as a solvent in Green Chemistry and Sustainable Industrial Practices, means that there is a pressing need for data and calculations of the type we have provided and enabled. Applications include: improved efficiency of industrial processes, improvements in health protections for workers who encounter organic solvents and other organic compounds, predictive tools for cleaning up landfills and other toxic waste, and the potential for a greater understanding of how petroleum forms.
Author: Norihiro Matubayasi
Publisher: CRC Press
ISBN: 1439880875
Category : Science
Languages : en
Pages : 226
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Book Description
Surface tension provides a thermodynamic avenue for analyzing systems in equilibrium and formulating phenomenological explanations for the behavior of constituent molecules in the surface region. While there are extensive experimental observations and established ideas regarding desorption of ions from the surfaces of aqueous salt solutions, a more successful discussion of the theory has recently emerged, which allows the quantitative calculation of the distribution of ions in the surface region. Surface Tension and Related Thermodynamic Quantities of Aqueous Electrolyte Solutions provides a detailed and systematic analysis of the properties of ions at the air/water interface. Unifying older and newer theories and measurements, this book emphasizes the contributions of simple ions to surface tension behavior, and the practical consequences. It begins with a general discussion on Gibbs surface thermodynamics, offering a guide to his theoretical insight and formulation of the boundary between fluids. The text then discusses the thermodynamic formulae that are useful for practical experimental work in the analysis of fluid/fluid interfaces. Chapters cover surface tension of pure water at air/water and air/oil interfaces, surface tension of solutions and the thermodynamic quantities associated with the adsorption and desorption of solutes, and surface tension of simple salt solutions. They also address adsorption of ions at the air/water interface, surface tension of solutions and the effect of temperature, adsorption from mixed electrolyte solutions, and thermodynamic properties of zwitterionic amino acids in the surface region. Focusing on the thermodynamic properties of ions at air/fluid interfaces, this book gives scientists a quantitative, rigorous, and objectively experimental methodology they can employ in their research.
