Download or read book An experimental and theoretical study of the thermodynamic properties of aqueous electrolytes at very high temperatures and pressures thesis written by Essmaiil Djamali and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental and Theoretical Study of the Thermodynamic Properties of Aqueous Electrolytes at Very High Temperatures and Pressures written by Essmaiil Djamali and published by . This book was released on 2005 with total page 1630 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 Finally, such data for four other electrolytes, Co(ReO4)2, Cu(ReO4)2, Na2SO4 and CsCl from unpublished work in this laboratory were recalculated using new computational methods.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.
Download or read book Theoretical Prediction of the Thermodynamic Properties of Aqueous Electrolytes at High Pressures and Temperatures written by Harold C. Helgeson and published by . This book was released on 1977* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical Prediction of the Thermodynamic Behavior of Aqueous Electrolytes at High Pressures and Temperatures written by Harold C. Helgeson and published by . This book was released on 1982 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2005 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Aqueous Electrolyte Thermodynamics written by Joseph F. Zemaitis, Jr. and published by John Wiley & Sons. This book was released on 1986-06-15 with total page 883 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Development of an Experimental Data Base and Theories for Prediction of Thermodynamic Properties of Aqueous Electrolytes and Nonelectrolytes of Geochemical Significance at Supercritical Temperatures and Pressures written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Handbook of Aqueous Electrolyte Thermodynamics written by Joseph F. Zemaitis, Jr. and published by John Wiley & Sons. This book was released on 2010-09-16 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Development of an Experimental Database and Theories for Prediction of Thermodynamic Properties of Aqueous Electrolytes and Nonelectrolytes of Geochemical Significance at Supercritical Temperatures and Pressures written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Surface Tension and Related Thermodynamic Quantities of Aqueous Electrolyte Solutions written by Norihiro Matubayasi and published by CRC Press. This book was released on 2013-09-09 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Proceedings of the Workshop on Geochemical Modeling written by and published by . This book was released on 1986 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of an Experimental Data Base and Theories for Prediction of Thermodynamic Properties of Aqueous Electrolytes and Nonelectrolytes of Geochemical Significance at Supercritical Temperatures and Pressures Annual Performance Report written by and published by . This book was released on 1992 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project is divided into method experimental measurements, theoretical development, and geochemical applications. We have completed experimental volumetric measurements on aqueous solutions of CO2 H2S, CH4, NH3 and B(OH)3 at 25 to 432°C and 280 and 350 bar. A vibrating tube densitometer that allows density measurements near bubble point and also measures the bubble pressure was developed and used to measure densities and bubble pressures of aqueous Co2. Heat capacity measurements should be completed by the end of the grant period. Simulations of models for methane in water at temperatures to 1000°C are in progress. In order to facilitate these free energy calculations the possible errors associated with the calculations have been explored in two papers (Wood, 1991; Wood et al., 1991) and methods of controlling and estimating these errors have been developed. Applications of the new data to geochemical processes is now possible. Efforts have focussed on extracting equilibrium constants for carbonic acid dissociation at supercritical condition from published experiments on mineral equilibria in H20-CO2 fluids (Boehlke and Shock, 1990; and in prep.). As a result, estimates of pKa for carbonic acid are now available at temperatures from 300 to 750°C and pressures from 1 to 7 kilobars. They will be combined with {bar V}{sup {degree}} and {bar C}p{sup {degree}} data for CO2(aq) to improve geochemical calculations.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1988 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Activity Coefficients in Electrolyte Solutions written by Kenneth S. Pitzer and published by CRC Press. This book was released on 2018-05-04 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book was first published in 1991. It considers the concepts and theories relating to mostly aqueous systems of activity coefficients.
Download or read book Thermodynamic Properties of Aqueous Solutions at High Temperatures written by Chia-tsun Liu and published by . This book was released on 1971 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low Grade Metamorphism of Mafic Rocks written by Peter Schiffman and published by Geological Society of America. This book was released on 1995-01-01 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: The collective outgrowth of presentations at a September 1992 meeting titled The Transition from Basalt to Metabasalt: Environments, Processes, and Petrogenesis, held in Davis, California under the auspices of IGCP Project 294, to discuss recent advances and to identify important areas for further
Download or read book Fluids in the Crust written by K. Shmulovich and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: For much of the 20th century, scientific contacts between the Soviet Union and western countries were few and far between, and often super ficial. In earth sciences, ideas and data were slow to cross the Iron Curtain, and there was considerable mutual mistrust of diverging scient ific philosophies. In geochemistry, most western scientists were slow to appreciate the advances being made in the Soviet Union by os. Korz hinskii, who put the study of ore genesis on a rigorous thermodynamic basis as early as the 1930s. Korzhinskii appreciated that the most fun damental requirement for the application of quantitative models is data on mineral and fluid behaviour at the elevated pressures and temper atures that occur in the Earth's crust. He began the work at the Institute of Experimental Mineralogy (IEM) in 1965, and it became a separate establishment of the Academy of Sciences in Chernogolovka in 1969. The aim was to initiate a major programme of high P-T experimental studies to apply physical chemistry and thermodynamics to resolving geological problems. For many years, Chernogolovka was a closed city, and western scient ists were unable to visit the laboratories, but with the advent of peres troika in 1989, the first groups of visitors were eagerly welcomed to the IEM. What they found was an experimental facility on a massive scale, with 300 staff, including 80 researchers and most of the rest pro viding technical support.
