Overview

This book addresses graduate students and researchers wishing to better understand the liquid and supercritical fluid states of matter, presenting a single cohesive treatment of the liquid and supercritical fluid states using the gas-like and solid-like approaches. Bringing this information together into one comprehensive text, this book outlines how our understanding of the liquid and supercritical fluid states is applied and explores the use of supercritical fluids in daily life and in research, for example in power generation, and their existence in planetary interiors. Presents a single coherent treatment of the key knowledge about the liquid and supercritical fluid states Provides comprehensive survey of key fluid properties from the latest experiments and applies our theoretical knowledge to understand the behaviour of these real fluids Explores the consequences of recent advances in the field on our understanding in industry, nature, and in interdisciplinary research, including planetary science

Full Product Details

Author:   John E. Proctor (University of Salford; University of Manchester, UK|) ,  Helen E. Maynard-Casely
Publisher:   Taylor & Francis Ltd
Imprint:   CRC Press
Weight:   0.453kg
ISBN:  

9780367549350

ISBN 10:   0367549352
Pages:   300
Publication Date:   29 April 2022
Audience:   College/higher education ,  Postgraduate, Research & Scholarly
Format:   Paperback
Publisher's Status:   Active
Availability:   In Print  
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Table of Contents

Contents Preface...................................................................................................xi Useful Equations and Definitions.......................................................xv Definitions.......................................................................................... xxi 1 Some Remarks on the Gas State 1.1 Equation of State (EOS) of Real Gases................................................................ 1 1.1.1 The Van der Waals Equation................................................................. 1 1.1.2 The Virial Equation.................................................................................2 1.2 Order in the Gas State............................................................................................3 1.3 Heat Capacity of Gases......................................................................................... 4 1.3.1 How Well Does This Model Work?...................................................... 4 1.4 Vibrational Raman Spectroscopy of Gases........................................................6 1.5 Viscosity of Gases...................................................................................................8 1.6 Why Are Liquids so Difficult?............................................................................ 10 1.6.1 Molecular Dynamics (MD)................................................................. 10 1.6.2 The Fundamental EOS (Section 3.3)....................................................11 1.6.3 Treat the Fluid as Gas-Like.................................................................. 12 1.6.4 Treat the Fluid as Solid-Like................................................................ 12 References.......................................................................................................................... 13 2 The Vapour Pressure Curve and the Liquid State Close to the Vapour Pressure Curve 2.1 Classical Versus Quantum Liquids.................................................................... 15 2.2 The Transition Across the Vapour Pressure Curve......................................... 17 2.3 The Clausius-Clapeyron Equation.....................................................................19 2.3.1 Validity of the Clausius-Clapeyron Equation.................................. 20 2.4 The Critical Point................................................................................................. 20 2.4.1 Critical Constants and the Van Der Waals Equation of State....................................................................................25 2.5 Summary............................................................................................................... 29 References......................................................................................................................... 30 3 Equations of State for Fluids 3.1 Cubic EOS Based on the Van der Waals Equation..........................................32 3.1.1 Volume Translation of Cubic EOS..................................................... 34 3.2 The Carnahan-Starling EOS...............................................................................35 3.3 The Fundamental EOS........................................................................................ 36 3.3.1 Ideal Gas Component of the Helmholtz Function.......................... 36 3.3.2 Residual Component of the Helmholtz Function............................39 3.3.3 Fitting the Helmholtz Function to the Experimental Data................................................................................39 3.4 Conclusions...........................................................................................................41 3.4.1 For What Fluids Is a Fundamental EOS Available?.........................41 3.4.2 How Can We Test the Validity of an EOS?........................................41 3.4.3 What Is the Best Way to Implement Your Chosen EOS? ............................................................................................................... 44 References......................................................................................................................... 46 4 The Liquid State Close to the Melting Curve (I): Static Properties 4.1 Density and Bulk Modulus of Fluids Close to the Melting Curve............... 47 4.1.1 Density of Fluid Ar Close to the Melting Curve.............................. 48 4.1.2 Density and Bulk Modulus of Fluid N2 Close to the Melting Curve................................................................................ 49 4.2 Elastic Neutron and X-ray Diffraction from Liquids Close to the Melting Curve....................................................................................................... 51 4.2.1 Distinctions Between X-ray and Neutron Diffraction Experiments......................................................................53 4.2.2 Fourier Transform of Fluid Diffraction Data to Obtain g (r) ....................................................................................55 4.2.3 Fourier Transform of Modified Fluid Diffraction Data to Obtain g (r) ..................................................................................................58 4.2.4 Comparison of Diffraction Data to Simulated Fluid Structures in Reciprocal Space............................................................61 4.2.5 Relation Between g (r), the Partition Function, Internal Energy, and Pressure.............................................................................63 4.2.6 Relation Between g (r) and Entropy....................................................65 4.2.7 Relation Between g (r) and Co-ordination Number (CN)............. 66 4.3 Short-Range Order and Phase Transitions in Fluids Close to the Melting Curve...................................................................................................... 67 4.3.1 Co-ordination Number....................................................................... 67 4.3.2 Liquid-Liquid Phase Transitions........................................................ 67 4.4 Equations to Fit the Melting Curve on the P,T Phase Diagram................... 69 4.5 What Happens to the Melting Curve in the High P,T Limit?........................72 4.6 Summary................................................................................................................74 References..........................................................................................................................77 5 The Liquid State Close to the Melting Curve (II): Dynamic Properties 5.1 Phonon Theory of Liquids...................................................................................79 5.1.1 Frenkel and Maxwell Models..............................................................79 5.1.2 Prediction of Liquid Heat Capacity....................................................82 5.2 Raman Spectroscopy of Liquids and Supercritical Fluids Close to the Melting Curve................................................................................ 88 5.2.1 Grüneisen Model for Vibrational Raman Peak Position ........................................................................................................................90 5.2.2 Hard Sphere Fluid Theory of Vibrational Raman Peak Positions.......................................................................... 91 5.2.3 Peak Position of Rotational Raman Spectra.....................................93 5.2.4 Peak Intensity and Linewidth of Fluid Raman Spectra..................93 5.2.5 Prediction of Fluid Raman Spectra Using MD............................... 94 5.3 Brillouin Spectroscopy of Liquids Close to the Melting Curve................... 96 5.4 Inelastic Neutron and X-ray Scattering from Liquids Close to the Melting Curve................................................................................................ 98 5.4.1 Distinction Between Neutron and X-ray Scattering....................... 98 5.4.2 The Scattered Intensity........................................................................101 5.4.3 What Can We Learn from Inelastic Neutron and X-ray Scattering from Liquids?.................................................................... 103 5.5 Summary and Outlook......................................................................................107 References........................................................................................................................108 6 Beyond the Critical Point 6.1 The Widom Lines................................................................................................. 111 6.1.1 A Simple Phenomenological Fitting Procedure for the Widom Lines..................................................................................114 6.1.2 Some Examples of Widom Line Paths..............................................117 6.1.3 The Widom Lines as a Function of Reduced Temperature......................................................................... 119 6.1.4 The Widom Lines in Relation to the Vapour Pressure Curve ..............................................................................................120 6.1.5 The Widom Lines as a Function of Density.....................................121 6.2 The Fisher-Widom Line......................................................................................121 6.3 The Joule-Thomson Inversion Curve...............................................................123 6.4 A General Approach to Inversion Curves......................................................127 6.4.1 First Order Inversion Curves: Definitions.......................................128 6.4.2 First Order Inversion Curves: Path on the P,T Phase Diagram ........................................................................................................................132 6.4.3 Zeroth and First Order Inversion Curves: Can We Measure Them? Do We Need to Measure Them?...........................134 6.4.4 Use of Zeroth Order and First Order Inversion Curves to Verify Equations of State....................................................................136 6.5 The Frenkel Line.................................................................................................138 6.5.1 Definitions of the Frenkel Line.........................................................138 6.5.2 The Frenkel Line and the Widom Lines........................................... 147 6.5.3 Positive Sound Dispersion Above TC................................................148 6.5.4 Termination of the Frenkel Line.......................................................150 6.6 Conclusions.........................................................................................................150 References.........................................................................................................................151 7 Miscibility in the Liquid and Supercritical Fluid States 7.1 Introduction........................................................................................................ 153 7.2 Raoult’s Law, Henry’s Law, and the Lever Rule.............................................154 7.2.1 Raoult’s Law and Henry’s Law..........................................................154 7.2.2 Change in Gibbs Function on Mixing of Raoultian Liquids.................................................................................. 156 7.2.3 Phase Equilibria in Miscible Fluids: The Lever Rule.....................158 7.3 Hildebrand Theory of Mixing..........................................................................158 7.3.1 Internal Energy of Fluid Mixtures Using Hildebrand Theory................................................................................ 158 7.3.2 P, V, T EOS for Mixtures Using Hildebrand Theory.....................160 7.4 Application of the Fundamental EOS to Mixtures....................................... 162 7.5 Some Comments on Experimental Study of Supercritical Fluid Mixtures............................................................................................................... 163 7.5.1 Preparation of Fluid Mixtures in the Diamond Anvil Cell (DAC)................................................................................. 163 7.5.2 Raman Spectra of Fluid Mixtures; Cohesive Energy Density ....................................................................................................... 164 7.6 Open Questions in the Study of Dense Fluid Mixtures............................... 165 7.6.1 Is Hydrophobicity an Absolute Property?....................................... 165 7.6.2 Miscibility in the Supercritical Fluid State......................................166 References........................................................................................................................ 167 8 Applications of Supercritical Fluids 8.1 Applications of Supercritical Fluids in Power Generation Cycles..............169 8.1.1 Efficiency of Thermodynamic Cycles...............................................169 8.1.2 Use of Supercritical H2O in Power Generation.............................. 170 8.1.3 Use of Supercritical CO2 in Power Generation................................171 8.1.4 Use of Supercritical N2 in Power Generation.................................. 173 8.2 Use of Supercritical Fluids in Food Processing............................................. 175 8.2.1 Decaffeination...................................................................................... 175 8.2.2 Other Food Processing Applications............................................... 175 8.3 Supercritical CO2 Cleaning and Drying......................................................... 175 8.4 Chromatography................................................................................................. 176 8.5 Crystal and Nanoparticle Growth................................................................... 176 8.6 Exfoliation of Layered Materials......................................................................177 References........................................................................................................................ 178 9 Supercritical Fluids in Planetary Environments 9.1 Introduction.........................................................................................................181 9.2 Mineral and Material Processes with Supercritical Fluids.......................... 182 9.2.1 Dissolution of Minerals...................................................................... 182 9.2.2 Mineral Reactions...............................................................................184 9.2.3 Partition of Elements.......................................................................... 185 9.3 Supercritical Fluids within Surface and Subsurface Environments........... 185 9.3.1 Earth......................................................................................................186 9.3.2 Other Terrestrial Planets.................................................................... 187 9.3.3 Dwarf Planets and Icy Satellites........................................................190 9.4 Supercritical Fluids within Planetary Interiors.............................................190 9.4.1 Jupiter and Saturn................................................................................191 9.4.2 Uranus and Neptune...........................................................................192 9.4.3 Transitions in the Supercritical Fluids; Effect on the Gas Giants................................................................................194 9.5 Summary..............................................................................................................194 References........................................................................................................................194 Appendix A: Reference Data on Selected Atomic Fluids A.1 Table of Phase Change Properties for He, Ne, and Ar..................................199 A.2 Phase Diagram of He.........................................................................................199 A.3 Phase Diagram of Ne........................................................................................ 205 A.4 Phase Diagram of Ar......................................................................................... 208 References........................................................................................................................210 Appendix B: Reference Data on Selected Molecular Fluids B.1 Table of Phase Change Properties for CH4, CO2, H2, H2O, and N2...................................................................................................211 B.2 Phase Diagram of CH4........................................................................................211 B.3 Phase Diagram of CO2....................................................................................... 217 B.4 Phase Diagram of H2......................................................................................... 220 B.5 Phase Diagram of H2O...................................................................................... 226 B.6 Phase Diagram of N2.......................................................................................... 231 References....................................................................................................................... 234 Appendix C: Some Thermodynamic and Diffraction Derivations C.1 Thermodynamic Quantities..............................................................................237 C.1.1 Application of the First Law of Thermodynamics.........................237 C.1.2 Adiabatic Changes; Enthalpy........................................................... 238 C.1.3 Isothermal Changes; Helmholtz Function..................................... 238 C.1.4 Isobaric and Isothermal Changes; Gibbs Function...................... 239 C.1.5 Constraints on the P, V, T EOS of the Ideal Fluid and the Condensing Fluid (Brown’s Conditions)........................................ 239 C.2 Fourier Transform Treatment of Diffraction................................................ 242 Appendix D: The Diamond Anvil Cell (DAC) D.1 Design of the DAC............................................................................................. 245 D.2 Loading of Fluid and Fluid Mixture Samples into the DAC...................... 247 D.2.1 Pure Fluids........................................................................................... 247 D.2.2 Fluid Mixtures.................................................................................... 249 D.3 High Temperatures in the DAC...................................................................... 249 D.3.1 Resistive Heating Experiments in the DAC................................... 250 D.3.2 Laser Heating in the DAC.................................................................. 251 D.4 Pressure Measurement in the DAC..................................................................252 References....................................................................................................................... 254 Appendix E: Code for Selected Computational Problems E.1 Boiling Transition in the van der Waals Fluid...............................................255 E.1.1 Estimate of Pb...................................................................................... 256 E.1.2 Evaluation of ΔG..................................................................................257 E.1.3 Octave Code for van der Waals’ Boiling Transition......................257 E.2 Prediction of Fluid Heat Capacity.................................................................. 260 E.2.1 Octave Code for Heat Capacity Calculations................................ 260 Bibliography...................................................................................... 263 Index................................................................................................... 267

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John E. Proctor is a senior lecturer in physics at the University of Salford and is head of the Materials and Physics Research Group. He specialises in condensed matter physics, particularly the study of fluids and solids under extreme pressure and temperature, principally through X-ray and neutron diffraction along with optical spectroscopy. His research is regularly published in leading international peer-reviewed journals. He completed his Ph.D. (2007) from the University of Manchester and his M.Phys. (2004) from the University of Oxford. He is one of the authors of An Introduction to Graphene and Carbon Nanotubes (CRC Press, 2017).

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