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Chemistry

Thermochemical properties

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Displaying 126 - 150 of 403

Data Formats for Elementary Gas Phase Kinetics: Part 3. Reaction Classification

April 20, 2015
Author(s)
Donald R. Burgess Jr., Jeffrey A. Manion, Carrigan J. Hayes
A method denoted InChI ER has been developed to describe and identify elementary reactions in a standard computer-readable notation by extending the IUPAC International Chemical Identifier (InChI) formalism. Five additional hierarchical InChI ER layers

Reference correlations for the viscosity and thermal conductivity of fluids over extended range of conditions: n-hexane in the vapor, liquid, and supercritical regions

March 11, 2015
Author(s)
Richard A. Perkins, Marcia L. Huber, Marc J. Assael, Efthimia K. Mihailidou, Sofia K. Mylona, Evita J. Sykioti
This article summarizes the correlation procedures developed for IUPAC Project 2012-040-1-100 (Reference correlations for the thermal conductivity and viscosity of fluids over extended range of conditions (vapor, liquid and supercritical region)). This

An Equation of State for the Thermodynamic Properties of Cyclohexane

December 5, 2014
Author(s)
Yong Zhou, Jun Liu, Steven Penoncello, Eric Lemmon
In this work, an equation of state for cyclohexane has been developed using the Helmholtz energy as the fundamental property with independent variables of density and temperature. Multi-property fitting technology was used to fit the equation of state that

Reference Correlation of the Thermal Conductivity of o-Xylene, m-Xylene, p-Xylene, and Ethylbenzene from the Triple Point to 700 K and Moderate Pressures

November 21, 2014
Author(s)
Sofia K. Mylona, K.D. Antoniadis, Marc J. Assael, Marcia L. Huber, Richard A. Perkins
This paper contains new, representative reference equations for the thermal conductivity of o-, m-, p- xylene and ethylbenzene. The equations are based upon a body of experimental data that has been critically assessed for internal consistency and for

Preface

November 19, 2014
Author(s)
Daniel G. Friend, Marcia L. Huber, Neil T. Wright
This is a preface for a special issue of the International Journal of Thermophysics that contains papers presented at the 18th Symposium on Thermophysical Properties.

Progress toward new Reference Correlations for the Transport Properties of Carbon Dioxide

September 10, 2014
Author(s)
Allan H. Harvey, Marcia L. Huber, Arno R. Laesecke, Chris D. Muzny, Richard A. Perkins
The thermophysical properties of carbon dioxide are essential for accurate process design and optimization. While the thermodynamic properties of CO2 are available with excellent accuracy from the reference-quality equation of state of Span and Wagner, the

Sealed Gravitational Capillary Viscometers for Volatile Liquids

July 7, 2014
Author(s)
Arno R. Laesecke
The evolution of sealed gravitational capillary viscometers for measurements of volatile liquids is reviewed. Two corrections need to be applied to measurements with them: (i) the vapor buoyancy correction and, if coiled capillaries are used, (ii) the

Viscosity Measurements of DNA Solutions with and without Condensing Agents

July 7, 2014
Author(s)
Arno D. Laesecke, Jessica L. Burger
Aqueous DNA solutions at three concentrations were studied as model sputum by viscosity measurements at ambient pressure. Initial measurements at 25 °C, 37.78 °C, and 50 °C indicated a viscosity increase toward 50 °C. This phenomenon was studied by

Transport Properties of Fluids near Critical Points

June 5, 2014
Author(s)
Jan V. Sengers, Richard A. Perkins
This chapter reviews the currently available information concerning the behavior of transport properties near the vapor-liquid critical point of fluids and fluid mixtures. Special attention is devoted to the behavior of the thermal conductivity which

Acoustic Techniques for Measuring Transport Properties of Gases

May 22, 2014
Author(s)
Keith A. Gillis, Michael R. Moldover
We describe the principles, techniques, and performance of acoustic resonators used to measure the shear viscosity, the thermal conductivity, and the bulk viscosity in gases. We developed the Greenspan acoustic viscometer at NIST, where colleagues used it

Viscosity-ratio measurements with capillary viscometers

May 20, 2014
Author(s)
Robert F. Berg, Eric F. May, Michael R. Moldover
Viscosity-ratio measurements made with capillary viscometers exploit the accurate values of the viscosity of helium resulting from ab initio calculations. Accurate values of the argon-to-helium viscosity ratio are now used for primary acoustic thermometry

ASME International Steam Tables for Industrial Use, Third Edition

February 28, 2014
Author(s)
Allan H. Harvey, William T. Parry, James C. Bellows, John S. Gallagher, Richard D. Harwood
This is an update of the standard ASME "Steam Tables" book, giving tables and charts of thermodynamic and transport properties for water and steam, along with background text describing the tables and calculations. The main change from the previous (2nd)

ACOUSTIC GAS THERMOMETRY

January 16, 2014
Author(s)
Michael R. Moldover, Roberto M. Gavioso, James B. Mehl, Laurent Pitre, Michael de Podesta, Jintao Zhang
We review the principles, techniques and results from primary acoustic gas thermometry (AGT). Since the establishment of ITS-90, the International Temperature Scale of 1990, spherical and quasi-spherical cavity resonators have been used to realize primary

Perfluorohexane Adsorption in BCR-704 Faujasite Zeolite Benchmark Studies for the Seventh Industrial Fluid Properties Simulation Challenge

January 6, 2014
Author(s)
Richard B. Ross, John K. Brennan, Kevin A. Frankel, Jonathan D. Moore, Raymond D. Mountain, Joshua D. Moore, Riaz Ahmad, Matthias Thommes, Vincent K. Shen, Nathan E. Schultz, Daniel Siderius, Kenneth D. Smith
The primary goal of the seventh industrial fluid properties simulation challenge was to test the ability of molecular simulation methods to predict the adsorption of organic adsorbates in zeolitic materials. The challenge focused, in particular, on the
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