Publications Portal

You searched on:
Topic Area: Chemical Engineering
Processing

Displaying records 11 to 20 of 97 records.
Resort by: Date / Title

11. Thermodynamics of the hydrolysis reactions of 1-naphthyl acetate, 4-nitrophenyl acetate, and 4-nitrophenyl -L-arabinofuranoside
Topic: Chemical Engineering & Processing
Published: 4/2/2010
Authors: Stephen R. Decker, Robert Nathan Goldberg, Brian E Lang, William Michener
Abstract: Microcalorimetry, high-performance liquid chromatography (HPLC), and liquid chromatography-mass spectrometry (LC-MS) have been used to conduct a thermodynamic investigation of the hydrolysis reactions: {1-naphthyl acetate(aq) + H2O(l) = 1 naphthol(a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904030

12. Relating Complex Fluid Composition and Thermophysical Properties with the Advanced Distillation Curve Approach
Topic: Chemical Engineering & Processing
Published: 3/17/2010
Authors: Thomas J Bruno, Lisa S. Ott, Tara M Lovestead, Marcia L Huber
Abstract: Complex fluids have long posed a significant challenge in our ability to characterize and model fluid properties. Here, we consider complex fluids to be mixtures with many components that can differ significantly in polarity and polarizability. The ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903208

13. Density and Speed of Sound Measurements of Hexadecane
Topic: Chemical Engineering & Processing
Published: 1/7/2010
Authors: Stephanie L Outcalt, Arno R Laesecke, Tara J Fortin
Abstract: The density and speed of sound of hexadecane have been measured using two instruments. Both instruments use the vibrating-tube method for measuring density. Ambient pressure (83 kPa) density and speed of sound measurements were carried out with a r ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902259

14. Optimizing Acoustic Measurements of the Boltzmann Constant
Topic: Chemical Engineering & Processing
Published: 11/22/2009
Author: Michael R Moldover
Abstract: We review the progress in acoustic metrology of gases that has occurred since the 1988 measurement of the universal gas constant {I}R{/I} using a spherical acoustic resonator. The advances in understanding resonators and in calculating the thermophys ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902117

15. Perturbations from Ducts on the Modes of Acoustic Thermometers
Series: Journal of Research (NIST JRES)
Topic: Chemical Engineering & Processing
Published: 9/1/2009
Authors: Keith A Gillis, Michael R Moldover, Hong Lin
Abstract: We examine the perturbations of the modes of an acoustic thermometer caused by circular ducts used either for gas flow or as acoustic waveguides coupled to remote transducers. We calculate the acoustic admittance of circular ducts using a model based ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902237

16. Reference measurements of Hydrogen's Dielectric Permittivity
Topic: Chemical Engineering & Processing
Published: 8/10/2009
Authors: James W Schmidt, Michael R Moldover, Eric May
Abstract: We used a quasi-spherical cavity resonator to measure the relative dielectric permittivity {epsilon}^dr^ of H^d2^ at frequencies from 2.4 GHz to 7.3 GHz, at pressures up to 6.5 MPa, and at the temperatures 273 K and 293 K. The resonator was calibrat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901652

17. High Definition Flow
Topic: Chemical Engineering & Processing
Published: 8/1/2009
Authors: John D Wright, Michael R Moldover
Abstract: From pharmaceutical production to the natural gas market, exact flow measurements are critical. Here's how NIST helps keep us all on the same page.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832391

18. The Internal Fluid Mechanics of Explosive Trace Detectors using Computational Fluid Dynamics
Series: OTHER
Topic: Chemical Engineering & Processing
Published: 5/1/2009
Authors: Matthew E Staymates, Wayne Smith, John G Gillen
Abstract: Efforts are underway in the Surface and Microanalysis Science Division at the National Institute of Standards and Technology to study the vapor transport mechanisms inside explosive trace detection instruments (ETD s) and produce standard test materi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901483

19. Shear Thinning in Xenon
Topic: Chemical Engineering & Processing
Published: 1/1/2009
Authors: Robert F Berg, Michael R Moldover, G. Zimmerli, M Yao
Abstract: We measured shear thinning, a viscosity decrease ordinarily associated with complex liquids such as molten plastics or ketchup, near the critical point of xenon. The data span a wide range of dimensionless shear rate: 10^u{long dash}3^ < {gamma}{t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830995

20. The Electric And Magnetic Susceptibilities Of Gaseos Oxygen: Comparisons Of New Measurements and Modern Theory
Topic: Chemical Engineering & Processing
Published: 9/25/2008
Authors: Michael R Moldover, E May, James W Schmidt
Abstract: We used a cross capacitor to measure the relative dielectric permittivity {epsilon}^dr^ of O^d2^ at 273 K, 293 K, and 323 K and at pressures up to 6.5 MPa. Simultaneously we measured oxygen's complex refractive index {I}n{/I} using a quasi-spheri ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832266