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Topic Area: Chemical Engineering
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Displaying records 1 to 10 of 109 records.
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1. In Search of Better Pressure Standards
Topic: Chemical Engineering & Processing
Published: 8/1/2014
Authors: Jay H Hendricks, Jacob E Ricker, Patrick F Egan, Gregory F Strouse
Abstract: Based on highly accurate optical interferometry and fundamental quantum calculations, researchers at the National Institute of Standards and Technology (NIST) in the US are developing an improved definition of the SI unit for pressure that will consi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916352

2. Metrology for comparison of displacements at the picometer level
Topic: Chemical Engineering & Processing
Published: 7/31/2014
Authors: Jack A Stone Jr, Patrick F Egan, Jay H Hendricks, Gregory F Strouse, Douglas A Olson, Jacob E Ricker, Gregory E Scace, Donavon Gerty
Abstract: An apparatus capable of comparing displacements with picometer accuracy is currently being designed at NIST. In principle, we wish to compare one displacement in vacuum to a second, equal displacement in gas, in order to determine gas refractive inde ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914470

3. A Demonstration of Fast and Accurate Discrimination and Quantification of Chemically Similar Species Utilizing a Single Cross-Selective Chemiresistor
Topic: Chemical Engineering & Processing
Published: 6/14/2014
Authors: Alexander (Alexander) Vergara Tinoco, Kurt D Benkstein, Christopher B Montgomery, Stephen Semancik
Abstract: Performance characteristics of gas-phase microsensors will determine the ultimate utility of these devices for a wide range of chemical monitoring applications. Considerable effort has led to electronic nose devices that utilize multiple cross-select ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915670

4. Recent advances in vacuum sciences and applications
Topic: Chemical Engineering & Processing
Published: 4/9/2014
Authors: Miran Mozetic, Kostya Ostrikov, David Ruzic, Davide Curreli, Uros Cvelbar, Alenka Vesel, Gregor Primc, Manfred Leisch, Karl Jousten, Oleg Malyshev, Jay H Hendricks, laszlo Kover, Alberto Tagliaferro, O Conde, Antonio Silvestre, J Giapintzakis, M Buljan, N Radi?, G Dra?i?, S Bernstorff, H Biederman, O Kyli?n, J Hanu?, S Milo?evi?, A Galtayries, P Dietrich, W Unger, K Stana-Kleinschek, A Drmota?Petri?, J J Pireaux, J W Rogers, M Anderle, M Lehocky, V Sedlarik
Abstract: Recent advances in vacuum sciences and applications are reviewed. Novel optical interferometer cavity devices enable pressure measurements with ppm accuracy. Innovative dynamic vacuum standard allows for pressure measurements with temporal resolution ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914906

5. A comparison of literature models for the oxidation of normal heptane
Topic: Chemical Engineering & Processing
Published: 2/1/2014
Authors: David A Sheen, Wing Tsang
Abstract: The development of detailed chemical kinetic models has proceeded unabated since the pioneering work of Dixon-Lewis and coworkers forty-five years ago. In that time, computational power has increased ten million-fold, and yet, we do not have a conse ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912741

6. Perfluorohexane Adsorption in BCR-704 Faujasite Zeolite Benchmark Studies for the Seventh Industrial Fluid Properties Simulation Challenge
Topic: Chemical Engineering & Processing
Published: 1/6/2014
Authors: Richard Ross, John K. Brennan, Kevin A Frankel, Jonathan D Moore, Raymond Dale Mountain, Joshua D Moore, Riaz Ahmad, Matthias Thommes, Vincent K Shen, Nathan E Schultz, Daniel W Siderius, Kenneth D Smith
Abstract: 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914428

7. Connection between thermodynamics and dynamics of simple fluids in highly attractive pores
Topic: Chemical Engineering & Processing
Published: 10/25/2013
Authors: William P Krekelberg, Vincent K Shen, Daniel W Siderius, Thomas M. Truskett, Jeffrey R. Errington
Abstract: We investigate the structural and diffusive dynamics properties of a model fluid in highly-absorptive cylindrical pores. At subcritical temperatures, self diffusion displays three distinct regimes as a function of average pore density ρ: 1) a de ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914566

8. The Seventh Industrial Fluid Properties Simulation Challenge
Topic: Chemical Engineering & Processing
Published: 10/8/2013
Authors: Riaz Ahmad, John K. Brennan, Kevin A Frankel, Jonathan D Moore, Joshua D Moore, Raymond Dale Mountain, Richard Ross, Vincent K Shen, Nathan E Schultz, Daniel W Siderius, Kenneth D Smith, Matthias Thommes
Abstract: The primary goal of the seventy industrial fluid properties simulation challenge was to test the ability of molecular simulation methods to predict the adsorption of organic adsorbates in zeolite materials. Zeoliet adsorbents are used in a variety o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913980

9. Use of the Grand Canonical Transition-Matrix Monte Carlo Method to Model Gas Adsorption in Porous Materials
Topic: Chemical Engineering & Processing
Published: 2/21/2013
Authors: Daniel W Siderius, Vincent K Shen
Abstract: We present grand canonical transition-matrix Monte Carlo (GC-TMMC) as an efficient method for simulating gas adsorption processes, with particular emphasis on subcritical gas adsorption in which capillary phase transitions are present. As in other a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912491

10. A Humidity Generator for Temperatures to 200 °C and Pressures to 1.6 MPa
Topic: Chemical Engineering & Processing
Published: 11/30/2012
Authors: D Vega-Maza, W Wyatt Miller, Dean C Ripple, Gregory E Scace
Abstract: We have constructed a new humidity generator that produces gas streams of known moisture content at temperatures from 85 °C to 200 °C, absolute pressures from 0.2 MPa to 1.6 MPa, and relative humidities from 10 % to 90 %. The generator produces a moi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905234



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