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Engineering Plant Cell Walls: Tuning Lignin Monomer Composition for Deconstructable Biofuels Feedstocks or Resilient Biomaterials

February 27, 2014

Author(s)

Peter Ciesielski, Michael Resch, Barron Hewetson, Jason Killgore, Alexandra Curtin, Nick Anderson, Ann Chiaramonti Debay, Donna C. Hurley, Aric Sanders, Michael Himmel, Clint Chapple, Nathan Mosier, Bryon Donohoe

Advances in genetic manipulation of the biopolymers that compose plant cell walls will facilitate more efficient production of biofuels and chemicals from biomass and lead to specialized biomaterials with tailored properties. Here we investigate several

Compressed-liquid Density Measurements of Three Alternative Turbine Fuels

February 7, 2014

Author(s)

Stephanie L. Outcalt

Compressed-liquid densities of three alternative turbine fuels have been measured. The measurements were made from 270 K to 470 K, and 0.5 MPa to 50 MPa. The data have been correlated with a Tait equation, and parameters are given for each fuel. Results of

Measuring the sulfur content and corrosivity of North American petroleum with the advanced distillation curve method

February 5, 2014

Author(s)

Peter Y. Hsieh, Thomas J. Bruno

Petroleum is a complex fluid whose sulfur content varies considerably depending on its place of origin. Sour crude petroleum, which contains more than 0.5 % sulfur by mass, often requires additional processing due to the potential for corrosion and

Composition-Explicit Distillation Curves of Alternative Turbine Fuels

December 3, 2013

Author(s)

Raina V. Gough, Thomas J. Bruno

In recent years, environmental considerations, the potential for supply disruptions, and rising fuel prices have led to the development of turbine fuels produced from non-petroleum feedstocks. To determine the suitability of an alternative turbine fuel, it

Determination of Trace Sulfur in Biodiesel and Diesel Standard Reference Materials by Isotope Dilution Sector Field Inductively Coupled Plasma Mass Spectrometry

November 14, 2013

Author(s)

Steven J. Christopher, Stephen E. Long, Renata Amais, Joaquim N?ga

A method is described for quantification of sulfur at low concentrations on the order of 10 µg g-1 in biodiesel and diesel fuels using double isotope dilution and sector field inductively coupled plasma mass spectrometry (ID-SF-ICP-MS). Closed vessel

FATIGUE CRACK GROWTH OF TWO PIPELINE STEELS IN A PRESSURIZED HYDROGEN ENVIRONMENT

October 22, 2013

Author(s)

Andrew J. Slifka, Elizabeth S. Drexler, Nicholas Nanninga, Yaakov Levy, Joseph D. McColskey, Robert L. Amaro

Fatigue crack growth tests were conducted on two pipeline steel alloys, API 5L X52 and X100. Baseline tests were conducted in air, and those results were compared with tests conducted in pressurized hydrogen gas. All tests were run at (load ratio) R = 0.5

Fatigue Crack Growth Modeling of Pipeline Steels in High Pressure Gaseous Hydrogen

October 21, 2013

Author(s)

Robert L. Amaro, Elizabeth S. Drexler, Andrew J. Slifka

Hydrogen will likely play a key role in a future clean energy economy. However, fundamental understanding of the deleterious effects of hydrogen on the fatigue and fracture properties of pipeline steels is lacking. Furthermore, engineering tools for design

Reference Correlation of the Viscosity of n-Hexane from the Triple Point to 600 K and up to 100 MPa

September 10, 2013

Author(s)

E.K. Michailidou, Marc J. Assael, Marcia L. Huber, Richard A. Perkins

This paper contains new, representative reference equations for the viscosity of n-hexane. The equations are based in part upon a body of experimental data that has been critically assessed for internal consistency and for agreement with theory whenever

Wide Ranging Viscosity Measurements of Rocket Propellant RP-2

August 28, 2013

Author(s)

Arno D. Laesecke, Dylan S. Cousins

Expanding on earlier viscosity measurements of rocket propellants from 293 K to 373 K at atmospheric pressure, the viscosity of rocket propellant RP-2 was measured from 270 K to 450 K with pressures to 137 MPa. The instrument was an oscillating piston

Thermal Stability of RP-2 as a Function of Composition: The Effect of Linear, Branched, and Cyclic Alkanes

August 22, 2013

Author(s)

Thomas J. Bruno, Jason A. Widegren

The objective of this work was to identify compositional changes that could improve the thermal stability of the kerosene rocket propellant known as RP-2. For this study, we tested the effect of different types of alkanes on the thermal stability of RP-2

Mass diffusion of organic fluids: a molecular dynamics perspective

May 31, 2013

Author(s)

Alexander Y. Smolyanitsky, Andrei F. Kazakov, Thomas J. Bruno, Marcia L. Huber

A well-established interaction potential, the Optimized Potential for Liquid Simulation All-Atom (OPLS-AA) force-field, within the MD framework was used to determine self- and mutual diffusivity of several near-critical and supercritical fluids. The test

Thermal Decomposition Kinetics of 1,3,5-Triisopropylcyclohexane

May 29, 2013

Author(s)

Raina V. Gough, Jason A. Widegren, Thomas J. Bruno

Recent surrogate diesel fuel mixture development identified the need for a multiply-substituted, low cetane number, high molecular mass monocycloalkane component. On the basis of a thermophysical property evaluation and prediction, 1,3,5

NIST Standard Reference Database 23: Reference Fluid Thermodynamic and Transport Properties-REFPROP, Version 9.1

May 7, 2013

Author(s)

Eric W. Lemmon, Marcia L. Huber, Mark O. McLinden

This is a new release of the NIST Standard Reference Database 23, commonly known as REFPROP. Enhancements have been made to most areas of the NIST REFPROP program, including the graphical interface, the Excel spreadsheet, the FORTRAN files (i.e., core