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Advanced Hydrogen Transport Membranes for Vision 21 Fossil Fuel Plants
Eltron Research Inc., and team members CoorsTek, McDermott Technology, Inc., Sued Chemie, Argonne National Laboratory, and Oak Ridge National Laboratory are developing an environmentally benign, inexpensive, and efficient method for separating hydrogen from gas mixtures produced during industrial processes, such as coal gasification. This objective is being pursued using dense membranes based in part on Eltron-patented ceramic materials with a demonstrated ability for proton and electron conduction. The technical goals are being addressed by modifying single-phase and composite membrane composition and microstructure to maximize proton and electron conductivity without loss of material stability. Ultimately, these materials must enable hydrogen separation at practical rates under ambient and high-pressure conditions, without deactivation in the presence of feedstream components such as carbon dioxide, water, and sulfur. This project was motivated by the National Energy Technology Laboratory (NETL) Vision 21 initiative which seeks to economically eliminate environmental concerns associated with the use of fossil fuels. The proposed technology addresses the DOE Vision 21 initiative in two ways. First, this process offers a relatively inexpensive solution for pure hydrogen separation that can be easily incorporated into Vision 21 fossil fuel plants. Second, this process could reduce the cost of hydrogen, which is a clean burning …
Date:
January 30, 2001
Creator:
Roark, Shane E.; Sammells, Tony F.; Calihman, Adam; Girard, Andy; Calcar, Pamela M. Van; Mackay, Richard et al.
Object Type:
Report
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 101, No. 275, Ed. 1 Tuesday, January 30, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 30, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Amending Process in the House of Representatives
This report consists of the amending process in the house of representatives.
Date:
January 30, 2001
Creator:
Bach, Stanley
Object Type:
Report
System:
The UNT Digital Library
The Amending Process in the House of Representatives
The amending process on the floor of the House of Representatives gives Members an opportunity to change the provisions of the bills and resolutions on which they are going to vote. This report summarizes many of the procedures and practices affecting this process, which can be among the most complex as well as the most important stages of legislative consideration.
Date:
January 30, 2001
Creator:
Bach, Stanley
Object Type:
Report
System:
The UNT Digital Library
Assessment of Recuperator Materials for Microturbines
Microturbines in production (or nearly in production) use metal recuperators with gas inlet temperatures of less than 700 C to raise their efficiency to about 30%. To increase their efficiencies to greater than 40% (which is the DOE Advanced Microturbine Program goal) will require operating at higher gas inlet temperatures, if the compression ratio remains less than 6. Even at higher compression ratios, the inlet temperature will increase as the efficiency increases, necessitating the use of new materials of construction. The materials requirement for recuperators used in microturbines may be categorized by their maximum operating temperatures: 700, 800, and {approximately}900 C. These limits are based on the materials properties that determine recuperator failure, such as corrosion, oxidation, creep, and strength. Metallic alloys are applicable in the 700 and 800 C limits; ceramics are applicable in the 900 C range. Most of the heat exchangers in the current microturbines are primary surface recuperators (PSR), compact recuperators fabricated in 347 stainless steel by rolling foil that is a few (>5) mil thick into air cells; the metal recuperators are operated at temperatures below 650 C. Preliminary research indicates that the use of 347 stainless steel can be extended to 700 C. However, …
Date:
January 30, 2001
Creator:
Omatete, O.O.
Object Type:
Report
System:
The UNT Digital Library
Atom Probe Tomography Characterization of the Solute Distributions in a Neutron-Irradiated and Annealed Pressure Vessel Steel Weld
A combined atom probe tomography and atom probe field ion microscopy study has been performed on a submerged arc weld irradiated to high fluence in the Heavy-Section Steel irradiation (HSSI) fifth irradiation series (Weld 73W). The composition of this weld is Fe - 0.27 at. % Cu, 1.58% Mn, 0.57% Ni, 0.34% MO, 0.27% Cr, 0.58% Si, 0.003% V, 0.45% C, 0.009% P, and 0.009% S. The material was examined after five conditions: after a typical stress relief treatment of 40 h at 607 C, after neutron irradiation to a fluence of 2 x 10{sup 23} n m{sup {minus}2} (E > 1 MeV), and after irradiation and isothermal anneals of 0.5, 1, and 168 h at 454 C. This report describes the matrix composition and the size, composition, and number density of the ultrafine copper-enriched precipitates that formed under neutron irradiation and the change in these parameters with post-irradiation annealing treatments.
Date:
January 30, 2001
Creator:
Miller, M. K.
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 79, No. 65, Ed. 1 Tuesday, January 30, 2001
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
January 30, 2001
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 95, No. 113, Ed. 1 Tuesday, January 30, 2001
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
January 30, 2001
Creator:
Keasling, Edna
Object Type:
Newspaper
System:
The Portal to Texas History
Brady Standard-Herald and Heart O' Texas News (Brady, Tex.), Ed. 1 Tuesday, January 30, 2001
Semiweekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.
Date:
January 30, 2001
Creator:
Stewart, James E.
Object Type:
Newspaper
System:
The Portal to Texas History
Campaign Financing
This is one report in the series of reports that discuss the campaign finance practices and related issues. Concerns over financing federal elections have become a seemingly perennial aspect of our political system, centered on the enduring issues of high campaign costs and reliance on interest groups for needed campaign funds. The report talks about the today’s paramount issues such as perceived loopholes in current law and the longstanding issues: overall costs, funding sources, and competition.
Date:
January 30, 2001
Creator:
Cantor, Joseph E.
Object Type:
Report
System:
The UNT Digital Library
Carbon Sequestration on Surface Mine Lands Quarterly Report
The October-December 2003 Quarter was dedicated to analyzing the first years tree planting activities and evaluation of the results. This included the analyses of the species success at each of the sites and quantifying the baseline data for future year determination of research levels of mixes. The small mammal colonization study of revegetated surface mines was also initiated and sampling systems initiated.
Date:
January 30, 2001
Creator:
Graves, Donald H.; Barton, Christopher; Sweigard, Richard & Warner, Richard
Object Type:
Report
System:
The UNT Digital Library
Daily Journal (Perry, Okla.), Vol. 108, No. 21, Ed. 1 Tuesday, January 30, 2001
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 30, 2001
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Development of a nanoindenter for in-situ transmission electron microscopy
In-situ transmission electron microscopy is an established experimental technique that permits direct observation of the dynamics and mechanisms of dislocation motion and deformation behavior. In this paper, we detail the development of a novel specimen goniometer that allows real time observations of the mechanical response of materials to indentation loads. The technology of the scanning tunneling microscope is adopted to allow nanometer scale positioning of a sharp, conductive diamond tip onto the edge of an electron transparent sample. This allows application of loads to nanometer-scale material volumes couple with simultaneous imaging of the material response. The emphasis in this paper is experimental and descriptive, with particular attention given to sample geometry and other technical requirements. Examples of the deformation of aluminum and titanium carbide as well as the fracture of silicon will be presented.
Date:
January 30, 2001
Creator:
Stach, Eric A.; Freeman, Tony; Minor, Andrew M.; Owen, Doug K.; Cumings, John; Wall, Mark A. et al.
Object Type:
Article
System:
The UNT Digital Library
Diamond-Related African Conflicts: A Fact Sheet
This report summarizes major demographic and spending trends that characterize the on-going conflicts in the Democratic Republic of the Congo (DRC), Sierra Leone, and Angola.
Date:
January 30, 2001
Creator:
Cook, Nicholas & Merrow, Jessica
Object Type:
Report
System:
The UNT Digital Library
Electroweak and B physics results from the Fermilab Tevatron Collider
This writeup is an introduction to some of the experimental issues involved in performing electroweak and b physics measurements at the Fermilab Tevatron. In the electroweak sector, we discuss W and Z boson cross section measurements as well as the measurement of the mass of the W boson. For b physics, we discuss measurements of B{sup 0}/{bar B}{sup 0} mixing and CP violation. This paper is geared towards nonexperts who are interested in understanding some of the issues and motivations for these measurements and how the measurements are carried out.
Date:
January 30, 2001
Creator:
Pitts, K.T.
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Tuesday, January 30, 2001
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 30, 2001
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Fatigue Properties of Type 316 LN Stainless Steels as a Function of Frequency and Waveform
The low cycle fatigue behavior of type 316LN stainless steel was investigated in air and mercury at frequencies from 0.1 to 10 Hz. Cyclic stress ratios (R) of {minus}1 and 0.1 were used with sinusoidal, triangular and positive sawtooth wave forms. Mercury appears to reduce fatigue life at high stress amplitudes, but the endurance limit may be unaffected. Low frequency and mean stress decreased the fatigue endurance limit, but type of waveform did not appear to affect fatigue life under the conditions of these tests.
Date:
January 30, 2001
Creator:
DiStefano, J.R.
Object Type:
Report
System:
The UNT Digital Library
Final report: Contract No. DE-AC02-85ER40193, and continuation Grant No. DE-FG02-92ER40730 [Fermilab; high energy physics]
A brief summary of the experimental objectives and a listing of publications which have resulted from the Iowa State University High Energy Physics Alpha Group / Program for the period of 1985 - 2000 are given.
Date:
January 30, 2001
Creator:
Anderson, E. Walter
Object Type:
Report
System:
The UNT Digital Library
Final report: VHE [very high energy] gamma-ray astronomy at Iowa State University, 1991-2000
A brief summary of the important results and a listing of publications which have resulted from the Iowa State University Very High Energy Gamma-ray Astrophysics Program for the decade 1991-2000 are given.
Date:
January 30, 2001
Creator:
Carter-Lewis, D.
Object Type:
Report
System:
The UNT Digital Library
The First Year: Assessments of Cooperation Between Newly Elected Presidents and Congress
None
Date:
January 30, 2001
Creator:
Relyea, Harold C.; Kaiser, Frederick M. & Stathis, Stephen W.
Object Type:
Report
System:
The UNT Digital Library
A Fluid-kinetic Hybrid Electron Model for Electromagnetic Simulations
A fluid-kinetic hybrid electron model for electromagnetic simulations of finite-beta plasmas is developed based on an expansion of the electron response using the electron-ion mass ratio as a small parameter (Here beta is the ratio of plasma pressure to magnetic pressure.) The model accurately recovers low-frequency plasma dielectric responses and faithfully preserves nonlinear kinetic effects (e.g., phase space trapping). Maximum numerical efficiency is achieved by overcoming the electron Courant condition and suppressing high-frequency modes. This method is most useful for nonlinear kinetic (particle-in-cell or Vlasov) simulations of electromagnetic microturbulence and Alfvenic instabilities in magnetized plasmas.
Date:
January 30, 2001
Creator:
Lin, Zhihong & Chen, Liu
Object Type:
Report
System:
The UNT Digital Library
Gay and Danielle Connor
Photograph of Gay and Danielle Connor.
Date:
January 30, 2001
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Gay and Danielle Connor
Photograph of Gay and Danielle Connor.
Date:
January 30, 2001
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Gay and Danielle Connor
Photograph of Gay and Danielle Connor.
Date:
January 30, 2001
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History