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Transuranic actinide reactions with simple gas-phase molecules.

Description: The intent of this research is to conduct an experimental study of f-element chemistry fo r the purpose of identifying reaction trends and mechanisms of the early actinide metals with simple gas phase molecules . Previous research has elucidated some of the fundamenta l chemistry of the 4f elements,1-5 however, more complex chemistry is expected for the 5f serie s due to the inclusion of the 5f electrons in the valence shell . The matrix isolation approach, which is well-suited to the experimen… more
Date: January 1, 2003
Creator: Willson, S. P. (Stephen P.); Veirs, D. K. (Douglas Kirk) & Baiardo, J. P. (Joseph P.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Heat removal from high temperature tubular solid oxide fuel cells utilizing product gas from coal gasifiers.

Description: In this work we describe the results of a computer study used to investigate the practicality of several heat exchanger configurations that could be used to extract heat from tubular solid oxide fuel cells (SOFCs) . Two SOFC feed gas compositions were used in this study. They represent product gases from two different coal gasifier designs from the Zero Emission Coal study at Los Alamos National Laboratory . Both plant designs rely on the efficient use of the heat produced by the SOFCs . Both f… more
Date: January 1, 2003
Creator: Parkinson, W. J. (William Jerry),
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

C1 Chemistry for the Production of Ultra-Clean Liquid Transportation Fuels and Hydrogen

Description: Faculty and students from five universities--the University of Kentucky, University of Pittsburgh, University of Utah, West Virginia University, and Auburn University--are collaborating in a research program to develop C1 chemistry processes to produce ultra-clean liquid transportation fuels and hydrogen, the zero-emissions transportation fuel of the future. The feedstocks contain one carbon atom per molecular unit. They include synthesis gas (syngas), a mixture of carbon monoxide and hydrogen … more
Date: March 31, 2003
Creator: Huffman, Gerald P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Addition of Noncondensable Gases into RELAP5-3D for Analysis of High Temperature Gas-Cooled Reactors

Description: Oxygen, carbon dioxide, and carbon monoxide have been added to the RELAP5-3D computer code as noncondensable gases to support analysis of high temperature gas-cooled reactors. Models of these gases are required to simulate the effects of air ingress on graphite oxidation following a loss-of-coolant accident. Correlations were developed for specific internal energy, thermal conductivity, and viscosity for each gas at temperatures up to 3000 K. The existing model for internal energy (a quadratic … more
Date: August 1, 2003
Creator: Davis, C. B. & Oh, C. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

CALLA ENERGY BIOMASS COFIRING PROJECT

Description: The Calla Energy Biomass Project, to be located in Estill County, Kentucky is to be conducted in two phases. The objective of Phase I is to evaluate the technical and economic feasibility of cofiring biomass-based gasification fuel-gas in a power generation boiler. Waste coal fines are to be evaluated as the cofired fuel. The project is based on the use of commercially available technology for feeding and gas cleanup that would be suitable for deployment in municipal, large industrial and utili… more
Date: July 1, 2003
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of Novel Electrocatalysts for Proton Exchange Membrane Fuel Cells: Final Report

Description: Fuel cells are electrochemical devices that convert the available chemical free energy directly into electrical energy, without going through heat exchange process. Of all different types of fuel cells, the Proton Exchange Membrane Fuel Cell (PEMFC) is one of the most promising power sources for stand-alone utility and electric vehicle applications. Platinum (Pt) Catalyst is used for both fuel and air electrodes in PEMFCs. However, carbon monoxide (CO) contamination of H{sub 2} greatly affects … more
Date: April 24, 2003
Creator: Ilias, Shamsuddin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of Alternative Fuels and Chemicals From Synthesis Gas

Description: This Final Report for Cooperative Agreement No. DE-FC22-95PC93052, the ''Development of Alternative Fuels and Chemicals from Synthesis Gas,'' was prepared by Air Products and Chemicals, Inc. (Air Products), and covers activities from 29 December 1994 through 31 July 2002. The overall objectives of this program were to investigate potential technologies for the conversion of synthesis gas (syngas), a mixture primarily of hydrogen (H{sub 2}) and carbon monoxide (CO), to oxygenated and hydrocarbon… more
Date: May 31, 2003
Creator: Tijrn, Peter J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

C1 CHEMISTRY FOR THE PRODUCTION OF ULTRA-CLEAN LIQUID TRANSPORTATION FUELS AND HYDROGEN

Description: Faculty and students from five universities--the University of Kentucky, University of Pittsburgh, University of Utah, West Virginia University, and Auburn University--are collaborating in a research program to develop C1 chemistry processes to produce ultra-clean liquid transportation fuels and hydrogen, the zero-emissions transportation fuel of the future. The feedstocks contain one carbon atom per molecular unit. They include synthesis gas (syngas), a mixture of carbon monoxide and hydrogen … more
Date: March 31, 2003
Creator: Huffman, Gerald P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reducing Ultra-Clean Transportation Fuel Costs with HyMelt Hydrogen Quarterly Report

Description: This report describes activities for the third quarter of work performed under this agreement. Atmospheric testing was conducted as scheduled on June 5 through June 13, 2003. The test results were encouraging, however, the rate of carbon dissolution was below expectations. Additional atmospheric testing is scheduled for the first week of September 2003. Phase I of the work to be done under this agreement consists of conducting atmospheric gasification of coal using the HyMelt technology to prod… more
Date: July 31, 2003
Creator: Malone, Donald P. & Renner, William R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

CALLA ENERGY BIOMASS COFIRING PROJECT

Description: The Calla Energy Biomass Project, to be located in Estill County, Kentucky is to be conducted in two phases. The objective of Phase I is to evaluate the technical and economic feasibility of cofiring biomass-based gasification fuel-gas in a power generation boiler. Waste coal fines are to be evaluated as the cofired fuel. The project is based on the use of commercially available technology for feeding and gas cleanup that would be suitable for deployment in municipal, large industrial and utili… more
Date: March 31, 2003
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogen Absorption Property of Encapsulated Lani4.25A10.75

Description: For hydrogen economy to become a reality, hydrogen production will have to be greatly increased from what it is today. Hydrogen will have to be recovered from a variety of gas streams including low concentration streams with efficient methods. Efficient process for recovering hydrogen in low concentration streams is not available today. Powder of LaNi4.25Al0.75 was encapsulated in a porous silica matrix to produce a stable composite material. The material was packed in a column and tested for h… more
Date: July 21, 2003
Creator: Heung, L.K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Shape selective catalysts for F-T chemistry. Interim report : January 2001 - December 2002.

Description: Argonne National Laboratory (ANL) is carrying out a research program to create, prepare, and evaluate catalysts to promote Fischer-Tropsch (F-T) chemistry, specifically the reaction of hydrogen with carbon monoxide to form long-chain hydrocarbons. In addition to F-T catalysts needing high activity, it is desirable that they have high selectivity and stability with respect to both mechanical strength and aging properties. In this project, selectivity is directed toward the production of diesel f… more
Date: January 29, 2003
Creator: Cronauer, D. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

EARLY ENTRANCE COPRODUCTION PLANT

Description: The overall objective of this project is the three phase development of an Early Entrance Coproduction Plant (EECP) which produces at least one product from at least two of the following three categories: (1) electric power (or heat), (2) fuels, and (3) chemicals using petroleum coke and ChevronTexaco's proprietary gasification technology. The objective of Phase I was to determine the feasibility and define the concept for the EECP located at a specific site; develop a Research, Development, an… more
Date: April 25, 2003
Creator: Roberts, Randy
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

CALLA ENERGY BIOMASS COFIRING PROJECT

Description: The Calla Energy Biomass Project, to be located in Estill County, Kentucky is to be conducted in two phases. The objective of Phase I is to evaluate the technical and economic feasibility of cofiring biomass-based gasification fuel-gas in a power generation boiler. Natural gas and waste coal fines were evaluated as the cofired fuel. The project is based on the use of commercially available technology for feeding and gas cleanup that would be suitable for deployment in municipal, large industria… more
Date: September 1, 2003
Creator: Lau, Francis S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Identification and preliminary characterization of acsF, a Putative Ni-insertase used in the biosynthesis of acetyl-CoA synthase from Clostridium thermoaceticum

Description: OAK-B135 The acsABCDE genes in the Clostridium thermoaceticum genome are used for autotrophic acetyl-CoA synthesis using the Wood/Ljungdahl pathway. A 2.8 kb region between acsC and acsD was cloned and sequenced. Two open reading frames, orf7 ({approx} 1.9 kb) and acsF ({approx} 0.7 kb) were identified. orf7 appears to encode an Fe-S protein, in that it contains 5 conserved cysteine residues, 3 of which are present in a motif (CXXXXXCXXC) commonly used to coordinate Fe-S clusters. However, Orf7… more
Date: January 2003
Creator: Loke, Huay-Keng & Lindahl, Paul A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Optical Sensors for Post Combustion Control in Electric Arc Furnace Steelmaking (TRP 9851)

Description: Working in collaboration with Stantec Global Technologies, Process Metrix Corporation, and The Timken Company, Sandia National Laboratories constructed and evaluated a novel, laser-based off-gas sensor at the electric arc furnace facility of Timken's Faircrest Steel Plant (Canton, Ohio). The sensor is based on a mid-infrared tunable diode laser (TDL), and measures the concentration and temperature of specific gas species present in the off-gas emanating from the EAF. The laser beam is transmitt… more
Date: December 31, 2003
Creator: Allendorf, Sarah W.; Ottesen, David K.; Green, Robert W.; Hardesty, Donald R.; Kolarik, Robert; Goodfellow, Howard et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Influence of MSI (Metal-Support Interactions) and the Solvent in Liquid-Phase Reactions

Description: Results were repeatedly obtained that were consistent with a hypothesis proposed at the beginning of this program, i.e., due to Metal-Support Interactions (MSI), unique active sites can be created in the metal-support interfacial region to enhance activity and improve selectivity in certain types of reactions, especially those involving the hydrogenation of carbonyl and unsaturated C=C bonds. Higher turnover frequencies (TOF-molecule/s/site) and increased selectivity for C=O bond versus C=C bon… more
Date: May 30, 2003
Creator: Vannice, M. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DEMONSTRATION OF POTENTIAL FOR SELECTIVE CATALYTIC REDUCTION AND DIESEL PARTICULATE FILTERS

Description: This project addresses the potential for Selective Catalytic Reduction (SCR) devices (using urea as reductant) together with Diesel Particulate Filters (DPF) and low-pressure loop exhaust gas recirculation (EGR) to achieve future stringent emissions standards for heavy-duty engines powering Class 8 vehicles. Two emission control systems consisting of the three technologies (EGR, SCR, and DPF) were calibrated on a Caterpillar C-12 heavy-duty diesel engine. Results of these calibrations showed go… more
Date: August 24, 2003
Creator: McGILL,R; KHAIR, M & SHARP, C
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Emissions Inventory Report Summary: Reporting Requirements for the New Mexico Administrative Code, Title 20, Chapter 2, Part 73 (20 NMAC 2.73) for Calendar Year 2001

Description: Los Alamos National Laboratory is subject to annual emissions-reporting requirements for regulated air contaminants under Title 20 of the New Mexico Administrative Code, Chapter 2, Part 73 (20.2.73 NMAC), Notice of Intent and Emissions Inventory Requirements. The applicability of the requirements is based on the Laboratory's potential to emit 100 tons per year of suspended particulate matter, nitrogen oxides, carbon monoxide, sulfur oxides, or volatile organic compounds. For calendar year 2001,… more
Date: April 1, 2003
Creator: Stockton, Margorie
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Planetary Interior in the Laboratory

Description: In the three years of this project, we have provided a complete database of the electrical conductivity of planetary materials to 180 GPa. The electrical conductivities of these planetary materials now provide a basis for future modeling of planets taking into account full magnetohydrodynamics. By using a full magnetohydrodynamics simulation, the magnetic fields of the planets can then be taken into account. Moreover, the electrical conductivities of the planetary materials have given us insigh… more
Date: January 31, 2003
Creator: Chau, R; Bastea, M; Mitchell, A C; Minich, R W & Nellis, W J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Impact of Biodiesel Fuels on Air Quality and Human Health: Task 3 Report; The Impact of Biodiesel Fuels on Ambient Carbon Monoxide Levels in the Las Vegas Nonattainment Area

Description: This document is the Task 3 report for the NREL"Impacts of Biodiesel Fuels on Air Quality and Human Health" study. The objectives of Task 3 are to estimate the impacts of biodiesel fuels on elevated witner carbon monoxide concentrations for an urban area that is not currently in attainment of the CO standard.
Date: May 1, 2003
Creator: Mansell, G.; Morris, R. E. & Wilson, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Isotopic Tracing of Fuel Carbon in the Emissions of a Compression-Ignition Engine Fueled with Biodiesel Blends

Description: Experimental tests were conducted on a Cummins 85.9 direct-injected diesel engine fueled with biodiesel blends. 20% and 50% blend levels were tested, as was 100% (neat) biodiesel. Emissions of particulate matter (PM), nitrogen oxides (NO{sub x}), hydrocarbons (HC) and CO were measured under steady-state operating conditions. The effect of biodiesel on PM emissions was mixed; however, the contribution of the volatile organic fraction to total PM was greater for the higher biodiesel blend levels.… more
Date: March 3, 2003
Creator: Buchholz, B. A.; Cheng, A. S. & Dibble, R. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Evaluation of near-infrared tunable diode lasers for detection of transient emissions from a rotary kiln.

Description: Near-infrared tunable diode lasers (TDLs) were evaluated for their suitability as fast-response combustion performance indicators during tests at the U.S. Environmental Protection Agency's pilot-scale Rotary Kiln Incinerator Simulator (RKIS) facility. Transient emissions (i.e., 'puffs') of various magnitudes and duration were generated by injecting a mixture of toluene and methylene chloride into the rotary kiln, through use of a computer-controlled liquid gun or by ram-loading containers of th… more
Date: December 1, 2003
Creator: Shaddix, Christopher R.; Ottesen, David K.; Allendorf, Sarah W.; Miller, C. Andy (U.S. Environmental Protection Agency, Research Triangle Park, NC) & Lemieux, Paul M. (U.S. Environmental Protection Agency, Research Triangle Park, NC)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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