59 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Water Gas"  
Results: 1 - 24 next
open access

Advanced Water-Gas Shift Membrane Reactor

Description: The overall objectives for this project were: (1) to identify a suitable PdCu tri-metallic alloy membrane with high stability and commercially relevant hydrogen permeation in the presence of trace amounts of carbon monoxide and sulfur; and (2) to identify and synthesize a water gas shift catalyst with a high operating life that is sulfur and chlorine tolerant at low concentrations of these impurities. This work successfully achieved the first project objective to identify a suitable PdCu tri-me… more
Date: January 7, 2009
Creator: Emerson, Sean; Vanderspurt, Thomas; Opalka, Susanne; Radhakrishnan, Rakesh & Willigan, Rhonda
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Robust Low-Cost Water-Gas Shift Membrane Reactor for High-Purity Hydrogen Production form Coal-Derived Syngas

Description: This report details work performed in an effort to develop a low-cost, robust water gas shift membrane reactor to convert coal-derived syngas into high purity hydrogen. A sulfur- and halide-tolerant water gas shift catalyst and a sulfur-tolerant dense metallic hydrogen-permeable membrane were developed. The materials were integrated into a water gas shift membrane reactor in order to demonstrate the production of >99.97% pure hydrogen from a simulated coal-derived syngas stream containing 20… more
Date: May 31, 2008
Creator: Torkelson, James; Ye, Neng; Li, Zhijiang; Coutinho, Decio & Fokema, Mark
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Transient PrOx carbon monoxide measurement, control, and optimization

Description: Fuel processing systems for low temperature polymer electrolyte membrane (PEM) fuel cell systems require control of the carbon monoxide concentration to less than 100 ppm to 10 ppm in the anode feed. Conventional hydrocarbon fuel processors use a water-gas shift (WGS) reactor to react CO with water to form H2 and reduce the CO concentration. The CO conversion is limited by equilibrium at the outlet temperature of the WGS reactor. The WGS outlet CO concentration can range from over 1% to 2000 pp… more
Date: January 1, 2002
Creator: Inbody, M. A. (Michael A.); Borup, R. L. (Rodney L.) & Tafoya, J. (Jose I.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Oxidation/gasification of retorted oil shale. Final report, (Anvil Points shale)

Description: Reaction rate kinetics were determined for the oxidation and gasification of oil shale char produced by retorting oil shale from the Anvil Points area of Colorado. Variables investigated included the effect of retorting rate (.3 to 17/sup 0/C/min) on the char quantity and quality as well as a range of concentrations and temperatures pertinent to char gasification. As long as the shale was retorted at rates higher than 0.3/sup 0/C/min or with purge velocities higher than 4 cm/min (STP), there wa… more
Date: October 1, 1979
Creator: Thomson, W. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Theoretical Studies in Heterogenous Catalysis: Towards a Rational Design of Novel Catalysts for Hydrodesulfurization and Hydrogen Production

Description: Traditionally, knowledge in heterogeneous catalysis has come through empirical research. Nowadays, there is a clear interest to change this since millions of dollars in products are generated every year in the chemical and petrochemical industries through catalytic processes. To obtain a fundamental knowledge of the factors that determine the activity of heterogeneous catalysts is a challenge for modern science since many of these systems are very complex in nature. In principle, when a molecul… more
Date: October 1, 2008
Creator: Rodriguez,J.A. & Liu, P.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

ADVANCED CO2 CYCLE POWER GENERATION

Description: Research is being conducted under United States Department of Energy (DOE) Contract DE-FC26-02NT41621 to develop a conceptual design and determine the performance characteristics of a new IGCC plant configuration that facilitates CO{sub 2} removal for sequestration. This new configuration will be designed to achieve CO{sub 2} sequestration without the need for water gas shifting and CO{sub 2} separation, and may eliminate the need for a separate sequestration compressor. This research introduce… more
Date: October 1, 2003
Creator: Nehrozoglu, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ADVANCED CO2 CYCLE POWER GENERATION

Description: Research is being conducted under United States Department of Energy (DOE) Contract DE-FC26-02NT41621 to develop a conceptual design and determine the performance characteristics of a new IGCC plant configuration that facilitates CO{sub 2} removal for sequestration. This new configuration will be designed to achieve CO{sub 2} sequestration without the need for water gas shifting and CO{sub 2} separation, and may eliminate the need for a separate sequestration compressor. This research introduce… more
Date: January 1, 2004
Creator: Nehrozoglu, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

University/NETL Student Partnership Program

Description: The University/National Energy Technology Laboratory (NETL) Student Partnership Program stimulated basic and applied research in Energy and Environmental Science areas through NETL's Office of Science and Technology (OST). This Partnership Program supported the education of graduate students in Energy and Environmental Sciences, while fostering increased scientific interaction between NETL and the participating universities, by providing graduate student support for research at a NETL facility … more
Date: October 31, 2006
Creator: Holder, Gerald; Mathews, Jonathan; Wilson, Thomas; Chuang, Steven; Amon, Cristina; Ertekin, Turgay et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogen Production by Water Dissociation Using Ceramic Membranes. Annual Report for FY 2007

Description: The objective of this project is to develop dense ceramic membranes that, without using an external power supply or circuitry, can produce hydrogen via coal/coal gas-assisted water dissociation. This project grew out of an effort to develop a dense ceramic membrane for separating hydrogen from gas mixtures such as those generated during coal gasification, methane partial oxidation, and water-gas shift reactions [1]. That effort led to the development of various cermet (i.e., ceramic/metal compo… more
Date: March 4, 2008
Creator: Balachandran, U.; Chen, L.; Dorris, S. E.; Emerson, J. E.; Lee, T. H.; Park, C. Y. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of internal reforming carbonate fuel cell stack technology

Description: Activities under this contract focused on the development of a coal-fueled carbonate fuel cell system design and the stack technology consistent with the system design. The overall contract effort was divided into three phases. The first phase, completed in January 1988, provided carbonate fuel cell component scale-up from the 1ft{sup 2} size to the commercial 4ft{sup 2} size. The second phase of the program provided the coal-fueled carbonate fuel cell system (CGCFC) conceptual design and carri… more
Date: October 1, 1990
Creator: Farooque, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Investigation of dispersed iron alloy catalysts in the carbon monoxide-hydrogen synthesis reaction. Progress report, August 1, 1980-July 31, 1981

Description: The past year has seen completion of two major tasks in the research program: (1) a detailed study of the characterization of particle size in supported ..cap alpha..-Fe/sub 2/O/sub 3/ and related characterizations of the reduced metal with silica gel support; (2) a reaction study of a series of silica supported Fe-Ni, Fe-Co, Fe-Cu, Fe-K and the corresponding pure metals. Synthesis activity and selectivity were particular objectives of this work, and a particular correlation of the conversion d… more
Date: April 1, 1981
Creator: Butt, J.B. & Schwartz, L.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sensitivity of Fischer-Tropsch Synthesis and Water-Gas Shift Catalystes to Poisons form High-Temperature High-Pressure Entrained-Flow (EF) Oxygen-Blown Gasifier Gasification of Coal/Biomass Mixtures

Description: There has been a recent shift in interest in converting not only natural gas and coal derived syngas to Fischer-Tropsch synthesis products, but also converting biomass-derived syngas, as well as syngas derived from coal and biomass mixtures. As such, conventional catalysts based on iron and cobalt may not be suitable without proper development. This is because, while ash, sulfur compounds, traces of metals, halide compounds, and nitrogen-containing chemicals will likely be lower in concentratio… more
Date: September 30, 2009
Creator: Davis, Burton; Jacobs, Gary; Ma, Wenping; Azzam, Khalid; ChakkamadathilMohandas, Janet & Shafer, Wilson
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sensitivity of Fischer-Tropsch Synthesis and Water-Gas Shift Catalysts to Poisons from High-Temperature High-Pressure Entrained-Flow (EF) Oxygen-Blown Gasifier Gasification of Coal/Biomass Mixtures

Description: The successful adaptation of conventional cobalt and iron-based Fischer-Tropsch synthesis catalysts for use in converting biomass-derived syngas hinges in part on understanding their susceptibility to byproducts produced during the biomass gasification process. With the possibility that oil production will peak in the near future, and due to concerns in maintaining energy security, the conversion of biomass-derived syngas and syngas derived from coal/biomass blends to Fischer-Tropsch synthesis … more
Date: September 30, 2010
Creator: Davis, Burtron; Jacobs, Gary; Ma, Wenping; Azzam, Khalid; Sparks, Dennis & Shafer, Wilson
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High Purity Hydrogen Production with In-Situ Carbon Dioxide and Sulfur Capture in a Single Stage Reactor

Description: Enhancement in the production of high purity hydrogen (H{sub 2}) from fuel gas, obtained from coal gasification, is limited by thermodynamics of the water gas shift (WGS) reaction. However, this constraint can be overcome by conducting the WGS in the presence of a CO{sub 2}-acceptor. The continuous removal of CO{sub 2} from the reaction mixture helps to drive the equilibrium-limited WGS reaction forward. Since calcium oxide (CaO) exhibits high CO{sub 2} capture capacity as compared to other sor… more
Date: July 31, 2011
Creator: Phalak, Nihar; Ramkumar, Shwetha; Connell, Daniel; Sun, Zhenchao; Yu, Fu-Chen; Deshpande, Niranjani et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Power Systems Development Facility Gasification Test Campaign TC24

Description: In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF), located in Wilsonville, Alabama, routinely demonstrates gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a KBR Transport Gasifier, a hot gas particulate control device, advanced syngas cleanup systems, and high… more
Date: March 30, 2008
Creator: Southern Company Services
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogen Separation Membranes Annual Report for FY 2008.

Description: The objective of this work is to develop dense ceramic membranes for separating hydrogen from other gaseous components in a nongalvanic mode, i.e., without using an external power supply or electrical circuitry. The goal of this project is to develop dense hydrogen transport membranes (HTMs) that nongalvanically (i.e., without electrodes or external power supply) separate hydrogen from gas mixtures at commercially significant fluxes under industrially relevant operating conditions. HTMs will be… more
Date: March 17, 2009
Creator: Balachandran, U.; Dorris, S. E.; Emerson, J. E.; Lee, T. H.; Lu, Y.; Park, C. Y. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Single Membrane Reactor Configuration for Separation of Hydrogen, Carbon Dioxide and Hydrogen Sulfide

Description: The objective of the project was to develop a novel complementary membrane reactor process that can consolidate two or more downstream unit operations of a coal gasification system into a single module for production of a pure stream of hydrogen and a pure stream of carbon dioxide. The overall goals were to achieve higher hydrogen production efficiencies, lower capital costs and a smaller overall footprint than what could be achieved by utilizing separate components for each required unit proce… more
Date: May 31, 2008
Creator: Roberts, Micheal; Zabransky, Robert; Doong, Shain & Lin, Jerry
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogen Production by Water Dissociation Using Ceramic Membranes - Annual Report for Fy 2008.

Description: The objective of this project is to develop dense ceramic membranes that, without using an external power supply or circuitry, can produce hydrogen via coal/coal gas-assisted water dissociation. This project grew from an effort to develop a dense ceramic membrane for separating hydrogen from gas mixtures such as those generated during coal gasification, methane partial oxidation, and water-gas shift reactions. That effort led to the development of various cermet (i.e., ceramic/metal composite) … more
Date: March 25, 2009
Creator: Balachandran, U.; Dorris, S. E.; Emerson, J. E.; Lee, T. H.; Lu, Y.; Park, C. Y. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Highly Selective H2 Separation Zeolite Membranes for Coal Gasification Membrane Reactor Applications

Description: Zeolite membranes are thermally, chemically, and mechanically stable. They also have tunable molecular sieving and catalytic ability. These unique properties make zeolite membrane an excellent candidate for use in catalytic membrane reactor applications related to coal conversion and gasification, which need high temperature and high pressure range separation in chemically challenging environment where existing technologies are inefficient or unable to operate. Small pore, good quality, and thi… more
Date: September 24, 2007
Creator: Hong, Mei; Noble, Richard & Falconer, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogen Production by Water Dissociation Using Ceramic Membranes - Annual Report for FY 2010.

Description: The objective of this project is to develop dense ceramic membranes that can produce hydrogen via coal/coal gas-assisted water dissociation without using an external power supply or circuitry. This project grew from an effort to develop a dense ceramic membrane for separating hydrogen from gas mixtures such as those generated during coal gasification, methane partial oxidation, and water-gas shift reactions. That effort led to the development of various cermet (i.e., ceramic/metal composite) me… more
Date: March 14, 2011
Creator: Balachandran, U.; Dorris, S. E.; Emerson, J. E.; Lee, T. H.; Lu, Y.; Park, C. Y. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Highly Selective H2 Separation Zeolite Membranes for Coal Gasification Membrane Reactor Applications

Description: Zeolite membranes are thermally, chemically, and mechanically stable. They also have tunable molecular sieving and catalytic ability. These unique properties make zeolite membrane an excellent candidate for use in catalytic membrane reactor applications related to coal conversion and gasification, which need high temperature and high pressure range separation in chemically challenging environment where existing technologies are inefficient or unable to operate. Small pore, good quality, and thi… more
Date: September 24, 2006
Creator: Hong, Mei; Noble, Richard D. & Falconer, John L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Attrition Resistant Iron-Based Catalysts For F-T SBCRs

Description: The Fischer-Tropsch (F-T) reaction provides a way of converting coal-derived synthesis gas (CO+ H{sub 2}) to liquid fuels. Since the reaction is highly exothermic, one of the major problems in control of the reaction is heat removal. Recent work has shown that the use of slurry bubble column reactors (SBCRs) can largely solve this problem. The use of iron-(FE) based catalysts is attractive not only due to their low cost and ready availability, but also due to their high water-gas shift activity… more
Date: January 31, 2006
Creator: Adeyiga, Adeyinka A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogen Separation Membranes Annual Report for FY 2006.

Description: The objective of this work is to develop dense ceramic membranes for separating hydrogen from other gaseous components in a nongalvanic mode, i.e., without using an external power supply or electrical circuitry. This goal of this project is to develop two types of dense ceramic membrane for producing hydrogen nongalvanically, i.e., without electrodes or external power supply, at commercially significant fluxes under industrially relevant operating conditions. The first type of membrane, hydroge… more
Date: February 5, 2007
Creator: Balachandran, U.; Chen, L.; Ciocco, M.; Doctor, R. D.; Dorris, S. E.; Emerson, J. E. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

CATALYSIS SCIENCE INITIATIVE: From First Principles Design to Realization of Bimetallic Catalysts for Enhanced Selectivity

Description: In this project, we have integrated state-of-the-art Density Functional Theory (DFT) models of heterogeneous catalytic processes with high-throughput screening of bimetallic catalytic candidates for important industrial problems. We have studied a new class of alloys characterized by a surface composition different from the bulk composition, and investigated their stability and activity for the water-gas shift reaction and the oxygen reduction reaction. The former reaction is an essential part … more
Date: May 3, 2007
Creator: Mavrikakis, Manos & Dumesic, James A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen