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Oxidation/gasification of carbon residue on retorted oil shale. Final report

Description: Studies of the oxidation and gasification of oil shale char were extended to an investigation of the effects of mineral catalysis. Six shales with differing mineral compositions were studied, including samples from the saline zone in the Western Colorado and from the Antrim shales of Michigan. Oxidation kinetics data, corrected for mass transfer effects, were compared for all six samples. A high assay shale from Utah and a sample from the saline zone were found to have the highest oxidation rat… more
Date: January 16, 1984
Creator: Thomson, W. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Determination of optimum electrolyte composition for molten carbonate fuel cells

Description: The goal of this program is the development of a molten carbonate fuel cell (MCFC) anode which is more tolerant of sulfur contaminants in the fuel than the current state-of-the-art nickel-based anode structures. This program addresses two different but related aspects of the sulfur contamination problem. The primary aspect is concerned with the development of a sulfur tolerant electrocatalyst for the fuel oxidation reaction. A secondary issue is the development of a sulfur tolerant water-gas-sh… more
Date: January 1, 1987
Creator: Yuh, C. Y. & Pigeaud, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Sulfur tolerant anode materials

Description: The goal of this program is the development of a molten carbonate fuel cell (MCFC) anode which is more tolerant of sulfur contaminants in the fuel than the current state-of-the-art nickel-based anode structures. This program addresses two different but related aspects of the sulfur contamination problem. The primary aspect is concerned with the development of a sulfur tolerant electrocatalyst for the fuel oxidation reaction. A secondary issue is the development of a sulfur tolerant water-gas-sh… more
Date: February 1, 1988
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Sulfur tolerant anode materials

Description: The goal of this program is the development of a molten carbonate fuel cell (MCFC) anode which is more tolerant of sulfur contaminants in the fuel than the current state-of-the-art nickel-based anode structures. This program addresses two different but related aspects of the sulfur contamination problem. The primary aspect is concerned with the development of a sulfur tolerant electrocatalyst for the fuel oxidation reaction. A secondary issue is the development of a sulfur tolerant water-gas-sh… more
Date: May 1, 1988
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sulfur tolerant anode materials

Description: The goal of this program is the development of a molten carbonate fuel cell (MCFC) anode which is more tolerant of sulfur contaminants in the fuel than the current state-of-the-art nickel-based anode structures. This program addresses two different but related aspects of the sulfur contamination problem. The primary aspect is concerned with the development of a sulfur tolerant electrocatalyst for the fuel oxidation reaction. A secondary issue is the development of a sulfur tolerant water-gas-sh… more
Date: February 1, 1987
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Computational Chemistry-Based Identification of Ultra-Low Temperature Water-Gas-Shift Catalysts

Description: The current work seeks to identify novel, catalytically-active, stable, poison-resistant LWGS catalysts that retain the superior activity typical of conventional Cu catalysts but can be operated at similar or lower temperatures. A database for the Binding Energies (BEs) of the LWGS relevant species, namely CO, O and OH on the most-stable, close-packed facets of a set of 17 catalytically relevant transition metals was established. This BE data and a database of previously established segregation… more
Date: August 31, 2008
Creator: Mavrikakis, Manos
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Studies relevant to the catalytic activation of carbon monoxide

Description: Research activity has included continued mechanistic investigations of the nucleophilic activation of carbon monoxide such as homogeneous catalysis of the water gas shift and key steps in the relevant catalytic cycles. Other investigations of related processes included the application of fast reaction techniques to prepare and to investigate quantitatively reactive organometallic intermediates relevant to the activation of hydrocarbons toward carbonylation and other functionalizations. 8 refs.
Date: September 4, 1991
Creator: Ford, P.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Biological Conversion of Synthesis Gas Culture Development

Description: Research continues on the conversion of synthesis by shift reactions involving bacteria. Topics discussed here include: biological water gas shift, sulfur gas utilization, experimental screening procedures, water gas shift studies, H{sub 2}S removal studies, COS degradation by selected CO-utilizing bacteria, and indirect COS utilization by Chlorobia. (VC)
Date: March 1, 1992
Creator: Klasson, K. T.; Basu, R.; Johnson, E. R.; Clausen, E. C. & Gaddy, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Selective catalytic reduction of sulfur dioxide to elemental sulfur

Description: Elemental sulfur recovery from SO[sub 2]-containing gas streams is highly attractive as it produces a saleable. Product and no waste to dispose of. However, commercially available schemes are complex and involve multi-stage reactors, such as, most notably in the Resox (reduction of SO[sub 2] with coke) and Claus plants(reaction of SO[sub 2] with H[sub 2]S over catalyst). This project win investigate a cerium oxide catalyst for the single-stage selective reduction SO[sub 2] to elemental sulfur b… more
Date: January 1, 1992
Creator: Liu, Wei; Flytzani-Stephanopoulos, M. & Sarofim, A.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Studies Relevant to the Catalytic Activation of Carbon Monoxide

Description: Research activity during the 1991--1992 funding period has been concerned with the following topics relevant to carbon monoxide activation. (1) Exploratory studies of water gas shift catalysts heterogenized on polystyrene based polymers. (2) Mechanistic investigation of the nucleophilic activation of CO in metal carbonyl clusters. (3) Application of fast reaction techniques to prepare and to investigate reactive organometallic intermediates relevant to the activation of hydrocarbons toward carb… more
Date: June 4, 1992
Creator: Ford, P. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of an electrochemical hydrogen separator

Description: The EHS is an electrochemical hydrogen separator based on the uniquely reversible nature of hydrogen oxidation-reduction reactions in electrochemical systems. The principle and the hardware concept are shown in Figure 1. Hydrogen from the mixed gas stream is oxidized to H{sup +} ions, transported through a cation transport electrolyte membrane (matrix) under an applied electric field and discharged in a pure hydrogen state on the cathode. The cation transfer electrolyte membrane provides a barr… more
Date: September 1, 1993
Creator: Abens, S.; Fruchtman, J. & Kush, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A Calcium Oxide Sorbent Process for Bulk Separation of Carbon Dioxide. Quarterly Progress Report No. 18, October 1993--December 1993

Description: This research project is investigating the technical feasibility of a high-temperature, high-pressure (HTHP) process for the bulk separation of CO{sub 2} from coal-derived gas. Phase I research, in which an electrobalance reactor was used to establish the technical feasibility of the regenerable sorbent process, was completed in March 1992 and results have been fully described in earlier quarterly reports. In Phase I, the calcination and carbonation characteristics of three calcium sorbents wer… more
Date: January 1994
Creator: Harrison, D. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of options for CO{sub 2} capture/utilization/disposal

Description: The project objective is to develop engineering evaluations of technologies for the capture, use, and disposal of carbon dioxide (CO{sub 2}). This project emphasizes CO{sub 2}-capture technologies combined with integrated gasification combined cycle (IGCC) power systems. Complementary evaluations address CO{sub 2} transportation, CO{sub 2} use, and options for the long-term sequestration of unused CO{sub 2}. Commercially available CO{sub 2}-capture technology is providing a performance and econ… more
Date: August 1, 1994
Creator: Doctor, R. D. & Livengood, C. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Biological Conversion of Synthesis Gas. [Chlorobium Thiosulfatophilum, Chlorobium Phaeobacteroides, and Rhodospirillum Rubrum]

Description: The anaerobic bacterium Rhodospirillum rubrum has been chosen for catalysis of the biological water gas shift reaction. Two bacteria, Chlorobium thiosulfatophilum and Chlorobium phaeobacteroides, are being evaluated as candidates for H{sub 2}S conversion to elemental sulfur. Since these latter two organisms both grow and convert H{sub 2}S in batch culture using standard basal medium, the choice of a suitable bacterium must be made in consideration of specific growth and uptake rates. Produced e… more
Date: January 6, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ethanol synthesis and water gas shift over bifunctional sulfide catalysts

Description: During this quarter, the high pressure (up to 100 atm), high temperature (up to 350{degrees}C) catalyst testing system was rebuilt with clean tubing, etc. A new preparation of MoS{sub 2} catalyst was carried out, and this catalyst will be doped with alkali and tested during the next quarter of research.
Date: June 1, 1992
Creator: Klier, Kamil; Herman, Richard G. & Richards-Babb, Michelle
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Biological Conversion of Synthesis Gas

Description: The anaerobic, photosynthetic bacterium Rhodospirillum rubrum has been chosen for catalysis of the biological water gas shift reaction. In addition, two other anaerobic, photosynthetic bacteria, Chlorobium thiosulfatophilum and Chloroblum phaeobacteroides, have been evaluated as candidates for H{sub 2}S conversion to elemental sulfur. Growth and H{sub 2}S uptake studies in the presence of basal medium indicated that C. thlosulfatophilum is a much superior organism. C. phaeobacteroldes showed sp… more
Date: April 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ethanol synthesis and water gas shift over bifunctional sulfide catalysts. Technical progress report, June 1993--August 1993

Description: Various preparation methods of synthesizing molybdenum disulfide and various alkali doping procedures were studied to determine if various preparation paramenters affected catalyst activity. Testing was performed on an undoped molybdenum disulfide sample with H{sub 2}/CO = 1 synthesis gas at 8.1 MPa and at temperatures of 245, 255, 265, 275, 280, 300, 320, and 295C, and only hydrocarbons were formed. A methanol injection experiment with undoped catalyst showed that homologation of methanol did … more
Date: September 1993
Creator: Klier, K.; Herman, R. G.; Deemer, M. & Carr, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Prediction of thermodynamic properties of coal derivatives. Final technical report, March 1, 1991--February 28, 1994

Description: We have developed new equations of state for pure-component chain molecules. The excellent performance of complicated theories, such as the Generalized Flory Dimer (GFD) theory can be mimicked by simpler equations, if assumptions for the shape parameters are made. We developed engineering correlations based on GFD theory, using local composition theory to take into account attractive forces. During this period, we compared methods for calculating repulsive and attractive contributions to equati… more
Date: September 1993
Creator: Donohue, M. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Calcium Oxide Sorbent Process for Bulk Separation of Carbon Dioxide. Quarterly Progress Report 19, January--March, 1994

Description: This research project is investigating the technical feasibility of a high-temperature, high-pressure (HTHP) process for the bulk separation of CO{sub 2} from coal-derived gas. Indirect evidence which suggested that the water-gas shift reaction occurred simultaneously with CO{sub 2} removal was found. Occurrence of the simultaneous reactions created the possibility of a direct one-step process for the manufacture of hydrogen from coal-gas while at the same time separating a concentrated stream … more
Date: April 1994
Creator: Harrison, D. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ethanol synthesis and water gas shift over bifunctional sulfide catalysts. Technical progress report, December 1993--February 1994

Description: During this quarter, a 10 wt % CsOOCH/MoS{sub 2} catalyst was prepared for catalytic testing using slight modifications of previous attempted preparations. The MoS{sub 2} was prepared from MoS{sub 3} via thermal decomposition. The resultant product was then doped using an aqueous solution of cesium formate under vacuum. The doped catalyst was then loaded into a single pass fixed-bed tubular flow reactor under nitrogen to minimize exposure to air. The catalyst was pretreated with 2 vol % H{sub 2… more
Date: April 1994
Creator: Klier, K.; Herman, R. G. & Deemer, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A survey of processes for producing hydrogen fuel from different sources for automotive-propulsion fuel cells

Description: Seven common fuels are compared for their utility as hydrogen sources for proton-exchange-membrane fuel cells used in automotive propulsion. Methanol, natural gas, gasoline, diesel fuel, aviation jet fuel, ethanol, and hydrogen are the fuels considered. Except for the steam reforming of methanol and using pure hydrogen, all processes for generating hydrogen from these fuels require temperatures over 1000 K at some point. With the same two exceptions, all processes require water-gas shift reacto… more
Date: March 1996
Creator: Brown, L.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Calcium Oxide Sorbent Process for Bulk Separation of Carbon Dioxide. Quarterly Progress Report, April 1993--June 1993

Description: This research project is investigating the technical feasibility of a high-temperature, high pressure (HTHP) process for the bulk separation Of CO{sub 2} from coal-derived gas. Phase I research, in which an electrobalance reactor was used to establish the technical feasibility of the regenerable sorbent process, was completed in March 1992 and results have been fully described in earlier quarterly reports. In Phase 1, the calcination and carbonation characteristics of three calcium sorbents wer… more
Date: July 1993
Creator: Harrison, D. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ethanol synthesis and water gas shift over bifunctional sulfide catalysts. Technical progress report, September 1992--November 1992

Description: During this quarter, the surface areas of various catalysts were determined. The surface area of the catalyst tested last quarter was determined for the undoped catalyst, the doped catalyst before testing, and the doped catalyst after testing. These surface areas were then compared with ones reported earlier. After testing under high temperature and high pressure conditions for 551 hours, there was a loss of surface area. This might be due possibly to agglomeration of cesium formate on the surf… more
Date: December 1992
Creator: Klier, K.; Herman, R. G. & Deemer, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ethanol synthesis and water gas shift over bifunctional sulfide catalysts

Description: During this quarter, the surface areas of various catalysts were determined. The surface area of the catalyst tested last quarter was determined for the undoped catalyst, the doped catalyst before testing, and the doped catalyst after testing. These surface areas were then compared with ones reported earlier. After testing under high temperature and high pressure conditions for 551 hours, there was a loss of surface area. This might be due possibly to agglomeration of cesium formate on the surf… more
Date: December 1, 1992
Creator: Klier, Kamil; Herman, Richard G. & Deemer, Michael
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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