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in subjects: "Hydrogenation And Liquefaction"

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Effect of pretreating of host oil on coprocessing. Quarterly progress report, October 1, 1993--December 31, 1993

In the last quarterly report we presented results of coprocessing runs made with an Illinois No. 6 coal and an AMOCO VTR (as received) and after the heavy oil had been pretreated a number of different ways. Coal conversions and product yields were presented for each coprocessing experiment. We have now further analyzed results from coprocessing experiments in order to estimate the yields of coal-derived gas, asphaltenes and oil products. Although coal-derived products can not be measured direct… more

Date: February 13, 1994

Creator: Wender, I. & Tierney, J. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Effect of pretreating of host oil on coprocessing. Quarterly progress report, January 1, 1993--March 31, 1993

The principal objective of this research is to determine the role that host petroleum-derived oils (1000 {degree}F{sup +}), as that of catalytically treated host oils, play when used as liquefaction solvents in coprocessing with coal. The host oils will be extensively characterized and then pretreated in a number of ways which involve catalytic reactions such as hydrogenation, hydrocracking, and isomerization. The pretreated oils will then be characterized by elemental analysis, catalytic dehyd… more

Date: May 11, 1993

Creator: Wender, I. & Tierney, J. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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[Toxicity studies of mild gasification products]. [Quarterly report, January 1, 1993--March 31, 1993]

Both IST No. 9 and IST No. 10 displayed mutagenic activity only in the presence of S9 metabolic activation. The mutagenicity of IST No. 9 to TA98 (with S9 activation) was low, but positively confirmed using both solvents (Table 1) . The mutagenic activity of IST No. 9 was also detected, as noted in Table 1, on TA100 with S9 activation when solvated in DMSO. Although some doubling of the revertant number was noted in confirmatory tests, no dose-response could be elucidated; therefore, the mutage… more

Date: October 1993

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Improved performance in coprocessing through fundamental and mechanistic studies in hydrogen transfer and catalysis. Quarterly report, December 26, 1989--March 26, 1990

To gain a fundamental understanding of the role and importance of hydrogen transfer reactions in thermal and catalytic coprocessing by examining possible hydrogen donation from cycloalkane/aromatic systems and by understanding the chemistry and enhanced reactivity of hydrotreated residuum, as well as by enriching petroleum solvent with potent new donors, nonaromatic hydroaromatics, thereby promoting hydrogen transfer reactions in coprocessing. The detailed results of experiments performed on se… more

Date: 1990

Creator: Curtis, C. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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The role of the resid solvent in coprocessing with finely divided catalysts. Quarterly report, January--March 1994

The research reported in this progress report describes the continuation of coal-resid coprocessing reactions which were begun last quarter (October to December 1993). During, last quarter, Maya and FHC-623 resid were evaluated as whole resids and as the hexane soluble fraction in noncatalytic and catalytic reactions at 400{degree}C. During this current quarter, reactions were performed using Pittsburgh No. 8 bituminous coal and several different solvents including Maya and FHC-623 resids. In o… more

Date: July 1, 1994

Creator: Curtis, C. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Improved performance in coprocessing through fundamental and mechanistic studies in hydrogen transfer and catalysis. Quarterly report, March 27, 1991--June 26, 1991

The objective is to gain a fundamental understanding of the role and importance of hydrogen transfer reactions in thermal and catalytic coprocessing by examining possible hydrogen donation from cycloalkane/aromatic systems and by understanding the chemistry and enhanced reactivity of hydrotreated residuum, as well as by enriching petroleum solvent with potent new donors, nonaromatic hydroaromatics, thereby promoting hydrogen transfer reactions in coprocessing. The detailed results of experiment… more

Date: 1991

Creator: Curtis, C. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Improved performance in coprocessing through fundamental and mechanistic studies in hydrogen transfer and catalysis. Quarterly report, June 27, 1991--September 26, 1991

Date: 1991

Creator: Curtis, C. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Coprocessing through fundamental and mechanistic studies in hydrogen transfer and catalysis. Quarterly report, September 26, 1991--December 26, 1991

The research conducted during this quarter evaluated hydrogen transfer from hydroaromatics and cyclic olefins to aromatics under thermal and catalytic conditions. The reactions under study involved thermal reactions of a cyclic olefin, isotetralin (ISO), with aromatics, anthracene (ANT) and pyrene (PYR). These reactions completed a set of experiments with hydrogen-rich species and aromatics previously reported that included cycloalkanes of perhydropyrene (PHP) and perhydroanthracene (PHA), hydr… more

Date: 1991

Creator: Curtis, C. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Improved performance in coprocessing through fundamental and mechanistic studies in hydrogen transfer and catalysis. Quarterly report, March 27, 1990--June 26, 1990

Date: 1990

Creator: Curtis, C. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Improved performance in coprocessing through fundamental and mechanistic studies in hydrogen transfer and catalysis. Quarterly report, September 27, 1990--December 26, 1990

Date: 1990

Creator: Curtis, C. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Coprocessing through fundamental and mechanistic studies in hydrogen transfer and catalysis. Quarterly report, December 27, 1991--March 27, 1992

The research conducted this quarter evaluated hydrogen transfer from resids reduced using the Birch reduction method and their corresponding parent resid to an aromatic acceptor, anthracene (ANT). The reactions involved thermal and catalytic reactions using sulfur introduced as thiophenol. This catalyst has been shown by Rudnick to affect the hydrogen transfer from cycloalkane to aromatics/or coal. The purpose of this current study was to evaluate the efficacy of hydrogen transfer from the hydr… more

Date: 1992

Creator: Curtis, C. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Improved performance in coprocessing through fundamental and mechanistic studies in hydrogen transfer and catalysis. Quarterly report, December 27, 1990--March 26, 1991

Date: 1991

Creator: Curtis, C. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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[Production of low-cost hydrogen]. Technical progress report, October 1992--December 1992

The overall objective of the proposed effort is to verify, at the laboratory scale, the ability of the MTCI indirectly heated fluid-bed gasifier to economically produce a hydrogen-rich product gas from liquefaction byproduct streams and from char produced in mild gasification processes. An important objective of the proposed effort is to provide a process data base that can be utilized by the AMOCO Corporation in evaluating the design and economics of an integrated liquefaction process which em… more

Date: 1992

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Production of low-cost hydrogen. [Twelfth quarterly technical progress report, July 1, 1992--September 27, 1992]

This twelfth quarterly technical progress report presents the results of work accomplished during the period July 1, 1992 through September 27, 1992 under Contract No. DE-AC21-88MC26367 entitled ``Production of Low-Cost Hydrogen``. The overall objective of this program is to verify the ability of the MTCI indirectly heated fluid-bed gasifier to produce a hydrogen-rich product gas from liquefaction by-product streams and from char produced in mild gasification processes. The two-tube gasificatio… more

Date: 1992

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Synthesis and reactivity of ultra-fine coal liquefaction catalysts

The Pacific Northwest Laboratory is currently developing ultra-fine iron-based coal liquefaction catalysts using two new particle production technologies: (1) modified reverse micelles (MRM) and (2) rapid thermal decomposition of solutes (RTDS). These methodologies have been shown to allow control over both particle size (from 1 nm to 60 nm) and composition when used to produce ultra-fine iron-based materials. Powders produced using these methods are found to be selective catalysts for carbon-c… more

Date: October 1, 1992

Creator: Linehan, J. C.; Matson, D. W.; Fulton, J. L.; Bean, R. M. & Darab, J. G.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Changes in Organic Sulfur Compounds in Coal Macerals During Liquefaction

Several general trends were observed in reactivity patterns of sulfur compounds in macerals. Sulfur is reduced in the asphaltene fraction compared to initial maceral. Aliphatics are removed and polycyclic aromatic compounds are both stable and probably formed under these conditions. Molecules containing two sulfur atoms are formed. The preasphaltenes are now being analyzed by DEIHRMS.

Date: February 1, 1994

Creator: Winans, R. E.; Joseph, J. T. & Fisher, R. B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Activity testing of fine-particle size, iron catalysts for coal liquefaction

The use of fine-particle size (< 40 nm) unsupported catalysts in direct coal liquefaction may result in improved economics due to possible enhanced yields of desired products, the potential for decreasing reaction severity, and the possibility of using less catalyst. Sandia has developed a standard testing procedure for evaluating and comparing the fine-particle catalysts. The test procedure uses phenanthrene as the reaction solvent, the DECS-17 Blind Canyon Coal, and a statistical experimental… more

Date: October 1, 1993

Creator: Stohl, F. V.; Diegert, K. V. & Gugliotta, T. P.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Comparison of the activities of fine-particle size catalysts

The objectives of Sandia`s fine-particle size catalyst testing project are to evaluate and compare the activities of the fine-particle size catalysts being developed in DOE/PETCs Advanced Research Coal Liquefaction Program by using standard coal liquefaction test procedures. The standard procedures use Blind Canyon coal, phenanthrene as the reaction solvent, and a factorial experimental design with temperatures from 350{degrees}C to 400{degrees}C, reaction times from 20 to 60 minutes, and catal… more

Date: December 31, 1994

Creator: Stohl, F. V.; Diegert, K. V. & Goodnow, D. C.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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New catalysts for coal liquefaction and new nanocrystalline catalysts synthesis methods

The use of coal as a source of transportation fuel is currently economically unfavorable due to an abundant world petroleum supply and the relatively high cost of coal liquefaction. Consequently, a reduction in the cost of coal liquefaction, for example by using less and/or less costly catalysts or lower liquefaction temperatures, must be accomplished if coal is to play an significant role as a source of liquid feedstock for the petrochemical industry. The authors and others have investigated t… more

Date: September 1, 1994

Creator: Linehan, J. C.; Matson, D. W. & Darab, J. G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Hydrodynamic behavior of a liquid-solid fluidized-bed reactor for the bioconversion of coal particles to liquid products

A predictive mathematical model based on particle convection and dispersion is presented for a liquid fluidized bed of coal particles. The numerical representation can follow transient behavior of liquid fluidized beds that contain a defined particle-size distribution. The calculations exhibited excellent agreement when compared to experimental transient pressure-drop data from a column containing particles of Illinois No. 6 bituminous coal in the size range of 20 to 120 {mu}m. In addition, the… more

Date: October 1, 1993

Creator: Scott, T. C.; Kaufman, E. N.; Cosgrove, J. M.; Asif, M. & Petersen, J. N.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Reactivity of coals under coprocessing conditions

In the recent years greater interest has developed for processes involving coal and petroleum fractions to produce distillate fuels. Coprocessing is especially attractive as a direct liquefaction process because it involves the use of heavy petroleum fractions, so both coal and heavy petroleum resids are upgraded simultaneously. The main distinction of coprocessing from other direct liquefaction processes is that coprocessing is more complex from a chemical standpoint than direct liquefaction p… more

Date: June 1, 1992

Creator: Tomic, J. & Schobert, H. H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Coal liquefaction and gas conversion: Proceedings. Volume 1

Volume I contains papers presented at the following sessions: AR-Coal Liquefaction; Gas to Liquids; and Direct Liquefaction. Selected papers have been processed separately for inclusion in the Energy Science and Technology Database.

Date: December 31, 1993

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Results of catalyst testing using iron-based catalysts

As coal liquefaction catalysts, iron-based products are generally inferior to the more expensive molybdenum, cobalt, or nickel-based materials. However, the lower costs of production and recovery (or in the case of some iron catalysts, non-recovery) give the iron-based materials a potential economic advantage over the more efficient precious and semi-precious metal catalysts for this application. Recent research has shown that a number of different iron-containing materials can be successfully … more

Date: March 1, 1993

Creator: Linehan, J. C.; Darab, J. G. & Matson, D. W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Preparation of silica or alumina pillared crystalline titanates

Layered crystalline titanates (CT) [Anthony and Dosch, US Patent 5 177 045 (1993)] are pillared with tetraethyl orthosilicate, 3-aminopropyltrimethoxysilane, and aluminum acetylacetonate to prepare porous and high surface area supports for sulfided NiMo catalyst. Tetra-ethyl orthosilicate or aluminum acetylacetonate intercalated CT are prepared by stepwise intercalation. First, the basal distance is increased by n-alkylammonium ions prior to intercalation with inorganic compounds. However, an a… more

Date: May 1, 1994

Creator: Udomsak, S.; Nge, R.; Dufner, D. C.; Anthony, R. G. & Lott, S. E.

Item Type: Article

Partner: UNT Libraries Government Documents Department