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Exploratory coprocessing research

Description: The objectives of this project were to (1) study the scope of the beneficial effects of hydrothermal pretreatment of coal on subsequent conversion, (2) identify and study the chemical or physical causes of this effect, and (3) attempt to elucidate the chemistry responsible for any coal-resid synergisms.
Date: September 5, 1991
Creator: Hirschon, A. S.; Tse, D. S.; Malhotra, R.; McMillen, D. F. & Ross, D. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Identification and cleavage of breakable single bonds by selective oxidation, reduction, and hydrolysis. Quarterly report No. 12, June 1-September 30, 1981

Description: We assume that bituminous coal consists mostly of an aggregate of condensed aromatic and aliphatic rings, connected and made insoluble (but swellable) by crosslinks containing single bonds. The objective of this project is to determine the proportions of the various kinds of connecting links and how they can best be broken - in other words, to determine the structure of bituminous coal, with emphasis on the crosslinks and breakable single bonds. The program began with an investigation of the st… more
Date: November 12, 1981
Creator: Hirschon, A. S.; Zevely, J. & Mayo, F. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Synthesis of model compounds for coal liquefaction research

Description: The objectives of this project are to develop feasible synthetic routes to produce (1) 4(4{prime}- hydroxy- 5{prime},6{prime},7{prime},8{prime}- tetrahydro-1{prime}- naphthylmethyl)- 6-methyl dibenzothiophene, and (2) a 1-hydroxy naphthalene- dibenzothiophene polymer. These compounds are thought to be representative of sulfur containing molecules in coal. The program is divided into three tasks, the first of which is a project work plan that we have already submitted. Our experimental work duri… more
Date: November 2, 1990
Creator: Hirschon, A. S.; Asaro, M. & Bottaro, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Exploratory coprocessing research

Description: The objectives of this project are to: (1) study the scope of hydrothermal pretreatment of coal on subsequent conversion, (2) identify and study the chemical or physical causes of this effect, and (3) attempt to elucidate the chemistry responsible for any coal-resid synergisms. This project is divided into three tasks. This quarter we concentrated on Tasks 1 and 2. Task 1: Scope of aqueous pretreatment. Task 2: Chemistry of Pretreatment. Also during this quarter we investigated other means of p… more
Date: November 2, 1990
Creator: Hirschon, A. S.; Tse, D. S.; Malhotra, R.; McMillen, D. F. & Ross, D. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Novel catalytic methods for heteroatom removal in coal liquids upgrading. Quarterly report No. 3, March 1, 1983-June 1, 1984

Description: The goal of this project is to optimize the reaction conditions for upgrading coal liquids. Our results for this quarter are summarized: Last quarter we found that H/sub 2/S aids in the HDN process. During this quarter, we have undertaken an H/sub 2/S concentration study on this reaction and found a direct correlation between the amount of added H/sub 2/S and the reduction in nitrogen content. For comparison, we also used H/sub 2/O and Na/sub 2/S as additives; however, neither appears to be as … more
Date: June 1, 1984
Creator: Laine, R. M.; Hirschon, A. S. & Wilson, R. B., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Highly dispersed catalysts for coal liquefaction

Description: The objectives of this project are to study the effect of pretreatment methods on the two-stage liquefaction process. In particular, the effects of dispersed catalysts and carbon monoxide atmospheres on a coal liquefaction process. The project is divided into three technical tasks. Task 1 and 2 deal with the analyses and liquefaction experiments, respectively, whereas Task 3 deals with the economic impact of utilizing the pretreatment methods. This quarter we concentrated on Tasks 1 and 2, whic… more
Date: November 5, 1992
Creator: Hirschon, A. S. & Wilson, R. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Dissolving coal at moderate temperatures and pressures. Final report, August 20, 1982-September 30, 1984. [Benzylamine]

Description: The main objectives of this research were to make Illinois No. 6 coal liquid or soluble with inexpensive reagents (e.g., solvolysis with methanol and acids), without high pressure equipment, and to see if our soluble products would be more reactive than whole coal in liquefaction processes. These efforts are unpromising. However, efforts to make coal soluble by oxidation with nitric acid gave encouraging results. When Illinois No. 6 and Wyodak coals were allowed to stand in sunlight for 282 day… more
Date: September 21, 1984
Creator: Mayo, F. R.; Hirschon, A. S. & Sundback, K. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Low severity conversion of activated coal

Description: The results suggest that coal contains regions with structural components significantly reactive under the hydrothermal environment. Although the specific mechanism for this process remains to be developed, this activity is reminiscent of findings in studies of accelerated maturation of oil shale, where hydrothermal treatment (hydrous pyrolysis) leads to the production of petroleum hydrocarbons. In line with what has been seen in the oil shale work, the pretreatment-generated hydrocarbons and p… more
Date: January 1, 1990
Creator: Hirschon, A. S. & Ross, D. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Highly dispersed catalysts for coal liquefaction. Quarterly report No. 9, August 23, 1993--November 22, 1993

Description: We analyzed two sets of liquefaction experiments, one involved the liquefaction of Black Thunder Coal with the corresponding recycle vehicle, and the second set of liquefaction runs involved the liquefaction of Argonne North Dakota Lignite. We compared coal conversions of Black Thunder coal and recycle solvent using Fe(CO){sub 5} and carbon monoxide/hydrogen atmospheres and a MolyVanL molybdenum catalyst under a hydrogen atmosphere. We also continued our investigation of the effect of water on … more
Date: February 15, 1994
Creator: Hirschon, A. S. & Wilson, R. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Synthesis of model compounds for coal liquefaction research. Quarterly report No. 1, June 21, 1990--September 20, 1990

Description: The objectives of this project are to develop feasible synthetic routes to produce (1) 4(4`-hydroxy-5`,6`,7`,8`-tetrahydro-l`-naphthylmethyl )- 6-methyldibenzothiophene, and (2) a 1-hydroxynaphthalene-benzothiophene polymer. Our experimental work during this quarter concentrated on. As several possible synthetic routes to the target molecule, 4(4`-hydroxy-5`,6`,7`,8`-tetrahydro- l`-naphthylmethyl )-6-methyldibenzothiophene. We tried synthesizing the intermediates for our first method, in which … more
Date: November 2, 1990
Creator: Hirschon, A. S.; Asaro, M. & Bottaro, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Highly dispersed catalysts for coal liquefaction. Quarterly report No. 6, November 23, 1992--February 22, 1993

Description: The objectives of this project are to study the effect of pretreatment methods on the two-stage liquefaction process. In particular the effects of dispersed catalysts and carbon monoxide atmospheres on a coal liquefaction process. The project is divided into three technical tasks. Task 1 and 2 deal with the analyses and liquefaction experiments, respectively, whereas Task 3 deals with the economic impact of utilizing the pretreatment methods. This quarter concentrated on Tasks 1 and 2. which ar… more
Date: May 28, 1993
Creator: Hirschon, A. S. & Wilson, R. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Novel catalysts for methane activation. Quarterly report No. 2, January 1, 1993--March 31, 1993

Description: The objectives of this project are to test novel fullerene based catalysts for application in methane activation. Fullerenes are a recently discovered allotrope of carbon that have been found to possess unusual properties, some of which may be ideal for methane conversion to higher hydrocarbons. The project is divided into three technical tasks. Task 1 deals with the synthesis and characterization of the fullerenes and fullerene soots, Task 2 with the testing of the catalysts, and Task 3 with t… more
Date: July 7, 1993
Creator: Hirschon, A. S.; Malhotra, R. & Wilson, R. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Novel catalysts for methane activation. Quarterly report No. 5, October 1, 1993--December 31, 1993

Description: The objectives of this project are to test novel fullerene based catalysts for application in methane activation. During this period we investigated a novel method of activating carbon soot which was recently reported in literature. In this method, the soot is treated with carbon dioxide at temperatures of 850{degrees}C to give a microporous carbon with a high surface area. We repeated this activation step and found that the BET surface areas increased from approximately 125 m{sup 2}/g to over … more
Date: April 4, 1994
Creator: Hirschon, A. S.; Wu, H. J.; Malhotra, R. & Wilson, R. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Highly dispresed catalysts for coal liquefaction. Quarterly report No. 10, November 23, 1993--February 22, 1994

Description: The objectives of this project are to study the effect of pretreatment methods on the two-stage liquefaction process. In particular, the effects of dispersed catalysts and carbon monoxide atmospheres on a coal liquefaction process. The project is divided into three technical tasks. Task 1 and 2 deal with the analyses and liquefaction experiments, respectively, whereas Task 3 deals with the economic impact of utilizing the pretreatment methods. This quarter the authors concentrated on Tasks 1 an… more
Date: April 15, 1994
Creator: Hirschon, A. S. & Wilson, R. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Highly dispersed catalysts for coal liquefaction

Description: The objectives of this project are to study the effect of pretreatment methods on the two-stage liquefaction process. In particular, the effects of dispersed catalysts and carbon monoxide atmospheres on a coal liquefaction process. The project is divided into three technical tasks. Task 1 and 2 deal with the analyses and liquefaction experiments, respectively, whereas Task 3 deals with the economic impact of utilizing the pretreatment methods. This quarter we concentrated on Tasks 1 and 2, whic… more
Date: December 2, 1992
Creator: Hirschon, A. S. & Wilson, R. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Exploratory coprocessing research

Description: The objectives of this quarter's work were to conduct coprocessing experiments in our new microreactor system, where the reactors are agitated by an electric reciprocating saw. Since Wyodak coal was shown to be more susceptible to pretreatment in the larger, 300-mL autoclaves, we decided to begin with this coal. Coprocessing experiments were conducted using pretreatments at 250{degrees}C and at 350{degrees}C, where a ratio of 1 part coal and 2 parts Maya ATB and 1200 psig of hydrogen was heated… more
Date: April 1, 1990
Creator: Hirschon, A. S.; Tse, D. S.; Malhorta, R.; McMillen, D. F. & Ross, D. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Synthesis of model compounds for coal liquefaction research

Description: The objectives of this project are to develop feasible synthetic routes to produce (1) 4(4'-hydroxy-5',6',7',8'-tetrahydro-l'-naphthylmethyl)-6-methyldibenzothiophene, and (2) a 1-hydroxynaphthalene-benzothiophene polymer. Our experimental work during this quarter concentrated on. As several possible synthetic routes to the target molecule, 4(4'-hydroxy-5',6',7',8'-tetrahydro-l'-naphthylmethyl)-6-methyldibenzothiophene. We tried synthesizing the intermediates for our first method, in which we c… more
Date: November 2, 1990
Creator: Hirschon, A. S.; Asaro, M. & Bottaro, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High dispersed catalysts for coal liquefaction. Quarterly report No. 7, February 23, 1993--May 22, 1993

Description: The objectives of this project are to study the effect of pretreatment methods on the two-stage liquefaction process. In particular, the effects of dispersed catalysts and carbon monoxide atmospheres on a coal liquefaction process. The project is divided into three technical tasks. Task 1 involves the analyses of the liquefaction products derived from liquefaction experiments using the catalysts Fe(CO){sub 5} and the sulfated iron catalyst, Fe{sub 2}O{sub 3}{center_dot}SO{sub 4}. We also analyz… more
Date: August 19, 1993
Creator: Hirschon, A. S. & Wilson, R. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Synthesis of model compounds for coal liquefaction research: Final report, June 21, 1990--July 30, 1993

Description: The objectives of this project were to develop feasible synthetic routes to produce (1) 4(4{prime}-hydroxy-5{prime}6{prime},7{prime}8{prime}-tetrahydro-1{prime}-naphthylmethyl)-6-methyldibenzothiophene, and (2) a 1-hydroxynaphthalene-dibenzothiophene polymer. These compounds are thought to be representative of sulfur containing molecules in coal. The program was divided into two technical tasks. Unfortunately, the attempted syntheses of these compounds was unsuccessful due to their unusual reac… more
Date: July 1, 1993
Creator: Hirschon, A. S.; Asaro, M. & Bottaro, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Exploratory coprocessing research. Quarterly report Number 9, September 1--November 30, 1990

Description: The objectives of this project are to: (1) study the scope of hydrothermal pretreatment of coal on subsequent conversion, (2) identify and study the chemical or physical causes of this effect, and (3) attempt to elucidate the chemistry responsible for any coal-resid synergisms. This project is divided into three tasks. This quarter the authors concentrated on Tasks 2 and 3 as described below. Task 2: chemistry of pretreatment. This Quarter they continued their investigation of the chemistry of … more
Date: May 1, 1991
Creator: Hirschon, A. S.; Tse, D. T.; Malhotra, R.; McMillen, D. F. & Ross, D. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Exploratory coprocessing research. Quarterly report Number 10, December 1, 1990--February 28, 1991

Description: The objectives of this project are to: (1) study the scope of hydrothermal pretreatment of coal on subsequent conversion, (2) identify and study the chemical or physical causes of this effect, and (3) attempt to elucidate the chemistry responsible for any coal-resid synergisms. This project is divided into three tasks. This quarter the authors concentrated on Tasks 1 and 2 as described below. Task 1: scope of hydrothermal pretreatment. The report contains a preprint submitted to the upcoming AC… more
Date: May 1, 1991
Creator: Hirschon, A. S.; Tse, D. T.; Malhotra, R.; McMillen, D. F. & Ross, D. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Novel catalysts for methane activation. Quarterly report No. 9, October 1, 1994--December 31, 1994

Description: Fullerenes are a recently discovered allotrope of carbon that have been found to possess unusual properties, some of which may be ideal for methane activation. This project is designed to evaluate these carbon-based materials for conversion of methane into higher hydrocarbons. The project is divided into three technical tasks. Task 1 deals with synthesis and characterization of the fullerenes and fullerene soots, Task 2 with testing of the catalysts, and Task 3 with evaluation of the results an… more
Date: April 20, 1995
Creator: Hirschon, A. S.; Wu, H. J.; Malhotra, R. & Wilson, R. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Novel catalysts for methane activation. Quarterly report No. 12, July 1, 1995--September 30, 1995

Description: Fullerenes are a recently discovered allotrope of carbon that possess unusual properties, some of which may be ideal for methane activation. This project is designed to evaluate these carbon-based materials for conversion of methane into higher hydrocarbons. The project is divided into three technical tasks. Task 1 deals with synthesis and characterization of the fullerenes and fullerene soots, Task 2 with testing of the catalysts, and Task 3 with evaluation of the results and technical reporti… more
Date: December 1, 1995
Creator: Hirschon, A. S.; Du, Y. & Wu, H. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Highly dispersed catalysts for coal liquefaction. Phase 1 final report, August 23--November 22, 1994

Description: The ultimate goal of this project is to develop novel processes for making the conversion of coal into distillable liquids competitive to that of petroleum products in the range of $25/bbl. The objectives of Phase 1 were to determine the utility of new precursors to highly dispersed catalysts for use of syngas atmospheres in coal liquefaction, and to estimate the effect of such implementation on the cost of the final product. The project is divided into three technical tasks. Tasks 1 and 2 are … more
Date: March 22, 1995
Creator: Hirschon, A. S.; Wilson, R. B. & Ghaly, O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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