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[Experimental and kinetic modeling of acid/base and redox reactions over oxide catalysts]

Description: The research has involved the characterization of catalyst acidity, [sup 2]D NMR studies of Bronsted acid sites, and kinetic, calorimetric, and spectroscopic studies of methylamine synthesis and related reactions over acid catalysts. Approach of this work was to explore quantitative correlations between factors that control the generation, type, strength, and catalytic properties of acid sites on zeolite catalysts. Microcalorimetry, thermogravimetric analysis, IR spectroscopy, and NMR spectrosc… more
Date: January 1, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High octane ethers from synthesis gas-derived alcohols. Quarterly technical progress report, April--June 1993

Description: The results shown in Figures 10 and 11 demonstrate that the formation of butenes was very sensitive to the alcohol partial pressure. A small elevation of the alcohol pressure suppressed the formation of butenes rather drastically at both 90 and 117{degree}C. The synthesis rates of DME, MIBE, and MTBE ethers were not significantly affected at 90{degree}C, although there was a trend to increase the space time yield of DME as the alcohol pressure was increased. At the reaction temperature of 117{d… more
Date: July 1, 1993
Creator: Klier, K.; Herman, R. G.; Menszak, J.; Johansson, M. A.; Feeley, O. C. & Kim, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High octane ethers from synthesis gas-derived alcohols. Quarterly technical progress report, October--December 1992

Description: The testing of strongly acidic catalysts for the conversion of a mixture of methanol and isobutanol to ethers and hydrocarbons was continued. Under standardized test conditions the catalysts tested this quarter were: phosphotungstic acid supported on zirconia (PW{sub 12}/ZrO{sub 2}), ``niobic acid`` (Nb{sub 2}O{sub 5}xH{sub 2}0), and an iron and manganese doped sulfate-modified zirconia (Fe/Mn/ZrO{sub 2}/SO{sub 4}{sup {minus}2}). The overall activity of these catalysts followed the order of Fe/… more
Date: February 1, 1993
Creator: Klier, K.; Herman, R. G.; Johansson, M. A. & Feeley, O. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High octane ethers from synthesis gas-derived alcohols. Quarterly technical progress report, October--December 1992, Revision 1

Description: The objective of the proposed research is to synthesize high octane ethers, primarily methyl isobutyl ether (MIBE) and methyl tertiary butyl ether (MTBE) directly from H{sub 2}/CO/CO{sub 2} coal-derived synthesis gas via alcohol mixtures that are rich in methanol and 2-methyl-l-propanol (isobutanol). The overall scheme involves gasification of coal, purification and shifting of the synthesis gas, higher alcohol synthesis, and direct synthesis of ethers. The testing of strongly acidic catalysts … more
Date: April 1, 1993
Creator: Klier, Kamil; Herman, Richard G.; Johansson, Marie A. & Feeley, Owen C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Synthesis of dimethyl ether and alternative fuels in the liquid phase from coal-derived synthesis gas. Final technical report

Description: Through the mid-1980s, Air Products has brought the liquid phase approach to a number of other synthesis gas reactions where effective heat management is a key issue. In 1989, in response to DOE`s PRDA No. DE-RA22-88PC88805, Air Products proposed a research and development program entitled ``Synthesis of Dimethyl Ether and Alternative Fuels in the Liquid Phase from Coal Derived Syngas.`` The proposal aimed at extending the LPMEOH experience to convert coal-derived synthesis gas to other useful … more
Date: February 1, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Synthesis of octane enhancers during slurry-phase Fischer-Tropsch. Quarterly technical progress report No. 9, October 1, 1992--December 31, 1992

Description: Figure 7 summarizes the carbon selectivities observed towards the main products. During Period IV, the main products observed were the heavy hydrocarbons, with selectivity for MTBE being less than 3--5%. The only time that high MTBE selectivity was noted was during period III, when the i-butylene feed was shut-off. The large amounts of heavy products and the low selectivity to MTBE were surprising in view of our previous experiments in the gas phase and the high methanol-to-i-butylene ratio use… more
Date: June 30, 1993
Creator: Marcelin, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Synthesis of dimethyl ether and alternative fuels in the liquid phase from coal-derived synthesis gas. Task 3.2: Screen novel catalyst systems; Task 3.3:, Evaluation of the preferred catalyst system

Description: As part of the DOE-sponsored contract ``Synthesis of Dimethyl Ether and Alternative Fuels in the Liquid Phase from Coal-Derived Syngas`` experimental evaluations of the one-step synthesis of alternative fuels were carried out. The objective of this work was to develop novel processes for converting coal-derived syngas to fuels or fuel additives. Building on a technology base acquired during the development of the Liquid Phase Methanol (LPMEOH) process, this work focused on the development of sl… more
Date: January 1, 1993
Creator: Underwood, R. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Energy and crude oil input requirements for the production of reformulated gasolines

Description: The energy and crude oil requirements for the production of reformulated gasoline (RFG) are estimated. The scope of the study includes both the energy and crude oil embodied in the final product and the process energy required to manufacture the RFG and its components. The effects on energy and crude oil use of employing various oxygenates to meet the minimum oxygen-content level required by the Clean Air Act Amendments are evaluated. The analysis shows that production of RFG requires more tota… more
Date: October 1, 1993
Creator: Singh, M. & McNutt, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Synthesis of dimethyl ether and alternative fuels in the liquid phase from coal-derived synthesis gas

Description: As part of the DOE-sponsored contract Synthesis of Dimethyl Ether and Alternative Fuels in the Liquid Phase from Coal-Derived Syngas'' experimental evaluations of the one-step synthesis of alternative fuels were carried out. The objective of this work was to develop novel processes for converting coal-derived syngas to fuels or fuel additives. Building on a technology base acquired during the development of the Liquid Phase Methanol (LPMEOH) process, this work focused on the development of slur… more
Date: January 1, 1993
Creator: Underwood, Richard P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High octane ethers from synthesis gas-derived alcohols. [Methyl isobutyl ether(MIBE) and methyl tertiary butyl ether(MTBE)]

Description: The testing of strongly acidic catalysts for the conversion of a mixture of methanol and isobutanol to ethers and hydrocarbons was continued. Under standardized test conditions the catalysts tested this quarter were: phosphotungstic acid supported on zirconia (PW[sub 12]/ZrO[sub 2]), niobic acid'' (Nb[sub 2]O[sub 5]xH[sub 2]0), and an iron and manganese doped sulfate-modified zirconia (Fe/Mn/ZrO[sub 2]/SO[sub 4][sup [minus]2]). The overall activity of these catalysts followed the order of Fe/Mn… more
Date: February 1, 1993
Creator: Klier, Kamil; Herman, Richard G.; Johansson, Marie A. & Feeley, Oowen C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High octane ethers from synthesis gas-derived alcohols. Quarterly technical progress report, July--September 1993

Description: The objective of the proposed research is to synthesize oxygenated fuel ethers, primarily methyl isobutyl ether (MIBE) and methyl tertiary butyl ether (MTBE), directly from coal-derived H{sub 2}/CO/CO{sub 2} synthesis via alcohol mixtures that are rich in methanol and 2-methyl-1-proanol (isobutanol). The overall scheme involves gasification of coal, purification and shifting of the synthesis gas, higher alcohol synthesis, and direct synthesis of ethers. Both organic and inorganic catalysts will… more
Date: November 1, 1993
Creator: Klier, K.; Herman, R. G.; Feeley, O. C. & Johansson, M. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Energy and crude oil input requirements for the production of reformulated gasolines

Description: The energy and crude oil requirements for the production of reformulated gasolines (RFG) are estimated. Both the energy and crude oil embodied in the final product and the process energy required to manufacture the RFG and its components are included. The effects on energy and crude oil use of using various oxygenates to meet the minimum oxygen content level required by the Clean Air Act Amendments are evaluated. The analysis illustrates that production of RFG requires more total energy than th… more
Date: November 1, 1993
Creator: Singh, M. & McNutt, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Synthesis of octane enhancers during slurry-phase Fischer-Tropsch. Quarterly technical progress report No. 8, July 1, 1992--September 30, 1992

Description: The initial work on the synthesis of MTBE during CO hydrogenation shows that MTBE cannot be formed directly on metal sites and likely requires the presence of an acid site. However, MTBE can be made successfully when an acid site, provided by the zeolites, is present in the vicinity of the methanol-synthesis metal sites. When i-butylene was added during CO hydrogenation over a composite catalyst consisting of Li-Pd/SiO{sub 2} and a hydrogen-zeolite, MTBE was formed in measurable amounts. The ma… more
Date: July 7, 1993
Creator: Marcelin, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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First Biomass Conference of the Americas: Energy, environment, agriculture, and industry. Proceedings, Volume 2

Description: This conference was designed to provide a national and international forum to support the development of a viable biomass industry. Although papers on research activities and technologies under development that address industry problems comprised part of this conference, an effort was made to focus on scale-up and demonstration projects, technology transfer to end users, and commercial applications of biomass and wastes. The conference was divided into these major subject areas: Resource Base, … more
Date: October 1, 1993
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The economical production of alcohol fuels from coal-derived synthesis gas. Seventh quarterly technical progress report, April 1, 1993--June 30, 1993

Description: An analysis of the current base cases has been undertaken to determine if the economic status of the proposed alcohol fuels may benefit from economies of scale. This analysis was based on a literature review which suggested that plants of capacities substantially below 5000 metric tons/day are unlikely to be competitive for the bulk production of alcohols for fuel consumption or chemicals manufacture. The preliminary results of this scale up procedure would indicate that the capacity of the cur… more
Date: July 1, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Status and future opportunities for conversion of synthesis gas to liquid energy fuels: Final report

Description: The manufacture of liquid energy fuels from syngas (a mixture of H[sub 2] and CO, usually containing CO[sub 2]) is of growing importance and enormous potential because: (1) Abundant US supplies of coal, gas, and biomass can be used to provide the needed syngas. (2) The liquid fuels produced, oxygenates or hydrocarbons, can help lessen environmental pollution. Indeed, oxygenates are required to a significant extent by the Clean Air Act Amendments (CAAA) of 1990. (3) Such liquid synfuels make pos… more
Date: May 1, 1993
Creator: Mills, G. (Delaware Univ., Newark, DE (United States). Center for Catalytic Science and Technology)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Immobilized enzymes in organic media: Determinants of water dependence. Interim report

Description: The overall goals of our DOE-funded project are to investigate the critical factors that limit commercial scale applications of enzymes in organic solvents, and to scale-up a process for the production of a precursor to optically active polymers. Initially, we are attempting to quantify the effect of intra-particle dynamics on overall process performance. This involves examination of coupled enzyme kinetics, solubility, wetting and mass transfer effects toward support selection, reactor design/… more
Date: June 1, 1993
Creator: Nandi, S.; DeFilippi, I.; Bedwell, B. & Zemel, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Steam Pretreatment for Coal Liquefaction. [Monthly Report], December 1, 1993--December 31, 1993

Description: The effect of exposing coal sample no. 31 which was pretreated in steam to air was tested this month. Significant differences from yields obtained with the previously used sample is observed. Consequently, averaging yields from the two samples is not appropriate and the pattern of behavior of each set must be determined separately. Further work will be done using new Illinois No.6 coal sample. Analysis of the products of aquathermolysis of {beta}benzylnaphthyl ether in presence of liquid water … more
Date: January 10, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Steam Pretreatment for Coal Liquefaction. [Monthly Report], August 1, 1993--August 31, 1993

Description: Rapid heating liquefaction of steam pretreated Illinois No.6 coal mixed with 13X zeolite was carried out this month. The pores of this zeolite retain pyridine during drying, but not enough to account for the low apparent yield of pyridine extract. Soxhlet extraction analysis of the product showed a significantly lower oil yield compared with 5A zeolite. This might be caused by retention of tetralin in 13x zeolite pores. Tetralin retention will be determined subsequently. A test of 4A zeolite is… more
Date: September 10, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Synthesis of new high performance lubricants and solid lubricants

Description: In our second year of funding we began the testing phase of a number of new classes of lubricants. Three different testing collaborations have already begun and a fourth one is In the works with Dr. Stephen Hsu of the National Institute of Standards and Technology. Dr. Hsu also plans to test some of the same materials for us that Shell Development is studying. With Dr. Bill Jones of NASA, we are studying the effects of branching an high temperature lubricant properties in perfluoropolyethers, I… more
Date: April 8, 1993
Creator: Lagow, Richard J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Steam Pretreatment for Coal Liquefaction. [Monthly Report], November 1, 1993--November 30, 1993

Description: Two slow heating liquefaction runs of steam pretreated coal were carried out using the new sample (No.31) of Illinois No.6 coal to check consistency with previous samples. Good agreement was obtained between the runs made with new sample. There were, however, significant differences from yields obtained with the previously used sample. Consequently, averaging yields from the two samples is not appropriate. Further work on this new Illinois No.6 coal sample will be continued next month. Purifica… more
Date: December 10, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Steam Pretreatment for Coal Liquefaction. [Monthly Report], September 1, 1993--September 30, 1993

Description: Rapid heating liquefaction of steam pretreated Illinois No.6 coal mixed with 4A zeolite was carried out this month. Liquefaction yields are close to those obtained with 5A zeolite at the same coal/zeolite ration. Aquathermolysis of model compound 9-phenoxyphenanthrene was carried out this month under conditions similar to employed by Katritzky but for shorter time. Analysis of recovered products showed incomplete cleavage of the ether. This demonstrates the importance of longer reaction time ev… more
Date: October 10, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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