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The thermodynamic properties of 2-methylaniline and trans-(R,S)- decahydroquinoline

Description: Measurements leading to the calculation of the ideal-gas thermodynamic properties for 2-methylaniline and trans-(R,S)-decahydroquinoline are reported. Experimental methods included combustion calorimetry, adiabatic heat-capacity calorimetry, comparative ebulliometry, inclined-piston gauge manometry, and differential-scanning calorimetry (dsc). Entropies, enthalpies, and Gibbs energies of formation were derived for the ideal gas at selected temperatures for both compounds. Critical properties we… more
Date: February 1, 1990
Creator: Steele, W. V.; Chirico, R. D.; Nguyen, A. & Knipmeyer, S. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The thermodynamic properties of benzothiazole and benzoxazole

Description: This research program, funded by the Department of Energy, Office of Fossil Energy, Advanced Extraction and Process Technology, provides accurate experimental thermochemical and thermophysical properties for key'' organic diheteroatom-containing compounds present in heavy petroleum feedstocks, and applies the experimental information to thermodynamic analyses of key hydrodesulfurization, hydrodenitrogenation, and hydrodeoxygenation reaction networks. Thermodynamic analyses, based on accurate in… more
Date: August 1, 1991
Creator: Steele, W. V.; Chirico, R. D.; Knipmeyer, S. E. & Nguyen, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thermodynamic properties of 9-methylcarbazole and 1,2,3,4-tetrahydro-9-methylcarbazole

Description: Removal of carbazole and its derivatives from heavy petroleum has proved to be particularly difficult using present technology. Studies have shown carbazole and its alkyl-homologs are the dominant nitrogen-containing components in clarified slurry oils, thereby indicating their low reactivity and/or formation during cat-cracking processes. The results reported here will point the way to the development of new methods of nitrogen removal from carbazole and its derivatives. Measurements leading t… more
Date: April 1, 1991
Creator: Steele, W. V.; Knipmeyer, S. E.; Nguyen, A. & Chirico, R. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The thermodynamic properties of 2,3-benzothiophene

Description: Upgrading of heavy fossil fuels is normally done by hydrotreating in the presence of catalysts at 5 to 15 MPa pressure of hydrogen and 575 to 700 K. The efficient use of expensive hydrogen in this process is essential to the economic viability of alternative fuel sources (heavy petroleum, tar sands, shale oil, and the products of the liquefaction of coal). 2,3-Benzothiophene is widely used as a model compound in catalyst-comparison and kinetic studies of the hydrodesulfurization (HDS) mechanism… more
Date: January 1, 1991
Creator: Chirico, R. D.; Knipmeyer, S. E.; Nguyen, A. & Steele, W. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The thermodynamic properties of 2-aminobiphenyl (an intermediate in the carbazole/hydrogen reaction network)

Description: Catalytic hydrodenitrogenation (HDN) is a key step in upgrading processes for conversion of heavy petroleum, shale oil, tar sands, and the products of the liquefaction of coal to economically viable products. This research program provides accurate experimental thermochemical and thermophysical properties for key organic nitrogen-containing compounds present in the range of alternative feedstocks, and applies the experimental information to thermodynamic analyses of key HDN reaction networks. T… more
Date: December 1, 1990
Creator: Steele, W. V.; Chirico, R. D.; Knipmeyer, S. E. & Nguyen, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The thermodynamic properties of thianthrene and phenoxathiin

Description: Measurements leading to the calculation of the ideal-gas thermodynamic properties are reported for thianthrene (Chemical Abstracts registry number [92-85-3]) and phenoxathiin (registry number [262-20-41]). Experimental methods included combustion calorimetry, adiabatic heat-capacity calorimetry, vibrating-tube densitometry, comparative ebulliometry, inclined-piston gauge manometry, and differential-scanning calorimetry (d.s.c.). Critical properties were estimated for both materials based on the… more
Date: April 1, 1993
Creator: Steele, W. V.; Chirico, R. D.; Knipmeyer, S. E. & Nguyen, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Determination of ideal-gas enthalpies of formation for key compounds:

Description: The results of a study aimed at improvement of group-contribution methodology for estimation of thermodynamic properties of organic and organosilicon substances are reported. Specific weaknesses where particular group-contribution terms were unknown, or estimated because of lack of experimental data, are addressed by experimental studies of enthalpies of combustion in the condensed phase, vapor-pressure measurements, and differential scanning calorimetric (d.s.c.) heat-capacity measurements. Id… more
Date: October 1, 1991
Creator: Steele, W. V.; Chirico, R. D.; Nguyen, A.; Hossenlopp, I. A. & Smith, N. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The thermodynamic properties of thianthrene and phenoxathiin

Description: Measurements leading to the calculation of the ideal-gas thermodynamic properties are reported for thianthrene (Chemical Abstracts registry number [92-85-3]) and phenoxathiin (registry number [262-20-41]). Experimental methods included combustion calorimetry, adiabatic heat-capacity calorimetry, vibrating-tube densitometry, comparative ebulliometry, inclined-piston gauge manometry, and differential-scanning calorimetry (d.s.c.). Critical properties were estimated for both materials based on the… more
Date: April 1, 1993
Creator: Steele, W. V.; Chirico, R. D.; Knipmeyer, S. E. & Nguyen, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DIPPER project 871 determination of ideal-gas enthalpies of formation for key compounds, The 1991 project results

Description: Results of a study aimed at improving group-contribution methodology for estimating thermodynamic properties of organic substances are reported. Specific weaknesses where particular group-contribution terms were unknown, or estimated because of lack of experimental data, are addressed by experimental studies of enthalpies of combustion in condensed phase, vapor-pressure measurements, and differential scanning calorimetric (d.s.c.) heat-capacity measurements. Ideal-gas enthalpies of formation of… more
Date: September 1, 1993
Creator: Steele, W. V.; Chirico, R. D.; Knipmeyer, S. E.; Nguyen, A. & Tasker, I. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The thermodynamic properties of 4,5,9,10-tetrahydropyrene and 1,2,3,6,7,8-hexahydropyrene

Description: Measurements leading to the calculation of the ideal-gas thermodynamic properties are reported for 4,5,9,10-tetrahydropyrene and 1,2,3,6,7,8-hexahydropyrene. Experimental methods included combustion calorimetry, adiabatic heat-capacity calorimetry, vibrating-tube densitometry, comparative ebulliometry, inclined-piston gauge manometry, and differential-scanning calorimetry (d.s.c.). Critical properties were estimated for both materials based on the measurement results. Entropies, enthalpies, and… more
Date: December 1, 1992
Creator: Chirico, R. D.; Knipmeyer, S. E.; Nguyen, A.; Smith, N. K. & Steele, W. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The thermodynamic properties of 4,5,9,10-tetrahydropyrene and 1,2,3,6,7,8-hexahydropyrene. [Tetrahydropyrene and hexahydropyrene]

Description: Measurements leading to the calculation of the ideal-gas thermodynamic properties are reported for 4,5,9,10-tetrahydropyrene and 1,2,3,6,7,8-hexahydropyrene. Experimental methods included combustion calorimetry, adiabatic heat-capacity calorimetry, vibrating-tube densitometry, comparative ebulliometry, inclined-piston gauge manometry, and differential-scanning calorimetry (d.s.c.). Critical properties were estimated for both materials based on the measurement results. Entropies, enthalpies, and… more
Date: December 1, 1992
Creator: Chirico, R. D.; Knipmeyer, S. E.; Nguyen, A.; Smith, N. K. & Steele, W. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The thermodynamic properties to 700 K of naphthalene and 2,7-dimethylnaphthalene

Description: Measurements leading to the calculation of the ideal-gas thermodynamic properties are reported for naphthalene and 2,7-dimethylnaphthalene. Experimental methods included adiabatic heat-capacity calorimetry, vibrating-tube densitometry, comparative ebulliometry, and differential-scanning calorimetry (d.s.c.). The critical temperature and critical density were determined experimentally for each compound and the critical pressures were derived from fitting procedures. Vapor-pressure measurements r… more
Date: August 1993
Creator: Chirico, R. D.; Knipmeyer, S. E.; Nguyen, A. & Steele, W. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fermilab E791

Description: Fermilab E791, a very high statistics charm particle experiment, recently completed its data taking at Fermilab`s Tagged Photon Laboratory. Over 20 billionevents were recorded through a loose transverse energy trigger and written to 8mm tape in the 1991--92 fixed target run at Fermilab. This unprecedented data sample containing charm is being analysis on many-thousand MIP RISC computing farms set up at sites in the collaboration. A glimpse of the data taking and analysis effort is presented. We… more
Date: October 1, 1992
Creator: Amato, S.; Anjos, J. C.; Bediaga, I.; Costa, I.; de Mello Neto, J. R. T.; de Miranda, J. M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Charm physics at Fermilab E791

Description: Experiment 791 at Fermilab`s Tagged Photon Laboratory has just accumulated a high statistics charm sample by recording 20 billion events on 24000 8mm tapes. A 500 GeV/c {pi}{sup {minus}} beam was used with a fixed target and a magnetic spectrometer which now includes 23 silicon microstrip planes for vertex reconstruction. A new data acquisition system read out 9000 events/sec during the part of the Tevatron cycle that delivered beam. Digitization and readout took 50 {mu}S per event. Data was bu… more
Date: May 26, 1992
Creator: Amato, S.; Anjos, J. C.; Bediaga, I.; Costa, I.; de Mello Neto, J. R. T.; de Miranda, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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