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Supercritical Fluid Reactions For Coal Processing Quarterly Progress Report October 1 1995 December 31 1995
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Book Synopsis Supercritical Fluid Reactions for Coal Processing. Quarterly Progress Report, October 1, 1995--December 31, 1995 by :
Download or read book Supercritical Fluid Reactions for Coal Processing. Quarterly Progress Report, October 1, 1995--December 31, 1995 written by and published by . This book was released on 1995 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this work is to design benign solvent/cosolvent systems for reactions which will achieve optimum desulfurization and/or denitrogenation in the pre-treatment of coal or coal liquids. Supercritical fluids present excellent opportunities for the pre- treatment of coal, hence we shall utilize supercritical fluids (SCF) as a reaction medium. The specific objectives of this work are three fold. The first objective is the quantification of the intermolecular interactions affecting reaction transition states in SCF's via kinetic measurements using well characterized Diels-Alder reactions. The second objective is the characterization of the thermodynamics of the reacting systems. From the thermodynamics of the reacting species detailed information about the transition state may be determined. The third objective is the development of molecular level mathematical models using the results from the first two objectives. The models shall be developed using both an equation of state approach and linear solvation energy relationships with solvatochromic parameters. During this quarter, the solubility of the nitrogen bearing dienophile 4-phenyl-1,2,4-triazoline-3,5-dione (PTAD) has been measured as a function of pressure at 40 C, with the exception of points at 2500 psig and 3000 psig. When collection of these last points has been accomplished, the collection of all preliminary data needed to begin kinetic studies of the Diels-Alder reaction between PTAD and anthracene at 40 C in supercritical CO2 will be complete.
Book Synopsis Supercritical Fluid Reactions for Coal Processing. Quarterly Progress Report, January 1, 1995--March 31, 1995 by :
Download or read book Supercritical Fluid Reactions for Coal Processing. Quarterly Progress Report, January 1, 1995--March 31, 1995 written by and published by . This book was released on 1995 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exciting opportunities exist for the application of supercritical fluid (SCF) reactions for the pre-treatment of coal. Utilizing reactants which closely resemble the organic sulfur and nitrogen containing components of coal, we propose to develop a method to tailor chemical reactions in supercritical fluid solvents for the specific application of coal desulfurization and denitrogenation. Diels-Alder reactions involving such compounds have been extensively studied and characterized in liquids. However, there is very little understanding of such reactions in SCF'S. We are developing an approach which will allow optimum design of coal desulfurization and denitrogenation processes.
Book Synopsis Supercritical Fluid Reactions for Coal Processing. Quarterly Progress Report, July 1, 1995--September 30, 1995 by :
Download or read book Supercritical Fluid Reactions for Coal Processing. Quarterly Progress Report, July 1, 1995--September 30, 1995 written by and published by . This book was released on 1995 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this work is to design benign solvent/cosolvent systems for reactions which will achieve optimum desulfurization and/or denitrogenation in the pre-treatment of coal or coal liquids. Supercritical fluids present excellent opportunities for the pretreatment of coal, hence we shall utilize supercritical fluids as a reaction medium. A number of possible Diels-Alder reactive systems involving anthracene (diene) in supercritical solvent were proposed at the outset of research. Scouting experiments designed to select out the optimum reactive system from among the candidate dienophiles and solvents have been completed. The nitrogen bearing compound 4-phenyl-1,2,4-triazoline-3,5-dione (PTAD) has demonstrated superior reactivity and sensitivity to cosolvent additions and has been selected as dienophile. A convenient half-life of reaction between PTAD and anthracene is obtained at temperatures in the neighborhood of 50°C. Carbon dioxide has been selected as the solvent because of its convenient critical properties, and also to optimize the safety of the experiments. In the process of completing these scouting experiments, the experimental apparatus that will be used to obtain kinetic data for calculation of partial molar volumes of the reaction transition state has also been optimized.
Book Synopsis Supercritical Fluid Reactions for Coal Processing. Quarterly Progress Report, October 1, 1996--December 31, 1996 by :
Download or read book Supercritical Fluid Reactions for Coal Processing. Quarterly Progress Report, October 1, 1996--December 31, 1996 written by and published by . This book was released on 1994 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exciting opportunities exist for the application of supercritical fluid (SCF) reactions for the pre-treatment of coal. Utilizing reactants which resemble the organic nitrogen containing components of coal, we propose to develop a method to tailor chemical reactions in supercritical fluid solvents for the specific application of coal denitrogenation. The Diels - Alder reaction of anthracene and 4-phenyl-1,2,4-triazoline-3,5-dione (PTAD) was chosen as the model system and was investigated in supercritical carbon dioxide. During this quarter, measurement of the density dependence of the kinetic rate constant for PTAD and anthracene in supercritical solvents was continued. Having completed studies of rates versus density in pure CO2 at 40C, attention was focused on CO2/Cosolvent mixtures. Experiments were performed using binary mixtures of CO2 and either chloroform or acetone as cosolvent. Cosolvent concentrations were varied between 0.00826 mol/L and 0.0826 mol/L. The cosolvents produced no significant change in the rate constant over that of pure CO2 at these concentrations.
Book Synopsis Supercritical Fluid Reactions for Coal Processing. Quarterly Technical Progress Report, April 1, 1995--June 30, 1995 by :
Download or read book Supercritical Fluid Reactions for Coal Processing. Quarterly Technical Progress Report, April 1, 1995--June 30, 1995 written by and published by . This book was released on 1995 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exciting opportunities exist for the application of supercritical fluid (SCF) reactions for the pre-treatment of coal. Utilizing reactants which closely resemble the organic sulfur and nitrogen containing components of coal, we propose to develop a method to tailor chemical reactions in supercritical fluid solvents for the specific application of coal desulfurization and denitrogenation. Diels-Alder reactions involving such compounds have been extensively studied and characterized in liquids. However, there is very little understanding of such reactions in SCF's. We are developing an approach which will allow optimum design of coal desulfurization and denitrogenation processes.
Book Synopsis Supercritical Fluid Reactions for Coal Processing. Quarterly Progress Report, April 1, 1996--June 30, 1996 by :
Download or read book Supercritical Fluid Reactions for Coal Processing. Quarterly Progress Report, April 1, 1996--June 30, 1996 written by and published by . This book was released on 1996 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exciting opportunities exist for the application of supercritical fluid (SCF) reactions for the pre-treatment of coal. Utilizing reactants which resemble the organic nitrogen containing components of coal, we propose to develop a method to tailor chemical reactions in supercritical fluid solvents for the specific application of coal denitrogenation. The tautomeric equilibrium of a Schiff base was chosen as the model system and was investigated in supercritical ethane and cosolvent modified supercritical ethane.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1996-09 with total page 1244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Allerunterthänigstets Inhæsiv-Schreiben an Ihro Röm. Kayserl. Majestät ... wegen noch anhaltender Religions-Beschwehrden, und dißfalls allergnädigst zu ertheilender und zu beschleunigender Local-Commissionen by :
Download or read book Allerunterthänigstets Inhæsiv-Schreiben an Ihro Röm. Kayserl. Majestät ... wegen noch anhaltender Religions-Beschwehrden, und dißfalls allergnädigst zu ertheilender und zu beschleunigender Local-Commissionen written by and published by . This book was released on 1728 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Supercritical Fluid Reactions for Coal Processing. Quarterly Report, January 1, 1996--March 31, 1996 by :
Download or read book Supercritical Fluid Reactions for Coal Processing. Quarterly Report, January 1, 1996--March 31, 1996 written by and published by . This book was released on 1996 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exciting opportunities exist for the application of supercritical fluid (SCF) reactions for the pre-treatment of coal. Utilizing reactants which resemble the organic nitrogen containing components of coal, we propose to develop a method to tailor chemical reactions in supercritical fluid solvents for the specific application of coal denitrogenation. The tautomeric equilibrium of a Schiff base was chosen as the model system and was investigated in supercritical ethane and cosolvent modified supercritical ethane.
Download or read book Fossil Energy Update written by and published by . This book was released on 1982 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Coal Liquefaction. Final Quarterly Report, October 1, 1995--December 31, 1995 by :
Download or read book Advanced Coal Liquefaction. Final Quarterly Report, October 1, 1995--December 31, 1995 written by and published by . This book was released on 1995 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this quarter, we successfully prepared a granular catalyst required for decomposing compound number 9 in the catalytic membrane reactor. The surface and porous properties of this catalyst are similar to the properties of the ceramic membrane surface. Thus, the catalytic reaction pattern from the granular catalyst is expected to be similar to that from the membranes surface. Further, this catalyst demonstrates a typical property of acid catalysts. The catalytic membrane reactor activity will be resumed in the next quarter using the catalyst prepared in this quarter. In addition, carbon coating of this catalyst did not reduce its acidic property significantly. More study will performed to determine the role of the carbon coating.
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1995 with total page 1686 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Book Synopsis Government Reports Annual Index: Keyword A-L by :
Download or read book Government Reports Annual Index: Keyword A-L written by and published by . This book was released on 1987 with total page 1060 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Coal Liquefaction. Quarterly Technical Progress Report, April 1, 1995-June 30, 1995 by :
Download or read book Advanced Coal Liquefaction. Quarterly Technical Progress Report, April 1, 1995-June 30, 1995 written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Coal Liquefaction. Final Quarterly Report, January 1, 1995-March 31, 1995 by :
Download or read book Advanced Coal Liquefaction. Final Quarterly Report, January 1, 1995-March 31, 1995 written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamental Kinetics of Supercritical Coal Liquefaction: Effect of Catalysts and Hydrogen-donor Solvents. Quarterly Technical Progress Report, October 1994-January 1995 by :
Download or read book Fundamental Kinetics of Supercritical Coal Liquefaction: Effect of Catalysts and Hydrogen-donor Solvents. Quarterly Technical Progress Report, October 1994-January 1995 written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
