Influence of binary swelling solvents: Mechanism of action

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This study addresses the dramatic up-take of a poor swelling solvent in Argonne Premium Coal Samples (APCS), Illinois No. 6, Beulah-Zap and Lewiston-Stockton when such a solvent is spiked with various amounts of the strong swelling solvent, pyridine. The unexpected up-take can be explained in terms of four different processes: (1) disruption of weak hydrogen bonds which isolate the interconnected micropore system; (2) disruption of weak hydrogen bonds which protect individual micropores; (3) competition of pyridine for the active sites involved in the hydrogen bonds or the {open_quotes}poisoning{close_quotes} of active sites; and (4) disruption of stronger hydrogen bonds within the ... continued below

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3 p.

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Ding, R.; Tucker, D. & Kispert, L.D. December 31, 1995.

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Description

This study addresses the dramatic up-take of a poor swelling solvent in Argonne Premium Coal Samples (APCS), Illinois No. 6, Beulah-Zap and Lewiston-Stockton when such a solvent is spiked with various amounts of the strong swelling solvent, pyridine. The unexpected up-take can be explained in terms of four different processes: (1) disruption of weak hydrogen bonds which isolate the interconnected micropore system; (2) disruption of weak hydrogen bonds which protect individual micropores; (3) competition of pyridine for the active sites involved in the hydrogen bonds or the {open_quotes}poisoning{close_quotes} of active sites; and (4) disruption of stronger hydrogen bonds within the macromolecules which causes an opening of the structure. When more than 5% pyridine is used, no additional disruption of the hydrogen-bonded network occurs. The structural changes were monitored by spin probe incorporation which was measured by EPR spectroscopy.

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3 p.

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OSTI as DE96007588

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  • 210. national meeting of the American Chemical Society (ACS), Chicago, IL (United States), 20-25 Aug 1995

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  • Other: DE96007588
  • Report No.: CONF-950801--25
  • Grant Number: FG22-93PC93202
  • Office of Scientific & Technical Information Report Number: 207012
  • Archival Resource Key: ark:/67531/metadc670229

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  • December 31, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Dec. 1, 2015, 2:44 p.m.

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Ding, R.; Tucker, D. & Kispert, L.D. Influence of binary swelling solvents: Mechanism of action, article, December 31, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc670229/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.