Mechanism of hydrogen incorporation in coal liquefaction: Fifteenth report, progress as of March 31, 1995 Page: 4 of 9
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1. Nevertheless, we hope to finish several projects in progress and will try again for
support next year. We believe that the results of our studies are both scientifically
interesting and of potential practical importance. We hope to maintain a reasonable level
of activity through the coming year.
Work in Progress
The Thermal Reactions of Unsaturated Compounds with D2. Mr. Venkat
Rajagopal will finish up this work early this summer so that it can be included in his
dissertation.
Silica-Catalyzed Hydrogenations of Alkenes. As discussed earlier, we have
adapted the activation procedure of Bittner, Bockrath and Solar (320 *C for 16 hours
under argon flow)' to the larger scale of our glass-walled reactors. Our procedure is to
pack Cab-O-Sil in a reactor tube open at both ends, at one end through a capillary
extension. The Cab-O-Sil is then activated using the Bittner argon-flow procedure. When
activation is complete, the Cab-O-Sil is maintained in an argon atmosphere and the
unsaturated organic compound added. The glass-walled vessel is then placed in a steel-
tube reactor and heated under D2 pressure. Other details and preliminary results were
presented in Table I of Report No. 13.
As described earlier, all presently available information indicates that this
hydrogenation on silica proceeds in the same manner as hydrogenation on metal
surfaces. We previously described the reduction of stilbene or diphenylacetylene to 1,2-
diphenylethane, DPE, and that there was very little aromatic D incorporated. To provide2
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Mechanism of hydrogen incorporation in coal liquefaction: Fifteenth report, progress as of March 31, 1995, report, May 1, 1995; Lexington, Kentucky. (https://digital.library.unt.edu/ark:/67531/metadc690759/m1/4/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.