[The mechanisms of hydrogen incorporation in coal liquefaction]. Sixth progress report, December 31, 1992
In earlier reports we have describe d our efforts to understand the mechanism of deuterium incorporation during the thermolysis of 1,2-diphenylethane and 2,2,5,5-tetramethyl-3,4-diphenylhexane under D{sub 2} gas in a glass vessel. We have reported that in both of these cases, there is substantial deuterium incorporation. A summary of our conclusions follows: Conclusions previously reported for the 1,2-diphenylethane (DPE) system. 1. Benzyl radicals produced in the thermolysis react mainly with DPE to extract a hydrogen atom and produce undeuterated toluene. 2. The 1,2-diphenylethyl radicals produced are mainly responsible for the reaction with D{sub 2} to give D atoms. 3. D atoms then react with aromatic rings to form adduct radicals which are, at least in part, reconverted to D-substituted aromatics in termination steps. 4.2-Phenylethyl radicals react in a less discriminating manner, 1/3 to 1/2 of the events probably involving direct reaction with D{sub 2}. 5. A reasonable match to major product distribution can be accomplished using a model consisting of the set of ten reactions.
- Research Organization:
- Kentucky Univ., Lexington, KY (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-91PC91291
- OSTI ID:
- 10131849
- Report Number(s):
- DOE/PC/91291-T6; ON: DE93009655
- Resource Relation:
- Other Information: PBD: 28 Jan 1993
- Country of Publication:
- United States
- Language:
- English
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