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- W312702011 abstract "This project is concerned with the study of the nature and behavior of ''active sites'' in the gasification of chars produced from synthesized model compounds, primarily those of the phenol-formaldehyde family of resins. Of the various techniques that have been identified to accomplish the objectives of this project, the development of a reliable measure of the total active surface area (TASA) of the chars is one of the most important. The primary technique that has been pursued in the current work is O/sub 2/ chemisorption (see DOE/PC60800-4 and DOE/PC60800-6). Most of the experimental problems originally encountered have now been overcome, and in the current report we present data on surface areas, active (TASA) and total (TSA) for chars derived from phenol-formaldehyde resins. The general conclusions that can be derived from this work include that: (1) TASA generally decreases with increasing heat treatment temperature; (2) CO/sub 2/ gasification rates of these chars at 950/sup 0/C, atmospheric pressure, relative to TASA, are reasonably constant, while those relative to total surface area (TSA), determined by N/sub 2/ BET, show considerable variation. Therefore, TASA seems to be a better parameter for characterizing the reactivities of the current model compound chars. 23 refs., 3 figs.,more » 2 tabs.« less" @default.
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- W312702011 date "1985-01-01" @default.
- W312702011 modified "2023-10-15" @default.
- W312702011 title "Active sites in char gasification. Quarterly technical progress report, 1 July 1985-30 September 1985" @default.
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