Use of acetylation and 14C-counting to quantitate hydroxyl groups in preasphaltenes and asphaltenes from coal hydrogenation
✍ Scribed by Richard J. Baltisberger; Kundanbhai M. Patel; Neil F. Woolsey; Virgil I. Stenberg
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 628 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0016-2361
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✦ Synopsis
A method is described for the quantitative acetylation of coaCderived fuels primarily composed of preasphaltenes (tolueneinsoluble materials) and asphaltenes (toluenesoluble, pentaneinsoluble materials). The objectives of this work are to develop an acetylation procedure which renders the coalderived material soluble in solvents suitable for nuclear magnetic resonance and infrared analysis and at the same time be quantitative in specific reactions so that hydroxyl and amine functionalities could be measured through acetylation with radiolabelled acetic anhydride. Acetylation at room temperature is thought to be able to accomplish the above objectives.