Oxidative derivatization and solubilization of coal. Final report. Period: October 1, 1986 - April 30, 1988

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We investigated the solubilization of coal by oxidative means to produce motor fuels. Nitric acid was used in the first of two approaches taken to cleave aliphatic linkages in coal and reduce the size of its macrostructure. Mild conditions, with temperatures up to a maximum of 75 C, and nitric acid concentrations below 20% by weight, characterize this process. The solid product, obtained in high yields, is soluble in polar organic solvents. Lower alcohols, methanol in particular, are of interest as carrier solvents in diesel fuel applications. Coals investigated were New York State peat, Wyodak subbituminous coal, North Dakota lignite, ... continued below

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Schulz, J.G.; Porowski, E.N. & Straub, A.M. May 1, 1988.

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Description

We investigated the solubilization of coal by oxidative means to produce motor fuels. Nitric acid was used in the first of two approaches taken to cleave aliphatic linkages in coal and reduce the size of its macrostructure. Mild conditions, with temperatures up to a maximum of 75 C, and nitric acid concentrations below 20% by weight, characterize this process. The solid product, obtained in high yields, is soluble in polar organic solvents. Lower alcohols, methanol in particular, are of interest as carrier solvents in diesel fuel applications. Coals investigated were New York State peat, Wyodak subbituminous coal, North Dakota lignite, and Illinois No. 6 bituminous coal. The lower tank coals were easily converted and appear well suited to the process, while the bituminous Illinois No. 6 and Pitt Seam coals were unreactive. We concentrated our efforts on Wyodak coal and North Dakota lignite. Reaction conditions with regards to temperature, acid concentration, and time were optimized to obtain high product selectivity at maximum conversion. A continuous process scheme was developed for single pass coal conversions of about 50% to methanol-soluble product.

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Medium: P; Size: vp.

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OSTI as DE00799247

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  • Other Information: PBD: 1 May 1988

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  • Other: M89021349
  • Report No.: DOE/PC/90006--T1
  • Grant Number: AC22-86PC90006
  • DOI: 10.2172/799247 | External Link
  • Office of Scientific & Technical Information Report Number: 799247
  • Archival Resource Key: ark:/67531/metadc738873

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  • May 1, 1988

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  • Oct. 19, 2015, 7:39 p.m.

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  • Nov. 17, 2015, 6:49 p.m.

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Schulz, J.G.; Porowski, E.N. & Straub, A.M. Oxidative derivatization and solubilization of coal. Final report. Period: October 1, 1986 - April 30, 1988, report, May 1, 1988; United States. (digital.library.unt.edu/ark:/67531/metadc738873/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.