Refereed Publications

Clifford D.J., Hatcher P.G., Botto R.E., Muntean J.V. and Anderson K.B. (1999) The nature and fate of natural resins in the geosphere-IX. Structure and maturation similarities of soluble and insoluble polylabdanoids isolated from Tertiary Class I resinites. Organic Geochemistry Accepted

Gregory D.M., Gerald R.E., Clifford D.J. and Botto R.E. (1998) 129Xe MRM characterization of pore structures in silica aerogels. Spatially Resolved Magnetic Resonance. Methods, Materials, Medicine, Biology, Rheology, Geology, Ecology, Hardware (Edited by Blumler P., Blumich B., Botto R. E. and Fukushima E) pp.163-177, Wiley-VCH, Weinheim-New York.

Clifford D.J., Clayton J.L. and Sinninghe Damsté J.S. (1998) 3,4,5-2,3,6 substituted diaryl carotenoid derivatives (Chlorobiaceae) and their utility as indicators of photic zone anoxia in sedimentary environments. Organic Geochemistry 29, 1253-1267.

Clifford D.J., Hatcher P.G., Botto R.E., Muntean J.V., Michels B. and Anderson K.B. (1998) The nature and fate of natural resins in the geosphere-VIII. NMR and Py-GC-MS characterization of soluble labdanoid polymers isolated from Holocene Class I resins. Organic Geochemistry 27, 449-464.

Hatcher P.G. and Clifford D.J. (1998) The organic geochemistry of coal: from plant materials to coal. Organic Geochemistry 27, 251.

Cody G.D., Ade H., Wirick S., Mitchell G.D. and Davis A. (1998), Determination of Chemical Structural Changes in Vitrinite Accompanying Luminescence Alteration Using C-NEXAFS. Organic Geochemistry 28, 441-455.

McKinney D.M., Bortiatynski J.M., Carson D.M., Clifford D.J., de Leeuw J.W. and Hatcher P.G. (1996) Tetramethylammonium hydroxide (TMAH) thermochemolysis of the aliphatic biopolymer cutan: insights into the chemical structure. Organic Geochemistry 24, 641-650.

Badger M.W. and Harrison G. (1996) Coal liquefaction with solvent augmentation by heavy oil residues in the presence of disposable iron catalyst. Fuel 75, 706-712.

Clifford D.J. and Hatcher P.G. (1995) Structural transformations of polylabdanoid resinites during maturation. Organic Geochemistry 23, 407-418.

Clifford D.J. and Hatcher P.G. (1995) Maturation of polylabdanoid (Class Ib) resinites. In Amber, Resinite and Fossil Resins (Edited by Ken B. Anderson and J.C. Crelling) pp. 92-104, ACS Symposium Series 617, ACS publications.

Clifford D.J., Carson D.M., McKinney D.E., Bortiatynski J.M. and Hatcher P.G. (1995) A new rapid technique for the characterization of lignin in vascular plants: thermochemolysis with tetramethylammonium hdyroxide (TMAH). Organic Geochemistry 23, 169-175.

McKinney D.E., Bortiatynski J.M., Carson D.M., Clifford D.J., and Hatcher P.G. (1995) Tetramethylammonium hydroxide (TMAH) thermochemolysis of aliphatic biopolymers: Insights to their chemical structure. In Organic Geochemistry: Developments and Applications to Energy, Climate, Environment, and Human History (eds. J.O. Grimalt and C. Dorronsoro), A.I.G.O.A. Donostia-San Sebastian pp. 1023-1025.

McKinney D.E., Carson D.M., Clifford D.J., Minard R.D. and Hatcher P.G. (1995) Off-line thermochemolysis versus flash pyrolysis for the in situ methylation of lignin: is pyrolysis necessary? Journal of Analytical and Applied Pyrolysis 34, 41-46.

McKinney D.E., Clifford D.J., Hou L., Bogdan M.R. and Hatcher P.G. (1995) High performance liquid chromatography (HPLC) of coal liquefaction process streams using normal-phase separation with diode array detection. Energy & Fuels 9, 90-96.

Hurt R.H., Davis K.A. Yang N.Y.C., Headley T.J. and Mitchell G.D. (1995) Residual Carbon from Pulverized-Coal-Fired Boilers 2: Morphology and Physicochemical Properties. Fuel 4, 1297-1306.

Hatcher P.G., Faulon J.-L., Clifford D.J. and Mathews J.P. (1994) A three-dimensional structural model for humic acids from oxidized soil. In: Humic Substances in the Global Environment and Implications on Human Health (Senesi, N. and Miano, T.M. eds.). Elsevier, Amsterdam, 133-138.

Clifford D.J., McKinney D.E., Hou L. and Hatcher P.G. (1994) High performance liquid chromatography (HPLC) of coal liquefaction process streams using normal-phase separation with UV diode array detection. October 1993, DE-AC22-89PC89883, The Pennsylvania State University.

Hatcher P.G. and Clifford D.J. (1994) Flash pyrolysis and in situ methylation of humic acids from soil. Organic Geochemistry 21, 1081-1092.

Artok L., Davis A., Mitchell G.D. and Schobert H.H. (1993) Swelling Pretreatment of Coals for Improved Catalytic Temperature-Staged Liquefaction. Energy & Fuels 7, 67-77.

Mitchell G.D. and Davis A. (1992) The Fluorescence Characterization of Asphalts, Fuel Science Technology International 10, 909-934.

Artok L., Davis A., Mitchell G.D. and Schobert, H.H. (1992) Swelling Pretreatment of Coals for Improved Liquefaction. Fuel 71, 981-991.

Davis A., Mitchell G.D., Derbyshire R.F., Rathbone R.F. and Lin R. (1991) Optical Properties of Coals and Liquefaction Residues as Indicators of Reactivity. Fuel 70, 352-360.

Davis A., Hoover D.S., Wakeley L.D., and Mitchell G.D. (1983) The Microscopy of Mesophase Formation and of Anisotropic Cokes Produced From Solvent-Refined Coal. Journal of Microscopy 132, 315-331.

Friel J.J., Mehta S., Mitchell G.D., and Karpinski, J.M. (1980) Direct Observation of the Mesophase in Coal. Fuel 59, 610-616.

Wakeley L.D., Davis A., Mitchell G.D., and Walker, Jr., P.L. (1979) The Nature of Solids Accumulated During Solvent Refining of Coal. Fuel 58, 379-385.

Mitchell G.D., Davis A., Spackman W. (1977) A Petrographic Classification of Solid Residues Derived From the Hydrogenation of Bituminous Coals, "Liquid Fuels From Coals", (R.T. Ellington, ed.) 255-270, Academic Press, New York.

Spackman W., Davis A., and Mitchell G.D. (1976) The Fluorescence of Liptinite Macerals. Brigham Young University Geology Studies 22, 59-75

Conference and Non-Refereed Publications

Fickinger A.E., Badger M.W., Mitchell G.D. and Schobert H.H. (1999) Co-coking: An Alternative for Coal-derived Jet Fuel Production. ACS Division Of Fuel Chemistry Preprints 44, 106.

Badger M.W., Fickinger A.E., Martin S.C., Mitchell G.D. and Schobert H.H. (1998) Novel Co-Processing Applications for Production of Coal-Derived Jet Fuels. AIE 8th Australian Coal Science Conference 8, 245.

Badger M.W. and Schobert H.H. (1998) Viscosity Reduction in Extra Heavy Crude Oils. ACS Division of Fuel Chemistry Preprints 43, 461.

Glick D.C., Mitchell G.D. and Davis A. (1997) Coal Sample Preservation in Foil Multilaminate Bags, Program and Abstracts. Fourteenth Annual Meeting of The Society of Organic Petrology, Lexington, Kentucky, 14, 45-47.

Davis A. and Mitchell G.D. (1997) Coal Photoluminescence: Modification of Surface Properties and Geochemical and Technological Implications. American Chemical Society Preprint 42, 318-322.

Mitchell G.D., Davis, A., Polat, H. and Chander, S. (1996) The Influence of Photo-Oxidation on the Wettability of Vitrinite From Bituminous Coals. Proceedings 13th Annual Pittsburgh Coal Conference 2, 885-890, September 3-7, Pittsburgh, Pennsylvania.

Badger, M. W. and Harrison, G. (1995) Hydrogen Transfer in Coal/Oil Coprocessing using Alternative Oil Feedstocks. Preprints 8th ICCS, 2, 1503.

Badger M.W., G. Harrison and A.B. Ross (1994) Hydrogen Transfer in Coal/Oil Coprocessing using Alternative Oil Feedstocks. ACS Division of Fuel Chemistry Preprints 39, 438

Clifford D.J., Faulon J.-L., Mathews J.P. and Hatcher P.G. (1994) Chemical structure of hand-picked coal macerals derived from specific plant precursors. Preprint Paper - American Chemical Society, Division of Fuel Chemistry, San Diego 1, 198-204

McKinney D.E., Clifford D.J., Hou L., Bogdan M.R. and Hatcher P.G. (1994) High performance liquid chromatography of coal liquefaction process streams using normal-phase separation with diode array detection., Preprint Paper - American Chemical Society, Division of Fuel Chemistry 39, 835-839.

Zhang E., Mitchell G.D., Hatcher, P.G. and Davis, A. (1994) The Effect of Organic Sulfur Incorporation on Reflectance and Fluorescence Properties of Vitrinite in Western Pennsylvania Coals. American Chemical Society Abstracts, Washington, D.C., August.

Mitchell G.D. and Davis, A. (1992) Characterization of Asphalts and Asphalt/Aggregate Mixtures Using Fluorescence Microphotometry. American Chemical Society Preprint 37, 1360-1366.

Mitchell G.D., Davis, A. and Rathbone, R.F. (1991) The Use of Vitrinite Fluorescence as a Measure of Changes in Coal Thermoplasticity and Weathering. Proceedings 50th Ironmaking Conference, 199-206, April 14-17, Washington DC.

Davis A., Mitchell G.D., Derbyshire, F.J., Schobert, H.H. and Lin, R. (1991) Microscopic Evidence of Competing Hydrogenation and Condensation Reactions During Liquefaction. American Chemical Society Preprint 36, 445-453.

Artok L., Schobert H.H., Mitchell G.D. and Davis A. (1991) Swelling Pretreatment of Coals For Improved Liquefaction. American Chemical Society Preprint 36, 36-43.

Glick D.C., Mitchell G.D. and Davis A. (1991) Monitoring the Oxidation of Coals in Storage. American Chemical Society Preprint, 36, 861-868.

Mitchell G.D. and Davis A. (1990) The Fluorescence Characterization of Asphalts. American Chemical Society Preprint, 35, 469-475, July, Washington, DC.

Mitchell G.D., Davis A. and Derbyshire F.J., (1989) Microscopic Observations of Dispersed Liquefaction Catalysts. International Coal Science Conference, 751-754, Tokyo, Japan.

Davis A., Lin R., Mitchell G.D., and Derbyshire F.J. (1987) Monitoring the Processes of Coal Hydrogenation Through the Microscopy of Residues. Extended Abstracts, 18th Biennial Conference on Carbon, 249-250, July 19-24, Worcester, Massachusetts.

Mitchell G.D., Davis A., Gunnett J.W., and Loy M.D. (1987) Improving the Marketability of Pennsylvania Coals. Proceedings 5th Pittsburgh Coal Conference, 347-358, September 28 - October 2, Pittsburgh, Pennsylvania.

Mitchell G.D. and Strauss A.D. (1987) Pilot Scale Co-carbonization of Coals with a Solvent Refined Coal. Proceedings 46th Ironmaking Conference, 347-356, March 29 - April 1, Pittsburgh, Pennsylvania.

Mitchell G.D. and Benedict L.G. (1983) The Use of Coke Petrography as a Measure of the Behavior and Quality of Coke. Proceedings 42nd Ironmaking Conference, April 17-20, Atlanta, Georgia.

Mehta S., Friel, J.J., Mitchell G.D., and Karpinski, J.M. (1981) Development of the Mesophase and Coke-Carbon Forms During Coal Carbonization. Extended Abstracts, 15th Biennial Conference on Carbon, June 22-24, Philadelphia, Pennsylvania.

Friel J.J. and Mitchell G.D. (1981) Organic Oxygen and Sulfur Analysis of Various Coal Macerals. Microbeam Analysis Society, July 13-17, Vail, Colorado.

Friel J.J., Mehta S., Mitchell G.D., and Karpinski J.M. (1980) Role of the Mesophase During the Coal to Coke Transformation. Proceedings 39th Ironmaking Conference, March 23-26, Washington, D.C.