Effects of low-temperature catalytic pretreatments on coal structure and reactivity in liquefaction. Technical progress report, January 1992--March 1992

Technical Report · Fri May 01 04:00:00 EDT 1992

DOI:https://doi.org/10.2172/10168913· OSTI ID:10168913

Song, C; Saini, A K; Hatcher, P G; Schobert, H H

Low-temperature catalytic pretreatment is a promising approach to the development of an improved liquefaction process. This work is a fundamental study on effects of pretreatments on coal structure and reactivity in liquefaction. The main objectives of this project are to study the coal structural changes induced by low-temperature catalytic and thermal pretreatments by using spectroscopic techniques; and to clarify the pretreatment-induced changes in reactivity or convertibility of coals in the subsequent liquefaction. This report describes the progress of our work during the second quarterly period. Significant progress has been made in the spectroscopic characterization of fresh and THF-extracted samples of Wyodak subbituminous coals, catalytic and thermal low-temperature pretreatments in the absence and presence of hydrogen-donor and non-donor solvents, and the spectroscopic characterization of thermally and catalytically pretreated coals using cross-polarization magic angle spinning (CPMAS) solid-state {sup 13}C NMR, pyrolysis-GC-MS and FT-IR techniques.

• Research Organization: Pennsylvania State Univ., University Park, PA (United States). Dept. of Materials Science and Engineering
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC22-91PC91042
• OSTI ID: 10168913
• Report Number(s): DOE/PC/91042--T1; ON: DE92018479; IN: TPR-2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102
665100
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CARBON 13
CHEMICAL ANALYSIS
CHEMICAL AND SPECTRAL PROCEDURES
COAL LIQUEFACTION
FOURIER TRANSFORM SPECTROMETERS
GAS CHROMATOGRAPHY
HEAT TREATMENTS
HYDROGENATION AND LIQUEFACTION
INFRARED SPECTROMETERS
MASS SPECTROSCOPY
MICROSTRUCTURE
NUCLEAR MAGNETIC RESONANCE
NUCLEAR TECHNIQUES IN CONDENSED MATTER PHYSICS
PROGRESS REPORT
PYROLYSIS
SOLVENTS
SUBBITUMINOUS COAL
TEMPERATURE RANGE 0400-1000 K