Catalyst dispersion and activity under conditions of temperature-staged liquefaction
The general objectives of this research are (1) to investigate the use of highly dispersed catalysts for the pretreatment of coal by mild hydrogenation, (2) to identify the active forms of the catalysts under reaction conditions and (3) to clarify the mechanisms of catalysis. The ultimate objective is to ascertain if mild catalytic hydrogenation resulting in very limited or no coal solubilization is an advantageous pretreatment for the transformation of coal into transportable fuels. The experimental program will focus upon the development of effective methods of impregnating coal will catalysts, evaluating the conditions under which the catalysts are most active and establishing the relative impact of improved impregnation on conversion and product distributions obtained from coal hydrogenation. Progress this quarter includes the following: Microautoclave tests were repeated with ferrous sulfate in hydrogen using a weight of catalyst more in line with that which eventually will be used with coal (1.25 g). Microautoclave experiments have been completed for molybdenum hexacarbonyl (MHC) and iron pentacarbonyl (IPC) at (275, 350 and 425{degree}C) under hydrogen and nitrogen atmospheres. Coal/solvent swelling and catalyst solubility (SAM and ferrous sulfate) tests have been completed using H{sub 2}O, methanol, THF, pyridine and 10% tetrabutylammonium hydroxide (TBAH). 9 refs., 6 figs., 4 tabs.
- Research Organization:
- Pennsylvania State Univ., University Park, PA (USA)
- Sponsoring Organization:
- DOE/FE
- DOE Contract Number:
- AC22-89PC89877
- OSTI ID:
- 7090082
- Report Number(s):
- DOE/PC/89877-2; ON: DE90013059
- Country of Publication:
- United States
- Language:
- English
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Catalyst dispersion and activity under conditions of temperature-staged liquefaction
Catalyst dispersion and activity under conditions of temperature-staged liquefaction
Related Subjects
36 MATERIALS SCIENCE
AMMONIUM COMPOUNDS
PHASE TRANSFORMATIONS
SOLUBILITY
COAL
SWELLING
COAL LIQUEFACTION
IRON COMPOUNDS
MOLYBDENUM COMPOUNDS
CATALYTIC EFFECTS
HYDROGEN
METHANOL
MOLYBDATES
NITROGEN
PROGRESS REPORT
PYRIDINE
SULFATES
SULFIDES
TETRAHYDROFURAN
ALCOHOLS
AZINES
CARBONACEOUS MATERIALS
CHALCOGENIDES
DOCUMENT TYPES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
FURANS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
LIQUEFACTION
MATERIALS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXYGEN COMPOUNDS
PYRIDINES
REFRACTORY METAL COMPOUNDS
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
360602 - Other Materials- Structure & Phase Studies
360603 - Materials- Properties