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 with 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. Liquefaction experiments of solvent-treated and untreated Blind Canyon (DECS-6) and Texas lignite (DECS-1) have been performed using ammonium tetrathiomolybdate (ATTM) and bis (dicarbonylcyclopentadienyl) iron (CPI) as catalyst precursors using temperature-staged conditions (275{degrees}C, 30 min; 425{degrees}C, 30 min). Solid state {sup 13}C NMR analysis was carried out for each coal and for selected residues. 12 refs., 14 figs., 9 tabs.
- Research Organization:
- Pennsylvania State Univ., University Park, PA (United States). Energy and Fuels Research Center
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-89PC89877
- OSTI ID:
- 5175085
- Report Number(s):
- DOE/PC/89877-7; ON: DE92001654
- 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
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
AMMONIUM COMPOUNDS
CATALYTIC EFFECTS
COAL LIQUEFACTION
OPTIMIZATION
IRON COMPOUNDS
MOLYBDATES
ASPHALTENES
CALCIUM CARBONATES
CARBONYLS
COAL
HYDROGEN
HYDROGEN SULFIDES
HYDROGENATION
IMAGES
LIGNITE
METHANOL
ORGANIC SOLVENTS
PROGRESS REPORT
PYRIDINE
SUBBITUMINOUS COAL
SWELLING
TEMPERATURE EFFECTS
TETRAHYDROFURAN
ALCOHOLS
ALKALINE EARTH METAL COMPOUNDS
ASPHALTS
AZINES
BITUMENS
BROWN COAL
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
DOCUMENT TYPES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
FURANS
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
LIQUEFACTION
MATERIALS
MOLYBDENUM COMPOUNDS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PYRIDINES
REFRACTORY METAL COMPOUNDS
SOLVENTS
SULFIDES
SULFUR COMPOUNDS
TAR
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
400201 - Chemical & Physicochemical Properties
360602 - Other Materials- Structure & Phase Studies