Enhanced catalysis by solvent improvement. Quarterly technical progress report, 1 July-30 September 1983

Technical Report · Tue Jan 31 23:00:00 EST 1984

OSTI ID:7150516

Garg, D; Miller, R N; Givens, E N; Tarrer, A R; Guin, J A; Curtis, C W

This report describes the results from liquefaction solvent modification, coal liquefaction with modified solvent, catalyst selection, coal pretreatment, and pretreatment followed by liquefaction experiments. Treatment of base liquefaction solvent with various clays/solid adsorbents such as bentonite, kaolin, and porocel resulted in almost no removal of both nitrogen and oxygen compounds. Catalytic liquefaction of Illinois Number 6 coal in the presence of base liquefaction solvent treated with acidic alumina to remove oxygen compounds showed a marginal increase in the oil production. However, oil production increased significantly with additional removal of phenols from the base liquefaction solvent as noted with the use of solvent treated with basic alumina. The catalytic activity of 1 wt % iron impregnated into coal was noted to be similar to that of 500 ppM molybdenum when modified solvent generated by treating base liquefaction solvent with anhydrous HCl followed by silica gel was used as liquefaction solvent. Air oxidation of Illinois Number 6 Burning Star coal under the conditions corresponding to about <3% oxygen uptake did not seriously affect the liquefaction product distribution, provided modified solvent was used in the liquefaction. However, more severe oxidation corresponding to oxygen uptake in excess of 3% was clearly detrimental to coal conversion and oil production regardless of whether modified solvent was used. Mild air oxidation of Illinois Number 6 produced only a minor fraction of metal adsorption sites relative to the large amount of oxygen incorporated. Hence, ion-exchange treatment of oxidized coal with iron sulfate did not produce a significant increase in the oil yield over that found for iron sulfate treatment of original coal. 8 refs., 1 fig., 11 tabs.

• Research Organization: Air Products and Chemicals, Inc., Allentown, PA (USA); Auburn Univ., AL (USA)
• DOE Contract Number: AC22-82PC50003
• OSTI ID: 7150516
• Report Number(s): DOE/PC/50003-23; ON: DE87001919
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
&amp; Peat-- Hydrogenation &amp; Liquefaction
AIR
AROMATICS
CARBONACEOUS MATERIALS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
CLAYS
COAL
COAL LIQUEFACTION
COBALT
COPPER
DATA
ELEMENTS
ENERGY SOURCES
EXPERIMENTAL DATA
FLUIDS
FOSSIL FUELS
FUELS
GASES
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
HYDROXY COMPOUNDS
INFORMATION
INORGANIC ACIDS
ION EXCHANGE
IRON
LIQUEFACTION
MATERIALS
MEDIUM PRESSURE
MEDIUM TEMPERATURE
METALS
MODIFICATIONS
MOLYBDENUM
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SOLVENTS
OXIDATION
OXYGEN COMPOUNDS
PEROXIDES
PHENOL
PHENOLS
REMOVAL
RESEARCH PROGRAMS
SOLVENTS
SORPTIVE PROPERTIES
SULFURIC ACID
SURFACE PROPERTIES
TEMPERATURE EFFECTS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
YIELDS
ZINC