Homogeneous catalytic hydrocracking processes for conversion of coal to liquid fuels: basic and exploratory research. Quarterly report No. 5, November 1, 1976--January 31, 1977. [16 refs]

Technical Report · Tue Mar 08 04:00:00 EST 1977

DOI:https://doi.org/10.2172/7209421· OSTI ID:7209421

A study of the effect of higher reaction temperature (300/sup 0/C) on treatment of coal with the AlCl/sub 3//HCl catalyst system showed that with a 2/1 catalyst/coal weight ratio, the coal is almost entirely gasified, with 40% of the C converted to CH/sub 4/, and 50% to C/sub 2/H/sub 6/. The study of the importance of adding of HCl to the reaction system at this temperature showed that without added HCl, the gas yield was significantly reduced, and the H/C atomic ratio of the coal residue also decreased considerably. A study was made on the effects of several variables on coal conversion in i-PrOH and KOiPr at 335/sup 0/C for 90 min. Decreasing the reaction time to 30 min virtually eliminated the conversion. Interactions of coal with Tetralin and naphthalene were studied. When treated with Tetralin at 430/sup 0/C, Illinois No. 6 coal yields a product with pyridine solubility increasing from 80 to 97% when contact time is increased from 28 to 137 sec. Pyridine solubility of coal treated with naphthalene was determined as a function of contact time at 400 and 430/sup 0/C. For the former, the initial conversion is 20%, rising to approximately 40% in 2 min. The extension of group additivity procedures to the estimation of thermochemical data for coal-related nitrogen-containing heterocycles has begun. The very low-pressure pyrolysis system has been modified to enable measurement of the stabilities of benzyl radical analogs that are likely intermediates in thermolytic reactions of coal. The system is now being calibrated. A summary is presented of new and older work on fractionation of coal extracts and SRCs. Number-average molecular weights of these fractions have been related to retention volumes of the same fractions in gel permeation chromatography in tetrahydrofuran.

• Research Organization: Stanford Research Inst., Menlo Park, Calif. (USA)
• OSTI ID: 7209421
• Report Number(s): FE-2202-5
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
ALKANES
ALUMINIUM CHLORIDES
ALUMINIUM COMPOUNDS
CARBONACEOUS MATERIALS
CATALYSTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
COAL
COAL EXTRACTS
COAL LIQUEFACTION
CRYOGENIC FLUIDS
ENERGY SOURCES
ETHANE
FLUIDS
FOSSIL FUELS
FRACTIONATION
FUELS
HALIDES
HALOGEN COMPOUNDS
HYDROCARBONS
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
HYDROGENATION
INORGANIC ACIDS
KINETICS
LIQUEFACTION
METHANE
MOLECULAR WEIGHT
ORGANIC COMPOUNDS
REACTION KINETICS
SEPARATION PROCESSES
SOLVENT-REFINED COAL
STRUCTURAL CHEMICAL ANALYSIS
TEMPERATURE DEPENDENCE