Kinetics and mechanism of desulfurization and denitrogenation of coal-derived liquids. Quarterly report, June 20, 1976--September 19, 1976

Technical Report · Fri Oct 01 00:00:00 EDT 1976

DOI:https://doi.org/10.2172/7214620· OSTI ID:7214620

Gates, B. C.; Katzer, J. R.; Olson, J. H.; Kwart, H.; Stiles, A. B.

Two high-pressure flow microreactors are functioning efficiently in studies of dibenzothiophene hydrodesulfurization and quinoline hydrodenitrogenation. Assembly of a third microreactor is scheduled for completion in about three months. Dibenzothiophene hydrodesulfurization at conditions such as 1,000 psig and 300-350/sup 0/C takes place in the absence of mass transfer influence. The rate is surprisingly high, requiring temperatures of 300/sup 0/C or less for determination of differential conversions with the existing apparatus. Batch reaction studies have shown that nitrogen removal from quinoline is characterized by an apparent activation energy of about 20 kcal/mole, whereas the rates of accompanying hydrogenation reactions are almost independent of temperature. Nitrogen removal from acridine and from carbazole is much slower than nitrogen removal from quinoline; the outer rings of the three ring compounds (acridine and carbazole) are hydrogenated relatively rapidly.

• Research Organization: Delaware Univ., Newark (USA)
• Sponsoring Organization: US Energy Research and Development Administration (ERDA)
• DOE Contract Number: EX-76-C-01-2028
• OSTI ID: 7214620
• Report Number(s): FE-2028-6
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
ACRIDINES
AZINES
AZOLES
CARBAZOLES
CHEMICAL REACTIONS
COAL LIQUIDS
CRYOGENIC FLUIDS
DENITRIFICATION
DESULFURIZATION
ELEMENTS
FLUIDS
HETEROCYCLIC COMPOUNDS
HYDROGENATION
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PYRIDINES
QUINOLINES
REMOVAL
SULFUR
THIONAPHTHENES