Chemistry and catalysis of coal liquefaction, catalytic and thermal upgrading of coal liquid and hydrogenation of CO to produce fuels. Quarterly progress report, April-June 1980

Technical Report · Tue Jan 01 00:00:00 EST 1980

DOI:https://doi.org/10.2172/6627985· OSTI ID:6627985

Wiser, W. H.

Systematic hydrodeoxygenation (HDO) studies of polycyclic ketones, e.g., 1-tetralone (1) and 2-tetralone (2) were carried out. The change in product composition as a function of sulfided catalyst type, reaction temperature, and contact time were investigated and feasible mechanistic schemes were developed. The hydrodenitrogenation (HDN) of acridine, a compound representative of linear N-containing polycyclics with a middle pyridine ring, was investigated. Results obtained show that at least two aromatic rings in the acridine system must be saturated before removal of the nitrogen atom from the middle ring could be effected. The catalytic cracking of 9,10-dihydronaphthalene was systematically investigated and a feasible mechanistic scheme for the reactions involved was developed. The study demonstrates that conventional zeolite-containing catalysts are ineffective for cracking of a middle hydroaromatic ring, flanked by two aromatic rings. Cracking of a middle hydroaromatic ring with such catalysts is effected only if the ring is flanked by at least another hydroaromatic ring, as in 1,2,3,4,9,10,11,12-octahydrophenanthrene. Studies on the effect of deactivation of commercial CoMo/Al/sub 2/O/sub 3/ catalysts by pyridine poisoning and by coke showed that the remaining active sites were essentially identical in character to those on the fresh catalyst. Thus, deactivation causes loss of some sites, but does not affect the activity of the remaining sites. Pyridine was much more effective in deactivating the catalyst than coke on a weight basis.

• Research Organization: Utah Univ., Salt Lake City (USA). Dept. of Mining and Fuels Engineering
• OSTI ID: 6627985
• Report Number(s): DOE/ET/14700-3
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
BITUMINOUS COAL
PYROLYSIS
CATALYSTS
DEACTIVATION
COAL
NUCLEAR MAGNETIC RESONANCE
COAL LIQUEFACTION
CHEMISTRY
COAL LIQUIDS
CATALYTIC CRACKING
HYDROGENATION
RESIDUES
CARBON 13
EXPERIMENTAL DATA
NITROGEN
OXYGEN
REFINING
REMOVAL
STRUCTURAL MODELS
SULFUR
BLACK COAL
CARBON ISOTOPES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CRACKING
DATA
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
EVEN-ODD NUCLEI
FLUIDS
FOSSIL FUELS
FUELS
INFORMATION
ISOTOPES
LIGHT NUCLEI
LIQUEFACTION
LIQUIDS
MAGNETIC RESONANCE
MATERIALS
NONMETALS
NUCLEI
NUMERICAL DATA
PROCESSING
RESONANCE
STABLE ISOTOPES
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction