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Title: 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

Abstract

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 notmore » affect the activity of the remaining sites. Pyridine was much more effective in deactivating the catalyst than coke on a weight basis.« less

Authors:
Publication Date:
Research Org.:
Utah Univ., Salt Lake City (USA). Dept. of Mining and Fuels Engineering
OSTI Identifier:
6627985
Report Number(s):
DOE/ET/14700-3
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Wiser, W. H. 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. United States: N. p., 1980. Web. doi:10.2172/6627985.
Wiser, W. H. 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. United States. https://doi.org/10.2172/6627985
Wiser, W. H. 1980. "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". United States. https://doi.org/10.2172/6627985. https://www.osti.gov/servlets/purl/6627985.
@article{osti_6627985,
title = {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},
author = {Wiser, W. H.},
abstractNote = {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.},
doi = {10.2172/6627985},
url = {https://www.osti.gov/biblio/6627985}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1980},
month = {Tue Jan 01 00:00:00 EST 1980}
}